WO2019233416A1 - Electrostatic loudspeaker, moving-coil loudspeaker, and apparatus for processing audio signal - Google Patents

Electrostatic loudspeaker, moving-coil loudspeaker, and apparatus for processing audio signal Download PDF

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Publication number
WO2019233416A1
WO2019233416A1 PCT/CN2019/089991 CN2019089991W WO2019233416A1 WO 2019233416 A1 WO2019233416 A1 WO 2019233416A1 CN 2019089991 W CN2019089991 W CN 2019089991W WO 2019233416 A1 WO2019233416 A1 WO 2019233416A1
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WO
WIPO (PCT)
Prior art keywords
differential operation
order differential
signal
module
audio signal
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PCT/CN2019/089991
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French (fr)
Chinese (zh)
Inventor
董耀斌
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Dong Yaobin
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Priority to JP2021517893A priority Critical patent/JP2021527374A/en
Publication of WO2019233416A1 publication Critical patent/WO2019233416A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/02—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present invention belongs to the field of audiovisual technology, and particularly relates to an electrostatic speaker, a dynamic coil speaker, and a device for processing audio signals.
  • FIGs 1 and 2 are the structural and schematic diagrams of a dynamic coil speaker, respectively.
  • the diaphragm (102), centering support (104) and voice coil (103) are connected together, and the voice coil (103) is in a magnetic field ( In FIG. 2, it is indicated by a converged, dotted line with an arrow.)
  • the voice coil (103) an audio current passes through the magnetic field force to vibrate, thereby driving the diaphragm (102) to vibrate to generate sound.
  • the magnetic induction strength of the magnetic field where the voice coil (103) is located is B
  • the mass of the voice coil (103) is m
  • the resistance is r
  • the effective length of the voice coil wire is 1
  • the inductance is L.
  • Figure 2 is a schematic diagram of a dynamic coil speaker.
  • the state current i 1 (t) contains the information of the input audio signal u (t), so only the steady state current i 1 (t) will affect the distortion of the speaker's output sound information.
  • the steady state current in voice coil [103] is:
  • the steady-state current in the voice coil is a sinusoidal signal with the same frequency as the input audio signal, and the phase is shifted by an angle relative to the input audio signal
  • the magnitude of the steady-state current is equal to the magnitude of the input audio signal divided by the modulus of the voice coil impedance.
  • the actual speed of the voice coil (103) is:
  • the two items 1 and 2 in the formula are the sound information restored by the moving coil speaker, and there is a phase difference between them.
  • n 1, 2, 3, ..., this phase difference will make 1 and 2 interfere with each other and affect the sound quality; in addition, their amplitudes are both functions of n ⁇ , indicating that there is amplitude-frequency distortion (linear distortion) in dynamic coil speakers ), 3, 4, 5, 6, and 7 are the noise generated by the dynamic coil speaker during the processing of the input audio signal.
  • the amplitude and frequency distortion and noise of the dynamic coil speaker are very serious. These distortions and noise are determined by the working principle of the dynamic coil speaker.
  • the magnetic field in which the voice coil is located is uneven and asymmetric. The non-linearity of the driving force caused by the displacement of the centering support will also cause distortion. These distortions are caused by the more complex (relative to electrostatic speakers) mechanical structure of the dynamic coil speaker.
  • an electrostatic speaker can be used.
  • the principle is shown in Figure 3.
  • the input audio signal is boosted by the audio transformer (301) 200 to 300 times and added to two fixed poles.
  • the high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304).
  • the two fixed electrode plates (303) are equivalent to a capacitor, and its capacitance is denoted as C.
  • An audio transformer (301) is provided.
  • Output audio signal At t 0, the current is applied to the fixed plate (303), and the current flowing into the fixed plate (303) is:
  • the speed of the diaphragm (304) is:
  • the term 8 in the formula is the sound information restored by the electrostatic speaker, and its amplitude is also a function of n ⁇ , indicating that the electrostatic speaker also has amplitude-frequency distortion.
  • electrostatic speakers are: the theoretical distortion is small; the diaphragm is very light, so it has excellent flexibility, excellent resolution, and can capture very subtle changes in the music signal, making people feel very realistic, background noise is small, and there is a sense of presence, Can fully express the charm of music.
  • amplitude-frequency distortion amplitude-frequency distortion and amplitude distortion have the same meaning, and are often mixed.
  • the technical solution of the present invention can reduce the amplitude-frequency distortion of an electrostatic speaker (driven by an electrostatic force) and a dynamic coil speaker (driven by a magnetic field force).
  • the input audio signal may be subjected to a differential operation before being transmitted to the two fixed plates of the electrostatic speaker.
  • the two fixed plates (303) are equivalent to capacitors, and their capacitance is denoted as C.
  • the audio signal output by the audio transformer (301) is set. Derivative of u (t), we get:
  • the speed of the diaphragm (304) is:
  • the speed of the diaphragm (304) is:
  • the third-order differential operation on the input audio signal u (t) can be added to the fixed plate of the electrostatic speaker to reduce the amplitude-frequency distortion of the speaker, as explained below:
  • the speed of the diaphragm (304) is:
  • the input audio signal u (t) is first-, second-, or third-order differential before being transmitted to the two fixed plates (303).
  • the calculation can reduce the amplitude-frequency distortion of the electrostatic speaker, and the second-order differential operation is effective.
  • the magnetic induction intensity of the magnetic field where the voice coil (103) is located is B
  • the mass of the voice coil (103) is m
  • the resistance is r
  • the effective length of the voice coil wire is l
  • the inductance is L
  • the steady-state current (containing the information of the input audio signal) in the voice coil (103) is:
  • the electromotive force Blv generated by the motion of the voice coil is not considered in this formula.
  • the actual speed of the voice coil (103) is:
  • the input audio signal may be subjected to a second-order differential operation and then added to the voice coil.
  • the magnetic induction intensity of the magnetic field where the voice coil (103) is located is B
  • the mass of the voice coil (103) is m
  • the resistance is r
  • the effective length of the voice coil wire is l
  • the inductance is L
  • n 1, 2, 3, ..., let's set the input audio signal
  • the electromotive force Blv generated by the motion of the voice coil is not considered in this formula.
  • the actual speed of the voice coil (103) is:
  • the electromotive force Blv generated by the motion of the voice coil is not considered in this formula.
  • the actual speed of the voice coil (103) is:
  • the electromotive force Blv caused by the motion of the voice coil is not considered in this formula.
  • the actual speed of the voice coil (103) is:
  • the electromotive force Blv generated by the motion of the voice coil is not considered in this formula.
  • the actual speed of the voice coil (103) is:
  • the first-, second-, or third-order differential operation of the input audio signal and then adding it to the fixed plate of the speaker can reduce the amplitude-frequency distortion of the speaker.
  • Performing a second-order differential operation can completely eliminate the amplitude-frequency distortion of the speaker;
  • the input audio signal is subjected to a first-order, second-order, third-order, fourth-order, or fifth-order differential operation and then added to the speaker.
  • the amplitude-frequency distortion of the speaker can be reduced, but it cannot be completely eliminated, and the third-order differential operation is effective.
  • both the integral operation and the differential operation will cause the amplitude-frequency distortion of the signal, and the effect is just the opposite (i.e. Differential operation makes the input signal amplitude become the original n ⁇ times, and integral operation makes the input signal amplitude become the original ), And both are related to the frequency of the input signal, such as the process of increasing the voltage (integral operation) between the two fixed electrode plates (303) of the electrostatic speaker, the acceleration process of the diaphragm (304) (integral operation), and the moving coil.
  • the current increase of the voice coil (103) (integral operation), the acceleration of the movement of the voice coil (103) (integral operation), etc. it can be seen that there are integral operations in both electrostatic speakers and dynamic coil speakers, and This integral operation is essential and necessary for its working principle.
  • differentiation is the inverse operation of integration
  • the input audio signal is first subjected to an appropriate differentiation operation (that is, pre-compensation for the amplitude-frequency distortion generated by the integration operation, and the "inverse distortion” is used to compensate the distortion, because once the distortion is finally in the diaphragm (It ca n’t be remedied by the vibrations), and it can be used to correct the amplitude-frequency distortion generated by the integral operation.
  • the essence of the technical solution of the present invention is that since the speaker performs integral operation on the audio signal, it will produce amplitude-frequency distortion (this integral operation is necessary), so it is necessary to perform appropriate differential operation on the audio signal (that is, to perform " Pre-compensation ”) to correct amplitude-frequency distortion caused by integration operations.
  • this kind of differential operation can be realized by hardware or software.
  • the differential calculation of the input audio signal and other processing processes (such as amplification, filtering, etc.) of the signal are independent of each other, whether it is an electrostatic speaker (driven by electrostatic force) or a dynamic coil speaker (driven by magnetic field force)
  • the sound system formed by the driver specifically determines where the "differential operation" of the input signal is placed in the sound system, and does not affect its final effect of reducing speaker distortion.
  • the “differential operation” can be performed on the signal transmission path from the audio transformer to two fixed plates, or it can be integrated inside the audio transformer to implement.
  • Audio signal amplifiers in sound systems are generally multi-stage amplified.
  • one or more stages in the differential operation of the input audio signal can be integrated into one or more stages of the audio signal amplifier. It does not affect the final effect of the "differential operation" to reduce the amplitude-frequency distortion of the signal.
  • electrostatic speakers are not only simple in structure, the key is that there is no magnetic field, which is driven by electrostatic force, and there is no problem of back electromotive force, so the amplitude frequency distortion is smaller. It can be seen that electrostatic speakers have inherent advantages over moving coil speakers (driven by magnetic field forces) in terms of working principles, so in high-fidelity audio systems, it is better to use electrostatic speakers.
  • the diaphragm can be made into different shapes according to requirements, such as cone cone speakers, dome speakers, horn speakers, flat speakers, etc.
  • the flat speakers here are different from the common ones.
  • the flat electrostatic speaker only makes the diaphragm into a flat shape, and then fixes it with the voice coil. When the voice coil vibrates, it drives the flat diaphragm to vibrate to generate sound, which still belongs to a dynamic coil speaker.
  • there is a band speaker It puts a band-shaped metal foil (usually aluminum foil) in a magnetic field. When audio current passes through it, it vibrates under the force of the magnetic field to generate sound. In fact, this speaker and There is no essential difference between dynamic coil speakers.
  • the band-shaped metal aluminum foil here is equivalent to a "voice coil plus diaphragm", which is equivalent to stretching the voice coil wire into a band shape, and it also acts as a diaphragm. Its electromagnetic performance is similar to that of a voice coil. Both resistance and inductance exist, but its resistance and inductance are relatively small, so its phase distortion and amplitude distortion are relatively small, but its efficiency is low.
  • the sound generated by force and vibration belongs to dynamic coil speakers, so the technical solution of the present invention is applicable to these speakers.
  • FIG. 1 is a schematic structural diagram of a dynamic coil speaker in the prior art.
  • FIG. 2 is a schematic diagram of a dynamic coil speaker in the prior art.
  • FIG. 3 is a schematic diagram of an electrostatic speaker in the prior art.
  • FIG. 4 is a schematic diagram of the first embodiment.
  • FIG. 5 is a schematic diagram of Embodiment 2.
  • FIG. 5 is a schematic diagram of Embodiment 2.
  • FIG. 6 is a schematic diagram of the third embodiment.
  • FIG. 7 is a schematic diagram of the fourth embodiment.
  • FIG. 8 is a schematic diagram of the fifth embodiment.
  • FIG. 9 is a schematic diagram of Embodiment 6.
  • FIG. 10 is a schematic diagram of the seventh embodiment.
  • FIG. 11 is a schematic diagram of the eighth embodiment.
  • FIG. 12 is a schematic diagram of Embodiment 9.
  • FIG. 12 is a schematic diagram of Embodiment 9.
  • FIG. 13 is a schematic diagram of the tenth embodiment.
  • FIG. 14 is a schematic diagram of the eleventh embodiment.
  • FIG. 15 is a schematic diagram of Embodiment 12.
  • FIG. 16 is a schematic diagram of the thirteenth embodiment.
  • FIG. 17 is a schematic diagram of the fourteenth embodiment.
  • FIG. 18 is a schematic diagram of Embodiment 15.
  • FIG. 19 is a schematic diagram of Embodiment 16.
  • FIG. 20 is a schematic diagram of Embodiment 17.
  • FIG. 21 is a schematic diagram of Embodiment 18.
  • FIG. 22 is a schematic diagram of Embodiment 19.
  • FIG. 23 is a schematic diagram of Embodiment 20.
  • FIG. 24 is a schematic diagram of Embodiment 21.
  • FIG. 25 is a schematic diagram of Embodiment 22.
  • FIG. 26 is a schematic diagram of Embodiment 23.
  • FIG. 27 is a schematic diagram of Embodiment 24.
  • FIG. 27 is a schematic diagram of Embodiment 24.
  • FIG. 28 is a schematic diagram of Embodiment 25.
  • FIG. 28 is a schematic diagram of Embodiment 25.
  • FIG. 29 is a schematic diagram of Embodiment 26.
  • FIG. 30 is a schematic diagram of Embodiment 27.
  • FIG. 30 is a schematic diagram of Embodiment 27.
  • Embodiment 1 An electrostatic speaker provided by the present invention, as shown in FIG. 4, includes: an audio transformer (301), a first-order differential operation module (401), a high-voltage DC power supply (302), two fixed electrode plates (303), and Diaphragm (304); the audio transformer (301) boosts the input audio signal, the high-voltage DC power supply (302) provides a net charge to the diaphragm (304), and the diaphragm (304) Between the two fixed plates (303), the first order differential operation module (401) has a function of performing a first order differential operation on a signal, and the first order differential operation function of the first order differential operation module (401) It can be implemented by hardware or software; after the input audio signal is boosted by the audio transformer (301), first-order differential operation is performed by the first-order differential operation module (401). A signal is added to the two fixed plates (303) to form a changing electric field between the two fixed plates (303), and the diaphragm (304) is subjected to an electric field force applied by the changed
  • the first order differential operation module (401) in this embodiment may also be integrated with the audio transformer (301), so that the first order differential operation function of the first order differential operation module (401) is provided in the audio transformer ( 301) Internal implementation.
  • Embodiment 2 An electrostatic speaker provided by the present invention, as shown in FIG. 5, includes: an audio transformer (301), a second-order differential operation module (501), a high-voltage DC power supply (302), two fixed electrode plates (303), and Diaphragm (304); the high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304), and the diaphragm (304) is located on the two fixed plates (303) ),
  • the second-order differential operation module (501) has a function of performing second-order differential operation on a signal, and the second-order differential operation function of the second-order differential operation module (501) may be implemented by hardware or software, and input audio After the signal is boosted by the audio transformer (301), a second order differential operation is performed by the second order differential operation module (501), and the signals output by the second order differential operation module (501) are added to the two fixed A variable electric field is formed on the electrode plate (303) between the two fixed electrode plates (303), and the diaphra
  • the second-order differential operation module (501) in this embodiment may also be integrated with the audio transformer (301), so that the second-order differential operation function of the second-order differential operation module (501) is provided in the audio transformer ( 301) Internal implementation.
  • Embodiment 3 An electrostatic speaker provided by the present invention, as shown in FIG. 6, includes: an audio transformer (301), a third-order differential operation module (601), a high-voltage DC power supply (302), two fixed electrode plates (303), and Diaphragm (304); the high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304), and the diaphragm (304) is located on the two fixed plates (303) ),
  • the third-order differential operation module (601) has a function of performing a third-order differential operation on a signal, and the third-order differential operation function of the third-order differential operation module (601) may be implemented by hardware or software, and input audio After the signal is boosted by the audio transformer (301), a third-order differential operation is performed by the third-order differential operation module (601), and the signals output by the third-order differential operation module (601) are added to the two fixed A variable electric field is formed on the electrode plate (303) between the two fixed electrode plates (303),
  • the third-order differential operation module (601) in this embodiment may also be integrated with the audio transformer (301), so that the third-order differential operation function of the third-order differential operation module (601) is implemented in the audio transformer ( 301) Internal implementation.
  • an electrostatic speaker provided by the present invention includes: a first-order differential operation module (401), an audio transformer (301), a high-voltage DC power supply (302), two fixed electrode plates (303), and Diaphragm (304); the high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304), and the diaphragm (304) is located on the two fixed plates (303) ),
  • the first-order differential operation module (401) has a function of performing a first-order differential operation on a signal, and the first-order differential operation function of the first-order differential operation module (401) may be implemented by hardware or software; input audio The signal is subjected to a first-order differential operation by the first-order differential operation module (401) and then boosted by the audio transformer (301).
  • the signals output by the audio transformer (301) are added to the two fixed plates ( 303) so that a changing electric field is formed between the two fixed electrode plates (303), and the diaphragm (304) is vibrated to generate sound by the electric field force applied by the changing electric field.
  • the first order differential operation module (401) in this embodiment may also be integrated with the audio transformer (301), so that the first order differential operation function of the first order differential operation module (401) is provided in the audio transformer ( 301) Internal implementation.
  • Embodiment 5 An electrostatic speaker provided by the present invention, as shown in FIG. 8, includes: two first-order differential operation modules (401), an audio transformer (301), a high-voltage DC power supply (302), and two fixed electrode plates (303 ) And diaphragm (304); the high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304), and the diaphragm (304) is located on the two fixed plates (303), the first order differential operation module (401) has a function of performing a first order differential operation on a signal, and the first order differential operation function of the first order differential operation module (401) may be implemented by hardware or software; The input audio signal is firstly subjected to a first order differential operation by one of the first order differential operation modules (401), and then added to the signal input terminal of the audio transformer (301), and the signal output by the audio transformer (301) is then passed through The other first-order differential operation module (401) performs a first-order differential operation and adds the two
  • one of the two first-order differential operation modules (401) or one of them can also be integrated with the audio transformer (301), so that the differential operation function of the first-order differential operation module (401) can be used in all places.
  • the internal implementation of the audio transformer (301) is described.
  • Embodiment 6 An electrostatic speaker provided by the present invention, as shown in FIG. 9, includes: an audio transformer (301), a high-voltage DC power supply (302), a second-order differential circuit (901), two fixed pole plates (303), and a vibrator.
  • the second-order differential circuit (901) has a function of performing a second-order differential operation on a signal, and the second-order differential circuit (901) is integrated on one of the fixed plates (303), so
  • the high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304), and the diaphragm (304) is located between the two fixed plates (303); an input audio signal First boosted by the audio transformer (301) and then performed second-order differential operation by the second-order differential circuit (901), and then added to the two fixed pole plates (303), so that the two fixed poles A changing electric field is formed between the plates (303), and the diaphragm (304) is vibrated to generate sound by the electric field force applied by the changing electric field.
  • Embodiment 7 An apparatus for processing voice information provided by the present invention, as shown in FIG. 10, includes: a first-order differential operation module (401), an audio signal amplifier, and an electrostatic speaker; the first-order differential operation module (401) has A function of performing a first order differential operation on a signal.
  • the first order differential operation function of the first order differential operation module (401) may be implemented by hardware or software.
  • An input audio signal is first order differential performed by the first order differential operation module (401). The signal is added to the signal input terminal of the audio signal amplifier after the operation, and the signal output from the audio signal amplifier is added to the signal input terminal of the electrostatic speaker so that the electrostatic speaker generates sound; the first-order differential operation in this embodiment
  • the module (401) may also be implemented inside the audio signal amplifier.
  • Embodiment 8 A device for processing voice information provided by the present invention, as shown in FIG. 11, includes: two first-order differential operation modules (401), an audio signal amplifier, and an electrostatic speaker; the first-order differential operation module ( 401) has a function of performing a first order differential operation on a signal, and the first order differential operation function of the first order differential operation module (401) can be implemented by hardware or software, and the input audio signal first passes through one of the first order differential operations described above
  • the module (401) performs a first-order differential operation and adds the signal to the signal input terminal of the audio signal amplifier.
  • the signal output by the audio signal amplifier is further subjected to the first-order differential operation by the another first-order differential operation module (401). It is added to the signal input end of the electrostatic speaker so that the electrostatic speaker generates sound; two or one of the first-order differential operation modules (401) in this embodiment may also be integrated into the audio signal amplifier and implemented.
  • Embodiment 9 A device for processing voice information provided by the present invention, as shown in FIG. 12, includes: a second-order differential operation module (501), an audio signal amplifier, and an electrostatic speaker; the second-order differential operation module (501) has The function of performing second order differential operation on signals.
  • the second order differential operation function of the second order differential operation module (501) can be implemented by hardware or software.
  • the input audio signal is second order differential performed by the second order differential operation module (501). After the calculation, the signal is input to the audio signal amplifier, and the signal output from the audio signal amplifier is added to the signal input of the electrostatic speaker so that the electrostatic speaker generates sound.
  • the module (501) may also be implemented by being integrated inside the audio signal amplifier.
  • Embodiment 10 An apparatus for processing voice information provided by the present invention, as shown in FIG. 13, includes: an audio signal amplifier, a second-order differential operation module (501), and an electrostatic speaker; the second-order differential operation module (501) has The function of performing second order differential operation on signals.
  • the second order differential operation function of the second order differential operation module (501) can be implemented by hardware or software.
  • the input audio signal is amplified by the audio signal amplifier and added to the second order differential.
  • a signal input terminal of an operation module (501), and a signal output by the second-order differential operation module (501) is added to a signal input terminal of the electrostatic speaker so that the electrostatic speaker generates sound; the second-order differential in this embodiment
  • the operation module (501) may also be implemented by being integrated inside the audio signal amplifier.
  • Embodiment 11 An apparatus for processing voice information provided by the present invention, as shown in FIG. 14, includes: an audio signal amplifier, a third-order differential operation module (601), and an electrostatic speaker; the third-order differential operation module (601) has a pair of signals A function of performing a third-order differential operation.
  • the third-order differential operation function of the third-order differential operation module (601) may be implemented by hardware or software.
  • An input audio signal is amplified by the audio signal amplifier and added to the third-order differential operation.
  • a signal input terminal of the module (601), and a signal output by the third-order differential operation module (601) is added to a signal input terminal of the electrostatic speaker so that the electrostatic speaker generates sound; the third-order differential operation in this embodiment
  • the module (601) may also be implemented inside the audio signal amplifier.
  • Embodiment 12 An apparatus for processing voice information provided by the present invention, as shown in FIG. 15, includes: a first-order differential operation module (401), an audio signal amplifier, a second-order differential operation module (501), and an electrostatic speaker; A first order differential operation module (401) has a function of performing a first order differential operation on a signal, and the second order differential operation module (501) has a function of performing a second order differential operation on the signal.
  • the first order differential operation module (401) and The differential operation function of the second-order differential operation module (501) can be implemented by hardware or software.
  • the input audio signal is subjected to first-order differential operation by the first-order differential operation module (401) and added to the audio signal amplifier.
  • the signal output by the audio signal amplifier is subjected to a second order differential operation by the second order differential operation module (501), and the signal output by the second order differential operation module (501) is added to the electrostatic speaker.
  • the signal input end causes the electrostatic speaker to generate sound; the positions of the first-order differential operation module (401) and the second-order differential operation module (501) in this embodiment can be mutually ;
  • the first derivative calculation block (401) and a second order differential operator module (501) one or both may also be integrated within the audio signal amplifier is implemented.
  • Embodiment 13 An apparatus for processing voice information provided by the present invention, as shown in FIG. 16, includes: an audio signal amplifier, a first-order differential operation module (401), and a dynamic coil speaker; the first-order differential operation module (401) It has the function of performing first order differential operation on the signal.
  • the first order differential operation function of the first order differential operation module (401) can be implemented by hardware or software.
  • the input audio signal is amplified by the audio signal amplifier and added to the first order.
  • a signal input terminal of the first order differential operation module (401), and a signal output by the first order differential operation module (401) is added to the signal input terminal of the dynamic coil speaker so that the electrostatic speaker generates sound; in this embodiment,
  • the first-order differential operation module (401) may also be implemented inside the audio signal amplifier.
  • Embodiment 14 An apparatus for processing voice information provided by the present invention, as shown in FIG. 17, includes: an audio signal amplifier, a second-order differential operation module (501), and a dynamic coil speaker; the second-order differential operation module (501)
  • the second-order differential operation function of the second-order differential operation module (501) can be implemented by hardware or software.
  • the input audio signal is amplified by the audio signal amplifier and added to the second-order differential operation.
  • a signal input terminal of the first order differential operation module (501), and a signal output by the second order differential operation module (501) is added to a signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound;
  • the second-order differential operation module (501) in the example may also be implemented by being integrated inside the audio signal amplifier.
  • Embodiment 15 An apparatus for processing voice information provided by the present invention, as shown in FIG. 18, includes: two first-order differential operation modules (401), an audio signal amplifier, and a dynamic speaker; the two first-order differentials
  • the operation module (401) has a function of performing a first order differential operation on the signal.
  • the first order differential operation function of the two first order differential operation modules (401) can be implemented by hardware or software.
  • One of the first-order differential operation modules (401) performs a first-order differential operation and adds the signal to the signal input terminal of the audio signal amplifier, and the signal output by the audio signal amplifier passes through the other first-order differential operation module (401 ) After performing a first order differential operation, the signal is added to the signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound; in this embodiment, two first order differential operation modules (401) or one of them may also be used.
  • the integration is implemented inside the audio signal amplifier.
  • Embodiment 16 An apparatus for processing voice information provided by the present invention, as shown in FIG. 19, includes: an audio signal amplifier, a third-order differential operation module (601), and a dynamic coil speaker; the third-order differential operation module (601) It has a function of performing a third order differential operation on a signal.
  • the third order differential operation function of the third order differential operation module (601) can be implemented by hardware or software.
  • the input audio signal is amplified by the audio signal amplifier and added to the third order.
  • a signal input terminal of a first-order differential operation module (601), and a signal output by the third-order differential operation module (601) is added to a signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound;
  • the third-order differential operation module (601) in the example may also be implemented by being integrated inside the audio signal amplifier.
  • Embodiment 17 A device for processing voice information provided by the present invention, as shown in FIG. 20, includes: a third-order differential operation module (601), an audio signal amplifier, and a dynamic speaker; the third-order differential operation module (601) It has a function of performing a third order differential operation on a signal.
  • the third order differential operation function of the third order differential operation module (601) can be implemented by hardware or software.
  • the input audio signal is performed by the third order differential operation module (601).
  • Added to the signal input terminal of the audio signal amplifier after the order differential operation, and the signal output from the audio signal amplifier is added to the signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound; this embodiment
  • the third-order differential operation module (601) can also be integrated into the audio signal amplifier and implemented.
  • Embodiment 18 An apparatus for processing voice information provided by the present invention, as shown in FIG. 21, includes: a first-order differential operation module (401), an audio signal amplifier, a second-order differential operation module (501), and a band speaker; A first order differential operation module (401) has a function of performing a first order differential operation on a signal, and the second order differential operation module (501) has a function of performing a second order differential operation on a signal, and the first order differential operation module (401)
  • the differential operation function of the second-order differential operation module (501) may be implemented by hardware or software.
  • An input audio signal is subjected to a first-order differential operation by the first-order differential operation module (401) and added to the audio signal amplifier.
  • a signal input terminal, and the signal output by the audio signal amplifier is subjected to a second-order differential operation by the second-order differential operation module (501), and then added to the signal input terminal of the band speaker, so that the band speaker generates Sound; or one of the first order differential operation module (401) and the second order differential operation module (501) in this embodiment may also be implemented by being integrated inside the audio signal amplifier.
  • Embodiment 19 An apparatus for processing voice information provided by the present invention, as shown in FIG. 22, includes: an audio signal amplifier, a fourth-order differential operation module (2201), and a dynamic coil speaker; the fourth-order differential operation module (2201) It has a function of performing a fourth-order differential operation on a signal.
  • the fourth-order differential operation function of the fourth-order differential operation module (2201) can be implemented by hardware or software.
  • the input audio signal is amplified by the audio signal amplifier and added to the fourth A signal input terminal of the first-order differential operation module (2201), and a signal output by the fourth-order differential operation module (2201) is added to a signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound;
  • the fourth-order differential operation module (2201) in the example may also be implemented by being integrated inside the audio signal amplifier.
  • Embodiment 20 A device for processing voice information provided by the present invention, as shown in FIG. 23, includes: two second-order differential operation modules (501), an audio signal amplifier, and a dynamic coil speaker; the second-order differential operation module ( 501) has a function of performing a second order differential operation on a signal, and the second order differential operation function of the second order differential operation module (501) may be implemented by hardware or software, and the input audio signal first passes through one of the second order differential operations described above
  • the module (501) performs a second-order differential operation and adds the signal to the signal input terminal of the audio signal amplifier.
  • the signal output by the audio signal amplifier passes through the second-order differential operation module (501) to perform a second-order differential operation.
  • the two second-order differential operation modules (501) in this embodiment can also be integrated inside the audio signal amplifier to implement .
  • Embodiment 21 An apparatus for processing voice information provided by the present invention, as shown in FIG. 24, includes: an audio signal amplifier, a fifth-order differential operation module (2401), and a dynamic coil speaker; the fifth-order differential operation module (2401) It has the function of performing fifth order differential operation on the signal.
  • the fifth order differential operation function of the fifth order differential operation module (2401) can be implemented by hardware or software.
  • the input audio signal is amplified by the audio signal amplifier and added to the fifth order.
  • the signal input terminal of the first order differential operation module (2401), and the signal output by the fifth order differential operation module (2401) is added to the signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound; this implementation
  • the fifth-order differential operation module (2401) in the example may also be implemented by being integrated inside the audio signal amplifier.
  • Embodiment 22 An apparatus for processing voice information provided by the present invention, as shown in FIG. 25, includes: a second-order differential operation module (501), an audio signal amplifier, a third-order differential operation module (601), and a dynamic coil speaker;
  • the second-order differential operation module (501) has a function of performing a second-order differential operation on a signal
  • the third-order differential operation module (601) has a function of performing a third-order differential operation on a signal
  • the second-order differential operation module (501) and the differential operation function of the third-order differential operation module (601) may be implemented by hardware or software, and an input audio signal is added to the audio after the second-order differential operation is performed by the second-order differential operation module (501).
  • a signal input terminal of a signal amplifier, and a signal output from the audio signal amplifier is subjected to a third-order differential operation by the third-order differential operation module (601), and then added to a signal input terminal of the dynamic coil speaker to make the dynamic
  • the ring speaker generates sound; the second order differential operation module (501) and the third order differential operation module (601) or one of them in this embodiment may also be integrated into the audio signal amplifier and implemented.
  • Embodiment 23 A communication device provided by the present invention, as shown in FIG. 26, includes: a memory, a digital-to-analog conversion module (D / A conversion module), an audio signal amplifier, a second-order differential operation module, and an electrostatic speaker; the memory may The digital audio signal is temporarily stored.
  • the digital-to-analog conversion module (D / A conversion module) can convert the received digital audio signal into a corresponding analog audio signal.
  • the second-order differential operation module has a function of processing the analog audio signal.
  • a second-order differential operation function The second-order differential operation function of the second-order differential operation module may be implemented by hardware or software; the digital audio signal output from the memory is converted by the digital-to-analog conversion module (A / D conversion module).
  • the analog audio signal output by the audio signal amplifier is subjected to a second order differential operation by the second order differential operation module and added to the electrostatic speaker.
  • the second-order differential module described in this embodiment may be replaced by a first-order or third-order differential operation module, and the differential operation function of the first-order or third-order differential operation module may be implemented by hardware or software.
  • a communication device includes: a memory, a digital-to-analog conversion module (D / A conversion module), an audio signal amplifier, a third-order differential operation module, and a dynamic coil speaker;
  • the memory can store digital audio signals, and the digital-to-analog conversion module (D / A conversion module) can convert the received digital audio signals into corresponding analog audio signals;
  • the third-order differential operation module has a function of converting the digital-to-analog signals.
  • the analog audio signal output by the module performs a third-order differential operation function.
  • the third-order differential operation function of the third-order differential operation module may be implemented by hardware or software; the digital audio signal output from the memory is passed through the digital-to-analog conversion module ( D / A conversion module) converts the corresponding analog audio signal to the signal input terminal of the audio signal amplifier, and the analog audio signal output by the audio signal amplifier is subjected to third-order differential operation by the third-order differential operation module. It is added to the signal input end of the dynamic coil speaker, so that the dynamic coil speaker generates sound.
  • the third-order differential operation module described in this embodiment may be replaced by a first-, second-, fourth-, or fifth-order differential operation module.
  • the differential-operation operations of the first-, second-, fourth-, or fifth-order differential module are described. Functions can be implemented in hardware or software.
  • Embodiment 25 A communication device provided by the present invention, as shown in FIG. 28, includes an acoustic-electric conversion module, a second-order differential operation module, an analog-to-digital conversion module (A / D conversion module), a carrier generator, a modulator, and a signal.
  • a / D conversion module an analog-to-digital conversion module
  • the acoustic-electrical conversion module converts speech information generated by an audio information source into a corresponding analog audio-electric signal
  • the second-order differential operation module has a function of performing a second-order differential operation on the analog audio-electric signal,
  • the second-order differential operation function of the second-order differential operation module can be implemented by hardware or software
  • the analog-to-digital conversion module (A / D conversion module) converts the received analog audio electrical signals into corresponding digital audio signals
  • the carrier generator is used to generate a high-frequency carrier (the frequency is generally in the range of 800MHz to 2500MHz, which is convenient for long-distance transmission), and the modulator can perform operations on the digital audio signal to be transmitted and the carrier, so that the calculated carrier includes Information of the digital audio signal;
  • the signal amplifier amplifies the modulated wave output by the modulator to achieve sufficient power to facilitate transmission
  • the modulated carrier (including information of the digital audio signal) is converted into an electromagnetic wave by the antenna and transmitted.
  • the second-order differential operation module described in this embodiment may be replaced by a first-, third-, fourth-, or fifth-order differential operation module, and the differential-operation function of the first-, third-, fourth-, or fifth-order differential operation module. It can be implemented in hardware or software.
  • Embodiment 26 As shown in FIG. 29, a communication device provided by the present invention includes an antenna, a primary signal amplifier, a demodulator, a digital-to-analog conversion module (D / A conversion module), a second-order differential operation module, and a final-stage signal.
  • a communication device includes an antenna, a primary signal amplifier, a demodulator, a digital-to-analog conversion module (D / A conversion module), a second-order differential operation module, and a final-stage signal.
  • the antenna is used to receive electromagnetic waves transmitted from space, the primary signal amplifier amplifies the weak electrical signal received by the antenna, and the demodulator will send the end from the received modulated wave
  • the digital audio signal sent is restored, and the digital-to-analog conversion module (D / A conversion module) converts the digital audio signal restored by the demodulator into a corresponding analog audio signal
  • the second-order differential operation module has The function of performing second order differential operation on the analog audio signal, and the function of second order differential operation of the second order differential operation module may be implemented by hardware or software; the analog audio signal is performed second order by the second order differential operation module.
  • the signal is amplified by the final stage signal amplifier, and the signal output by the final stage signal amplifier is added to the signal input terminal of the electrostatic speaker, so that Said electrostatic speakers produce sound.
  • the second-order differential operation module described in this embodiment may be replaced by a module having a first-order or third-order differential operation function, and the differential operation function of the module having the first-order or third-order differential operation function may be hardware or software. achieve.
  • a communication device As shown in FIG. 30, a communication device provided by the present invention includes an antenna, a primary signal amplifier, a demodulator, a digital-to-analog conversion module (D / A conversion module), a third-order differential operation module, and a final-stage signal.
  • Amplifier and dynamic coil speaker the antenna is used to receive electromagnetic waves from space, and the primary signal amplifier is used to amplify the weak electrical signal (the voltage is generally mV or ⁇ V level) received by the antenna
  • the demodulator restores the digital audio signal sent by the sender from the received modulated wave, and the digital-to-analog conversion module (D / A conversion module) converts the digital audio signal restored by the demodulator.
  • the third-order differential operation module has a function of performing a third-order differential operation on the analog audio signal, and the differential operation function of the third-order differential operation module may be implemented by hardware or software; the simulation
  • the audio signal is subjected to a third-order differential operation by the third-order differential operation module, and then amplified by the final-stage signal amplifier.
  • the analog audio signal output by the final-stage signal amplifier is added to the signal amplifier.
  • Signal input dynamic speaker so that the sound generated by the speaker moving coil.
  • the third-order differential operation module described in this embodiment may be replaced by a module having a first-, second-, fourth-, or fifth-order differential operation function, and the first-, second-, fourth-, or fifth-order differential operations are described.
  • the differential calculation function of the functional module can be realized by hardware or software.

Abstract

With the existence of digital technology being applied to a sound source device and a high-fidelity audio amplifier (the distortion≤0.02％), it is difficult for a moving-coil loudspeaker widely used at present to keep up with the loudspeaker technology due to large distortion (the distortion is about 3%) of output sound caused by the working principle and its mechanical structure defect, and becomes a bottleneck of a loudspeaker playback system. At present, electric-acoustics scientific and technological circles and industries start focusing on an electrostatic loudspeaker having a relatively simple structure and excellent performance (a frequency response of 20-30000 Hz and the distortion≤0.05％). Theories prove that both the moving-coil loudspeaker and the electrostatic loudspeaker have heavy amplitude-frequency distortion. The technical solution provided in the present invention can effectively reduce the amplitude-frequency distortion of the moving-coil loudspeaker and the electrostatic loudspeaker.

Description

一种静电扬声器、动圈式扬声器及处理音频信号的装置Electrostatic speaker, dynamic coil speaker and device for processing audio signals
技术领域：本发明属于声像技术领域，具体是一种静电扬声器、动圈式扬声器及处理音频信号的装置。Technical Field: The present invention belongs to the field of audiovisual technology, and particularly relates to an electrostatic speaker, a dynamic coil speaker, and a device for processing audio signals.
背景技术：Background technique:
随着数字技术用于音源设备和高保真音频放大器的出现，在高保真音响系统中末级功率放大器输出的音频信号可以做到失真比较小(≤0.02％)，但现在扬声器的主流产品____动圈式扬声器失真相对较大，约为2～3％，动圈式扬声器无法还原高保真数字音频信号的声音信息，已成为音响系统的瓶颈。图1和图2分别是动圈式扬声器的结构图和原理图，振膜(102)、定心支片(104)与音圈(103)连接在一起，音圈(103)处于磁场中(在图2中用会聚、带有箭头的虚线表示)，音圈(103)中有音频电流通过时受磁场力的作用振动，从而带动振膜(102)振动产生声音。With the advent of digital technology for audio source equipment and high-fidelity audio amplifiers, the audio signal output by the final power amplifier in a high-fidelity audio system can achieve relatively low distortion (≤0.02%), but now mainstream products of speakers ___ The distortion of dynamic coil speakers is relatively large, about 2 to 3%. The dynamic coil speakers cannot restore the sound information of high-fidelity digital audio signals, which has become the bottleneck of the audio system. Figures 1 and 2 are the structural and schematic diagrams of a dynamic coil speaker, respectively. The diaphragm (102), centering support (104) and voice coil (103) are connected together, and the voice coil (103) is in a magnetic field ( In FIG. 2, it is indicated by a converged, dotted line with an arrow.) In the voice coil (103), an audio current passes through the magnetic field force to vibrate, thereby driving the diaphragm (102) to vibrate to generate sound.
如图2，设音圈(103)所处磁场的磁感应强度为B，音圈(103)的质量为m、电阻为r、音圈导线的有效长度为l、电感为L，在开始时刻输入音频信号
Figure PCTCN2019089991-appb-000001
经过一段时间t，音圈(103)的速度为v(t)、电流为i(t)，则： As shown in Figure 2, the magnetic induction strength of the magnetic field where the voice coil (103) is located is B, the mass of the voice coil (103) is m, the resistance is r, the effective length of the voice coil wire is 1, and the inductance is L. audio signal
Figure PCTCN2019089991-appb-000001
After a period of time t, the speed of the voice coil (103) is v (t) and the current is i (t), then:
Figure PCTCN2019089991-appb-000002
Figure PCTCN2019089991-appb-000002
Figure PCTCN2019089991-appb-000003
Figure PCTCN2019089991-appb-000003
由(1)、(2)得：From (1), (2):
Figure PCTCN2019089991-appb-000004
Figure PCTCN2019089991-appb-000004
将
Figure PCTCN2019089991-appb-000005
代入(3)式并整理，得： will
Figure PCTCN2019089991-appb-000005
Substituting into (3) and finishing, we get:
Figure PCTCN2019089991-appb-000006
Figure PCTCN2019089991-appb-000006
由(4)式解得i(t)，进一步求得音圈(103)的速度：
Figure PCTCN2019089991-appb-000007
最后得到音圈(103)的振动方程[也就是振膜(102)的振动方程]：
Figure PCTCN2019089991-appb-000008
从而可以定量分析动圈式扬声器的失真，但从(4)式求解i(t)需要解非线性微分方程，运算较复杂，甚至解不出i(t)。 Solve i (t) from Equation (4), and further find the speed of voice coil (103):
Figure PCTCN2019089991-appb-000007
Finally, the vibration equation [that is, the vibration equation of the diaphragm (102)] of the voice coil (103) is obtained:
Figure PCTCN2019089991-appb-000008
Therefore, it is possible to quantitatively analyze the distortion of a dynamic coil speaker, but solving i (t) from equation (4) requires solving a nonlinear differential equation, the operation is complicated, and even i (t) cannot be solved.
为了定量分析动圈式扬声器的失真，下面用叠加原理近似处理：将由于音圈运动产生的电动势(Blv)与音圈电阻和电感上的电压独立地分开考虑，最后再叠加得到音圈中实际的电流i(t)。In order to quantitatively analyze the distortion of moving coil speakers, the following approximation is applied using the superposition principle: the electromotive force (Blv) generated by the voice coil movement and the voltage on the voice coil resistance and inductance are considered separately, and then superimposed to obtain the actual voice coil Current i (t).
如图2为动圈式扬声器的原理图，设音圈(103)所处磁场的磁感应强度为B，音圈(103)的质量为m、电阻为r、音圈导线的有效长度为l、电感为L，在t＝0时刻输入音频信号
Figure PCTCN2019089991-appb-000009
Figure PCTCN2019089991-appb-000010
音圈(103)的阻抗为Z＝r+jnωL，n＝1，2，3，……，经过一段时间t，音圈(103)中的电流为i(t),由基尔霍夫电压定律,得: Figure 2 is a schematic diagram of a dynamic coil speaker. Set the magnetic induction intensity of the magnetic field where the voice coil (103) is located, the mass of the voice coil (103) is m, the resistance is r, and the effective length of the voice coil wire is l, Inductance is L, input audio signal at t = 0
Figure PCTCN2019089991-appb-000009
Figure PCTCN2019089991-appb-000010
The impedance of the voice coil (103) is Z = r + jnωL, n = 1, 2, 3, ..., after a period of time t, the current in the voice coil (103) is i (t), and the Kirchhoff voltage The law, we get:
Figure PCTCN2019089991-appb-000011
Figure PCTCN2019089991-appb-000011
解得：
Figure PCTCN2019089991-appb-000012
Solutions have to:
Figure PCTCN2019089991-appb-000012
(5)式中等式右边第一项为暂态电流i 0(t)[t→∞时，i 0(t)＝0]，第二项为稳态电流i 1(t)；因为只有稳态电流i 1(t)中包含有输入音频信号u(t)的信息，所以只有稳态电流i 1(t)会影响扬声器输出声音信息的失真，为方便讨论扬声器的失真，只需考虑稳态电流i 1(t)；由(5)式可知音圈〖103〗中的稳态电流为： (5) Equation The first term on the right side of the equation is the transient current i 0 (t) [t → ∞, i 0 (t) = 0], and the second term is the steady-state current i 1 (t); The state current i 1 (t) contains the information of the input audio signal u (t), so only the steady state current i 1 (t) will affect the distortion of the speaker's output sound information. To facilitate the discussion of speaker distortion, only the steady state State current i 1 (t); from equation (5), the steady state current in voice coil [103] is:
Figure PCTCN2019089991-appb-000013
Figure PCTCN2019089991-appb-000013
注：由(6)式可知：音圈中稳态电流是和输入音频信号同频率的正弦信号，相位相对于输入音频信号相移了角度
Figure PCTCN2019089991-appb-000014
稳态电流的幅度等于输入音频信号的幅度除以音圈阻抗的模值。以后在涉及扬声器对信号的处理中，所讨论的稳态电流都是这样处理得到的，不再一一运算和说明。 Note: According to formula (6), the steady-state current in the voice coil is a sinusoidal signal with the same frequency as the input audio signal, and the phase is shifted by an angle relative to the input audio signal
Figure PCTCN2019089991-appb-000014
The magnitude of the steady-state current is equal to the magnitude of the input audio signal divided by the modulus of the voice coil impedance. In the subsequent processing of signals involving speakers, the steady-state currents discussed are all obtained in this way, and will not be calculated and explained one by one.
音圈(103)受到的安培力：
Figure PCTCN2019089991-appb-000015
Ampere force to voice coil (103):
Figure PCTCN2019089991-appb-000015
音圈(103)的加速度：
Figure PCTCN2019089991-appb-000016
The acceleration of the voice coil (103):
Figure PCTCN2019089991-appb-000016
音圈(103)的速度：Speed of Voice Coil (103):
Figure PCTCN2019089991-appb-000017
Figure PCTCN2019089991-appb-000017
Figure PCTCN2019089991-appb-000018
Figure PCTCN2019089991-appb-000018
音圈(103)由于切割磁感应线而产生的反电动势：The back electromotive force of the voice coil (103) due to the cutting of the magnetic induction wire:
Figure PCTCN2019089991-appb-000019
Figure PCTCN2019089991-appb-000019
考虑到反电动势E 反，音圈(103)中实际电流的稳态部分为： Considering the back EMF E back , the steady state part of the actual current in the voice coil (103) is:
Figure PCTCN2019089991-appb-000020
Figure PCTCN2019089991-appb-000020
音圈(103)中由于流经稳态电流i′使其受到的安培力：Amperage in voice coil (103) due to the steady-state current i ′:
Figure PCTCN2019089991-appb-000021
Figure PCTCN2019089991-appb-000021
音圈(103)实际的加速度：Voice coil (103) actual acceleration:
Figure PCTCN2019089991-appb-000022
Figure PCTCN2019089991-appb-000022
Figure PCTCN2019089991-appb-000023
Figure PCTCN2019089991-appb-000023
音圈(103)实际的速度为：The actual speed of the voice coil (103) is:
Figure PCTCN2019089991-appb-000024
Figure PCTCN2019089991-appb-000024
Figure PCTCN2019089991-appb-000025
Figure PCTCN2019089991-appb-000025
所以音圈(103)的振动方程[即振膜(102)的振动方程，因为振膜(102)和音圈(103)通过定心支片(104)是连接在一起的]为：So the vibration equation of the voice coil (103) [that is, the vibration equation of the diaphragm (102), because the diaphragm (102) and the voice coil (103) are connected together through the centering support (104)]] is:
Figure PCTCN2019089991-appb-000026
Figure PCTCN2019089991-appb-000026
Figure PCTCN2019089991-appb-000027
Figure PCTCN2019089991-appb-000027
Figure PCTCN2019089991-appb-000028
Figure PCTCN2019089991-appb-000028
(7)式中①、②两项为所述动圈式扬声器还原出的声音信息，它们之间存在相位差
Figure PCTCN2019089991-appb-000029
n＝1，2，3，……，此相位差会使得①、②两项相互干扰,影响音质；另外它们的幅度都是nω的函数，说明动圈式扬声器存在幅频失真(属于线性失真)，③、④、⑤、⑥、⑦这几项为所述动圈式扬声器在对所述输入音频信号的处理过程中产生的噪声。由(7)式可知：动圈式扬声器的幅频失真和噪声都很严重，这些失真和噪声是由动圈式扬声器的工作原理决定的；另外，音圈所处磁场的不均匀和不对称、定心支片的位移对驱动力的非线性等因素也会造成失真，这些失真是由动圈式扬声器较复杂(相对于静电扬声器)的机械结构产生的。 (7) The two items ① and ② in the formula are the sound information restored by the moving coil speaker, and there is a phase difference between them.
Figure PCTCN2019089991-appb-000029
n = 1, 2, 3, ..., this phase difference will make ① and ② interfere with each other and affect the sound quality; in addition, their amplitudes are both functions of nω, indicating that there is amplitude-frequency distortion (linear distortion) in dynamic coil speakers ), ③, ④, ⑤, ⑥, and ⑦ are the noise generated by the dynamic coil speaker during the processing of the input audio signal. It can be known from (7) that the amplitude and frequency distortion and noise of the dynamic coil speaker are very serious. These distortions and noise are determined by the working principle of the dynamic coil speaker. In addition, the magnetic field in which the voice coil is located is uneven and asymmetric. The non-linearity of the driving force caused by the displacement of the centering support will also cause distortion. These distortions are caused by the more complex (relative to electrostatic speakers) mechanical structure of the dynamic coil speaker.
为了还原高保真数字音频信号(失真≤0.02％)的声音信息，可采用静电扬声器，其原理如图3，输入音频信号经过音频变压器(301)升压200～300倍后加在两个固定极板(303)上，高压直流电源(302)给振膜(304)提供净电荷(也属于静电荷)，两固定极板(303)相当于电容器，其电容记为C,设音频变压器(301)输出的音频信号
Figure PCTCN2019089991-appb-000030
在t＝0时刻加在固定极板(303)上，则流入固定极板(303)的电流为： In order to restore the sound information of high-fidelity digital audio signals (distortion ≤ 0.02%), an electrostatic speaker can be used. The principle is shown in Figure 3. The input audio signal is boosted by the audio transformer (301) 200 to 300 times and added to two fixed poles. On the plate (303), the high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304). The two fixed electrode plates (303) are equivalent to a capacitor, and its capacitance is denoted as C. An audio transformer (301) is provided. Output audio signal
Figure PCTCN2019089991-appb-000030
At t = 0, the current is applied to the fixed plate (303), and the current flowing into the fixed plate (303) is:
Figure PCTCN2019089991-appb-000031
Figure PCTCN2019089991-appb-000031
两固定极板(303)间的电压：Voltage between two fixed plates (303):
Figure PCTCN2019089991-appb-000032
Figure PCTCN2019089991-appb-000032
设两固定极板(303)间的距离为d，则两极板间的电场强度为：Assuming that the distance between the two fixed plates (303) is d, the electric field strength between the two plates is:
Figure PCTCN2019089991-appb-000033
Figure PCTCN2019089991-appb-000033
设振膜(304)所带静电量为q，则振膜(304)受到的电场力为：Assuming that the amount of static electricity carried by the diaphragm (304) is q, the electric field force received by the diaphragm (304) is:
Figure PCTCN2019089991-appb-000034
Figure PCTCN2019089991-appb-000034
设振膜(304)的质量为m，则振膜(304)的加速度为：Let the mass of the diaphragm (304) be m, then the acceleration of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000035
Figure PCTCN2019089991-appb-000035
振膜(304)的速度为：The speed of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000036
Figure PCTCN2019089991-appb-000036
所以振膜(304)的振动方程为：So the vibration equation of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000037
Figure PCTCN2019089991-appb-000037
Figure PCTCN2019089991-appb-000038
Figure PCTCN2019089991-appb-000038
(8)式中⑧这一项为静电扬声器还原出的声音信息，其幅度也是nω的函数，说明静电扬声器也存在幅频失真，频率越高，失真越严重，信号相对幅度(指所考虑的高频分量与其它频率分量的相对幅度与原输入信号中对应频率分量的相对幅度相比较)越小，音频信号中的高频分量被压制；⑨、⑩、
Figure PCTCN2019089991-appb-000039
这三项为所述静电扬声器在对所述输入音频信号的处理过程中产生的噪声。 (8) The term ⑧ in the formula is the sound information restored by the electrostatic speaker, and its amplitude is also a function of nω, indicating that the electrostatic speaker also has amplitude-frequency distortion. The smaller the relative amplitude of the high-frequency component and other frequency components is compared with the relative amplitude of the corresponding frequency component in the original input signal), the smaller the high-frequency component in the audio signal is suppressed;
Figure PCTCN2019089991-appb-000039
These three items are noise generated by the electrostatic speaker during the processing of the input audio signal.
比较(8)、(7)两式可知：静电扬声器的幅频失真和噪声都比动圈式扬声器小；另外，由于静电扬声器的结构简单、振膜质量极轻，所以机械部件几乎不对信号产生失真。Comparing the two types (8) and (7), it can be seen that the amplitude frequency distortion and noise of the electrostatic speaker are smaller than those of the dynamic coil type speaker. In addition, because the structure of the electrostatic speaker is simple and the diaphragm is extremely light, mechanical components hardly generate signals. distortion.
静电扬声器的优点：理论失真小；振膜质量极轻，因而柔顺性极优，解析力极佳，能捕捉音乐信号中极为细微的变化，使人感到非常逼真，背景噪声小，有临场感，能充分表现音乐的神韵。The advantages of electrostatic speakers are: the theoretical distortion is small; the diaphragm is very light, so it has excellent flexibility, excellent resolution, and can capture very subtle changes in the music signal, making people feel very realistic, background noise is small, and there is a sense of presence, Can fully express the charm of music.
静电扬声器的缺点：需要极化电压；音频变压器对铁心材料和线圈绕法非常讲究，不能标准化生产,产品性能较依赖工人的技术和经验，故产量低、成本高。Disadvantages of electrostatic speakers: Polarized voltage is required; audio transformers are very particular about iron core materials and coil winding methods, and cannot be standardized in production. Product performance depends on workers' technology and experience, so the output is low and the cost is high.
从效果上讲，图像信息对相位失真较敏感，声音信息对幅度失真较敏感。信号幅度相对于各个频率分量的失真称为幅频失真(幅频失真和幅度失真含义相同，好多情况都是混用)。从以上分析可知：静电扬声器和动圈式扬声器都存在较严重的幅频失真。In effect, image information is more sensitive to phase distortion and sound information is more sensitive to amplitude distortion. The distortion of the signal amplitude relative to each frequency component is called amplitude-frequency distortion (amplitude-frequency distortion and amplitude distortion have the same meaning, and are often mixed). From the above analysis, it is known that both electrostatic speakers and dynamic coil speakers have severe amplitude-frequency distortion.
本发明技术方案可以减小静电扬声器(由静电力驱动)和动圈式扬声器(由磁场力驱动)的幅频失真。The technical solution of the present invention can reduce the amplitude-frequency distortion of an electrostatic speaker (driven by an electrostatic force) and a dynamic coil speaker (driven by a magnetic field force).
发明内容：Summary of the invention:
为了减小静电扬声器的幅频失真，可以在输入音频信号传输到所述静电扬声器的两个固定极板之前对其进行微分运算。如图4，两个固定极板(303)相当于电容器，其电容记为C，设音频变压器(301)输出的音频信号
Figure PCTCN2019089991-appb-000040
对u(t)求导，得： In order to reduce the amplitude-frequency distortion of the electrostatic speaker, the input audio signal may be subjected to a differential operation before being transmitted to the two fixed plates of the electrostatic speaker. As shown in Figure 4, the two fixed plates (303) are equivalent to capacitors, and their capacitance is denoted as C. The audio signal output by the audio transformer (301) is set.
Figure PCTCN2019089991-appb-000040
Derivative of u (t), we get:
Figure PCTCN2019089991-appb-000041
Figure PCTCN2019089991-appb-000041
在t＝0时刻将信号u′(t)加到所述静电扬声器的两个固定极板(303)上，则流入固定极板(303)的电流为：At time t = 0, the signal u ′ (t) is added to the two fixed plates (303) of the electrostatic speaker, and the current flowing into the fixed plates (303) is:
Figure PCTCN2019089991-appb-000042
Figure PCTCN2019089991-appb-000042
两个固定极板(303)间的电压：Voltage between two fixed plates (303):
Figure PCTCN2019089991-appb-000043
Figure PCTCN2019089991-appb-000043
Figure PCTCN2019089991-appb-000044
Figure PCTCN2019089991-appb-000044
设两个固定极板(303)间的距离为d，则两个极板间的电场强度为：Let the distance between the two fixed plates (303) be d, then the electric field strength between the two plates is:
Figure PCTCN2019089991-appb-000045
Figure PCTCN2019089991-appb-000045
设振膜(304)所带静电量为q，则振膜(304)受到的电场力为：Assuming that the amount of static electricity carried by the diaphragm (304) is q, the electric field force received by the diaphragm (304) is:
Figure PCTCN2019089991-appb-000046
Figure PCTCN2019089991-appb-000046
设振膜(304)质量为m，则振膜(304)的加速度为：Let the mass of the diaphragm (304) be m, then the acceleration of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000047
Figure PCTCN2019089991-appb-000047
振膜(304)的速度为：The speed of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000048
Figure PCTCN2019089991-appb-000048
所以振膜(304)的振动方程为：So the vibration equation of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000049
Figure PCTCN2019089991-appb-000049
Figure PCTCN2019089991-appb-000050
Figure PCTCN2019089991-appb-000050
(9)式中
Figure PCTCN2019089991-appb-000051
这一项为所述静电扬声器还原出的声音信息，
Figure PCTCN2019089991-appb-000052
为噪声，比较(8)、(9)两式中的⑧和
Figure PCTCN2019089991-appb-000053
可知：所述静电扬声器的幅频失真减小了。所以，在输入音频信号u(t)传输到两固定极板(303)之前先对其进行一阶微分运算可以减小静电扬声器的幅频失真，但(9)式中
Figure PCTCN2019089991-appb-000054
这一项的幅度仍然是nω的函数，还存在幅频失真。为了进一步减小失真，可以将输入音频信号进行二阶微分运算后再加在扬声器的固定极板上。 (9) where
Figure PCTCN2019089991-appb-000051
This item is the sound information restored by the electrostatic speaker.
Figure PCTCN2019089991-appb-000052
For noise, compare the unitary sums in (8) and (9)
Figure PCTCN2019089991-appb-000053
It can be seen that the amplitude-frequency distortion of the electrostatic speaker is reduced. Therefore, before the input audio signal u (t) is transmitted to the two fixed plates (303), first order differential operation can reduce the amplitude frequency distortion of the electrostatic speaker.
Figure PCTCN2019089991-appb-000054
The amplitude of this term is still a function of nω, and there is also amplitude-frequency distortion. In order to further reduce the distortion, the input audio signal can be subjected to a second order differential operation and then added to the fixed pole of the speaker.
如图5，对
Figure PCTCN2019089991-appb-000055
求导，得： As shown in Figure 5, right
Figure PCTCN2019089991-appb-000055
Derivative, get:
Figure PCTCN2019089991-appb-000056
Figure PCTCN2019089991-appb-000056
对u′(t)再次求导，得：Differentiate u ′ (t) again to get:
Figure PCTCN2019089991-appb-000057
Figure PCTCN2019089991-appb-000057
在t＝0时刻将信号u″(t)加在静电扬声器的两个固定极板(303)上，则流入固定极板(303)的电流为：At time t = 0, the signal u ″ (t) is added to the two fixed plates (303) of the electrostatic speaker, and the current flowing into the fixed plates (303) is:
Figure PCTCN2019089991-appb-000058
Figure PCTCN2019089991-appb-000058
两个固定极板(303)间的电压：Voltage between two fixed plates (303):
Figure PCTCN2019089991-appb-000059
Figure PCTCN2019089991-appb-000059
设两个固定极板(303)间的距离为d，则所述极板间的电场强度为：Assuming that the distance between two fixed plates (303) is d, the electric field strength between the plates is:
Figure PCTCN2019089991-appb-000060
Figure PCTCN2019089991-appb-000060
设振膜(304)所带静电量为q，则振膜(304)受到的电场力为：Assuming that the amount of static electricity carried by the diaphragm (304) is q, the electric field force received by the diaphragm (304) is:
Figure PCTCN2019089991-appb-000061
Figure PCTCN2019089991-appb-000061
设振膜(304)质量为m，则振膜(304)的加速度为：Let the mass of the diaphragm (304) be m, then the acceleration of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000062
Figure PCTCN2019089991-appb-000062
振膜(304)的速度为：The speed of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000063
Figure PCTCN2019089991-appb-000063
所以振膜(304)的振动方程为：So the vibration equation of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000064
Figure PCTCN2019089991-appb-000064
Figure PCTCN2019089991-appb-000065
Figure PCTCN2019089991-appb-000065
(10)式中
Figure PCTCN2019089991-appb-000066
这一项为所述静电扬声器还原出的声音信息，没有幅频失真，
Figure PCTCN2019089991-appb-000067
这三项为噪声。比较(8)、(10)两式可知：在输入音频信号u(t)传输至两个固定极板之前先对其进行二阶微分运算，理论上可以完全消除静电扬声器的幅频失真。 (10) where
Figure PCTCN2019089991-appb-000066
This item is the sound information restored by the electrostatic speaker without amplitude frequency distortion.
Figure PCTCN2019089991-appb-000067
These three terms are noise. Comparing the two formulas (8) and (10), it can be seen that the input audio signal u (t) is subjected to a second order differential operation before being transmitted to the two fixed plates.
其实对输入音频信号u(t)进行三阶微分运算后再加在静电扬声器的固定极板上也可以减小扬声器的幅频失真，阐述如下：In fact, the third-order differential operation on the input audio signal u (t) can be added to the fixed plate of the electrostatic speaker to reduce the amplitude-frequency distortion of the speaker, as explained below:
如图7，对
Figure PCTCN2019089991-appb-000068
求导，得： As shown in Figure 7, right
Figure PCTCN2019089991-appb-000068
Derivative, get:
Figure PCTCN2019089991-appb-000069
Figure PCTCN2019089991-appb-000069
在t＝0时刻将信号u″′(t)加在静电扬声器的两个固定极板(303)上，则流入固定极板(303)的电流为：At time t = 0, the signal u ′ ′ (t) is added to the two fixed plates (303) of the electrostatic speaker, and the current flowing into the fixed plates (303) is:
Figure PCTCN2019089991-appb-000070
Figure PCTCN2019089991-appb-000070
两个固定极板(303)间的电压：Voltage between two fixed plates (303):
Figure PCTCN2019089991-appb-000071
Figure PCTCN2019089991-appb-000071
设两个固定极板(303)间的距离为d，则所述极板间的电场强度为：Assuming that the distance between two fixed plates (303) is d, the electric field strength between the plates is:
Figure PCTCN2019089991-appb-000072
Figure PCTCN2019089991-appb-000072
设振膜(304)所带静电量为q，则振膜(304)受到的电场力为：Assuming that the amount of static electricity carried by the diaphragm (304) is q, the electric field force received by the diaphragm (304) is:
Figure PCTCN2019089991-appb-000073
Figure PCTCN2019089991-appb-000073
设振膜(304)质量为m，则振膜(304)的加速度为：Let the mass of the diaphragm (304) be m, then the acceleration of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000074
Figure PCTCN2019089991-appb-000074
振膜(304)的速度为：The speed of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000075
Figure PCTCN2019089991-appb-000075
所以振膜(304)的振动方程为：So the vibration equation of the diaphragm (304) is:
Figure PCTCN2019089991-appb-000076
Figure PCTCN2019089991-appb-000076
(11)式中
Figure PCTCN2019089991-appb-000077
这一项为所述静电扬声器还原出的声音信息，
Figure PCTCN2019089991-appb-000078
这三项为噪声。比较(8)、(11)两式可知：在输入音频信号u(t)传输至两个固定极板〖303〗之前先对其进行三阶微分运算也可以减小扬声器的幅频失真。 (11) where
Figure PCTCN2019089991-appb-000077
This item is the sound information restored by the electrostatic speaker.
Figure PCTCN2019089991-appb-000078
These three terms are noise. Comparing the two formulas (8) and (11), it can be known that the third-order differential operation of the input audio signal u (t) before transmission to the two fixed plates [303] can also reduce the amplitude-frequency distortion of the speaker.
比较(8)、(9)、(10)、(11)式可知：在输入音频信号u(t)传输至两固定极板(303)之前先对其进行 一阶、二阶或三阶微分运算都可以减小静电扬声器的幅频失真，其中进行二阶微分运算的情况效果较好。Comparing formulas (8), (9), (10), and (11), it can be seen that the input audio signal u (t) is first-, second-, or third-order differential before being transmitted to the two fixed plates (303). The calculation can reduce the amplitude-frequency distortion of the electrostatic speaker, and the second-order differential operation is effective.
对于动圈式扬声器，此方法是否有效？Does this method work for dynamic coil speakers?
如图2，设音圈(103)所处磁场的磁感应强度为B，音圈(103)的质量为m、电阻为r、音圈导线的有效长度为l、电感为L，音圈(103)的阻抗为Z＝r+jnωL，n＝1，2，3，……，设输入音频信号
Figure PCTCN2019089991-appb-000079
Figure PCTCN2019089991-appb-000080
将信号u(t)的一阶导数
Figure PCTCN2019089991-appb-000081
在t＝0时刻加到音圈(103)上，则音圈(103)中的稳态电流(含有输入音频信号的信息)为： As shown in Figure 2, the magnetic induction intensity of the magnetic field where the voice coil (103) is located is B, the mass of the voice coil (103) is m, the resistance is r, the effective length of the voice coil wire is l, the inductance is L, and the voice coil (103 ) The impedance is Z = r + jnωL, n = 1, 2, 3, ..., let's set the input audio signal
Figure PCTCN2019089991-appb-000079
Figure PCTCN2019089991-appb-000080
First derivative of signal u (t)
Figure PCTCN2019089991-appb-000081
When it is added to the voice coil (103) at t = 0, the steady-state current (containing the information of the input audio signal) in the voice coil (103) is:
Figure PCTCN2019089991-appb-000082
Figure PCTCN2019089991-appb-000082
                                         (此式暂不考虑音圈运动产生的电动势Blv)The electromotive force Blv generated by the motion of the voice coil is not considered in this formula.
音圈(103)中由于流经稳态电流i使其受到的安培力：Amperage in voice coil (103) due to the steady-state current i:
Figure PCTCN2019089991-appb-000083
Figure PCTCN2019089991-appb-000083
音圈(103)的加速度：
Figure PCTCN2019089991-appb-000084
The acceleration of the voice coil (103):
Figure PCTCN2019089991-appb-000084
音圈(103)的速度：
Figure PCTCN2019089991-appb-000085
Speed of Voice Coil (103):
Figure PCTCN2019089991-appb-000085
音圈(103)由于切割磁感应线而产生的反电动势：The back electromotive force of the voice coil (103) due to the cutting of the magnetic induction wire:
Figure PCTCN2019089991-appb-000086
Figure PCTCN2019089991-appb-000086
考虑到反电动势E 反，音圈(103)中实际电流的稳态部分(含有输入音频信号的信息)为： Considering the back EMF E back , the steady state part of the actual current in the voice coil (103) (containing the information of the input audio signal) is:
Figure PCTCN2019089991-appb-000087
Figure PCTCN2019089991-appb-000087
音圈(103)受到的安培力：Ampere force to voice coil (103):
Figure PCTCN2019089991-appb-000088
Figure PCTCN2019089991-appb-000088
音圈(103)实际的加速度：Voice coil (103) actual acceleration:
Figure PCTCN2019089991-appb-000089
Figure PCTCN2019089991-appb-000089
音圈(103)实际的速度为：The actual speed of the voice coil (103) is:
Figure PCTCN2019089991-appb-000090
Figure PCTCN2019089991-appb-000090
Figure PCTCN2019089991-appb-000091
Figure PCTCN2019089991-appb-000091
所以音圈(103)的振动方程[即振膜(102)的振动方程，因为振膜(102)和音圈(103)通过定心支片(104)是连接在一起的]为：So the vibration equation of the voice coil (103) [that is, the vibration equation of the diaphragm (102), because the diaphragm (102) and the voice coil (103) are connected together through the centering support (104)]] is:
Figure PCTCN2019089991-appb-000092
Figure PCTCN2019089991-appb-000092
Figure PCTCN2019089991-appb-000093
Figure PCTCN2019089991-appb-000093
Figure PCTCN2019089991-appb-000094
Figure PCTCN2019089991-appb-000094
(12)式中
Figure PCTCN2019089991-appb-000095
与
Figure PCTCN2019089991-appb-000096
两项是所述动圈式扬声器还原出的声音信息，其它项为噪声，比较(7)式和(12)式中的①与
Figure PCTCN2019089991-appb-000097
②与
Figure PCTCN2019089991-appb-000098
可知：所述扬声器的幅频失真减小了，但并没有完全消除。为进一步减小所述扬声器的幅频失真，可将输入音频信号进行二阶微分运算后再加到音圈上。 (12) where
Figure PCTCN2019089991-appb-000095
versus
Figure PCTCN2019089991-appb-000096
Two items are sound information restored by the moving coil speaker, and the other items are noise. Compare ① and (12) in (7) and (12).
Figure PCTCN2019089991-appb-000097
② with
Figure PCTCN2019089991-appb-000098
It can be seen that the amplitude-frequency distortion of the speaker is reduced, but it is not completely eliminated. To further reduce the amplitude-frequency distortion of the speaker, the input audio signal may be subjected to a second-order differential operation and then added to the voice coil.
如图2，设音圈(103)所处磁场的磁感应强度为B，音圈(103)的质量为m、电阻为r、音圈导线的有效长度为l、电感为L，音圈(103)的阻抗为Z＝r+jnωL，n＝1，2，3，……，设输入音频信号
Figure PCTCN2019089991-appb-000099
Figure PCTCN2019089991-appb-000100
将信号u(t)的二阶导数
Figure PCTCN2019089991-appb-000101
Figure PCTCN2019089991-appb-000102
在t＝0时刻加到音圈(103)上，则音圈(103)中的稳态电流(含有输入音频信号的信息)为： As shown in Figure 2, the magnetic induction intensity of the magnetic field where the voice coil (103) is located is B, the mass of the voice coil (103) is m, the resistance is r, the effective length of the voice coil wire is l, and the inductance is L, ) The impedance is Z = r + jnωL, n = 1, 2, 3, ..., let's set the input audio signal
Figure PCTCN2019089991-appb-000099
Figure PCTCN2019089991-appb-000100
The second derivative of the signal u (t)
Figure PCTCN2019089991-appb-000101
Figure PCTCN2019089991-appb-000102
When it is added to the voice coil (103) at t = 0, the steady-state current (containing the information of the input audio signal) in the voice coil (103) is:
Figure PCTCN2019089991-appb-000103
Figure PCTCN2019089991-appb-000103
                                         (此式暂不考虑音圈运动产生的电动势Blv)The electromotive force Blv generated by the motion of the voice coil is not considered in this formula.
音圈(103)中由于流经稳态电流i使其受到的安培力：Amperage in voice coil (103) due to the steady-state current i:
Figure PCTCN2019089991-appb-000104
Figure PCTCN2019089991-appb-000104
音圈(103)的加速度：
Figure PCTCN2019089991-appb-000105
The acceleration of the voice coil (103):
Figure PCTCN2019089991-appb-000105
音圈(103)的速度：
Figure PCTCN2019089991-appb-000106
Speed of Voice Coil (103):
Figure PCTCN2019089991-appb-000106
Figure PCTCN2019089991-appb-000107
Figure PCTCN2019089991-appb-000107
音圈(103)由于切割磁感应线而产生的反电动势：The back electromotive force of the voice coil (103) due to the cutting of the magnetic induction wire:
Figure PCTCN2019089991-appb-000108
Figure PCTCN2019089991-appb-000108
考虑到反电动势E 反，音圈(103)中实际电流的稳态部分(含有输入音频信号的信息)为： Considering the back EMF E back , the steady state part of the actual current in the voice coil (103) (containing the information of the input audio signal) is:
Figure PCTCN2019089991-appb-000109
Figure PCTCN2019089991-appb-000109
音圈(103)受到的安培力：Ampere force to voice coil (103):
Figure PCTCN2019089991-appb-000110
Figure PCTCN2019089991-appb-000110
音圈(103)实际的加速度：Voice coil (103) actual acceleration:
Figure PCTCN2019089991-appb-000111
Figure PCTCN2019089991-appb-000111
Figure PCTCN2019089991-appb-000112
Figure PCTCN2019089991-appb-000112
音圈(103)实际的速度为：The actual speed of the voice coil (103) is:
Figure PCTCN2019089991-appb-000113
Figure PCTCN2019089991-appb-000113
Figure PCTCN2019089991-appb-000114
Figure PCTCN2019089991-appb-000114
所以音圈(103)的振动方程[即振膜(102)的振动方程，因为振膜(102)和音圈(3)通过定心支片(104)是连接在一起的]为：So the vibration equation of the voice coil (103) [that is, the vibration equation of the diaphragm (102), because the diaphragm (102) and the voice coil (3) are connected together through the centering support (104)]] is:
Figure PCTCN2019089991-appb-000115
Figure PCTCN2019089991-appb-000115
Figure PCTCN2019089991-appb-000116
Figure PCTCN2019089991-appb-000116
Figure PCTCN2019089991-appb-000117
Figure PCTCN2019089991-appb-000117
(13)式中
Figure PCTCN2019089991-appb-000118
与
Figure PCTCN2019089991-appb-000119
两项是所述动圈式扬声器还原出的声音信息，其它项为噪声，比较(7)式和(13)式中的①与
Figure PCTCN2019089991-appb-000120
②与
Figure PCTCN2019089991-appb-000121
可知：所述扬声器的幅频失真减小了，但还是没有完全消除。 (13) where
Figure PCTCN2019089991-appb-000118
versus
Figure PCTCN2019089991-appb-000119
Two items are the sound information restored by the moving coil speaker, and the other items are noise. Compare ① and (13) in (7) and (13).
Figure PCTCN2019089991-appb-000120
② with
Figure PCTCN2019089991-appb-000121
It can be seen that the amplitude-frequency distortion of the speaker is reduced, but it is still not completely eliminated.
若将输入音频信号u(t)进行三阶微分运算后再加到所述扬声器的音圈上会如何？What if the input audio signal u (t) is subjected to a third-order differential operation and then added to the voice coil of the speaker?
对u(t)的二阶导数
Figure PCTCN2019089991-appb-000122
进行求导，得到： Second derivative of u (t)
Figure PCTCN2019089991-appb-000122
Differing, we get:
Figure PCTCN2019089991-appb-000123
在t＝0时刻将u″′(t)加到音圈(103)上，则音圈(103)中的稳态电流(含有输入音频信号的信息)为：
Figure PCTCN2019089991-appb-000123
At time t = 0, u ′ ′ (t) is added to the voice coil (103), then the steady-state current (containing the information of the input audio signal) in the voice coil (103) is
Figure PCTCN2019089991-appb-000124
Figure PCTCN2019089991-appb-000124
                                          (此式暂不考虑音圈运动产生的电动势Blv)The electromotive force Blv generated by the motion of the voice coil is not considered in this formula.
音圈(103)中由于流经稳态电流i 3使其受到的安培力： Amperage in voice coil (103) due to the steady-state current i 3 :
Figure PCTCN2019089991-appb-000125
Figure PCTCN2019089991-appb-000125
音圈(103)的加速度：
Figure PCTCN2019089991-appb-000126
The acceleration of the voice coil (103):
Figure PCTCN2019089991-appb-000126
音圈(103)的速度：
Figure PCTCN2019089991-appb-000127
Speed of Voice Coil (103):
Figure PCTCN2019089991-appb-000127
音圈(103)由于切割磁感应线而产生的反电动势：The back electromotive force of the voice coil (103) due to the cutting of the magnetic induction wire:
Figure PCTCN2019089991-appb-000128
Figure PCTCN2019089991-appb-000128
考虑到反电动势E 反，音圈(103)中实际电流的稳态部分(含有输入音频信号的信息)为： Considering the back EMF E back , the steady state part of the actual current in the voice coil (103) (containing the information of the input audio signal) is:
Figure PCTCN2019089991-appb-000129
Figure PCTCN2019089991-appb-000129
音圈(103)受到的安培力：Ampere force to voice coil (103):
Figure PCTCN2019089991-appb-000130
Figure PCTCN2019089991-appb-000130
Figure PCTCN2019089991-appb-000131
Figure PCTCN2019089991-appb-000131
音圈(103)实际的加速度：Voice coil (103) actual acceleration:
Figure PCTCN2019089991-appb-000132
Figure PCTCN2019089991-appb-000132
音圈(103)实际的速度为：The actual speed of the voice coil (103) is:
Figure PCTCN2019089991-appb-000133
Figure PCTCN2019089991-appb-000133
Figure PCTCN2019089991-appb-000134
Figure PCTCN2019089991-appb-000134
所以音圈(103)的振动方程[即振膜(102)的振动方程，因为振膜(102)和音圈(103)通过定心支片(104)是连接在一起的]为：So the vibration equation of the voice coil (103) [that is, the vibration equation of the diaphragm (102), because the diaphragm (102) and the voice coil (103) are connected together through the centering support (104)]] is:
Figure PCTCN2019089991-appb-000135
Figure PCTCN2019089991-appb-000135
Figure PCTCN2019089991-appb-000136
Figure PCTCN2019089991-appb-000136
Figure PCTCN2019089991-appb-000137
Figure PCTCN2019089991-appb-000137
(14)式中
Figure PCTCN2019089991-appb-000138
与
Figure PCTCN2019089991-appb-000139
两项是所述动圈式扬声器还原出的声音信息，其它项是噪声，比较(7)式和(14)式 中的①与
Figure PCTCN2019089991-appb-000140
②与
Figure PCTCN2019089991-appb-000141
可知：所述扬声器的幅频失真进一步减小了；另外比较(13)式和(14)式中的
Figure PCTCN2019089991-appb-000142
与
Figure PCTCN2019089991-appb-000143
与
Figure PCTCN2019089991-appb-000144
的幅度，发现对输入音频信号进行三阶微分运算比进行二阶微分运算后再加到音圈上，减小扬声器幅频失真的效果更好。 (14) where
Figure PCTCN2019089991-appb-000138
versus
Figure PCTCN2019089991-appb-000139
Two items are sound information restored by the moving coil speaker, and the other items are noise. Compare ① and (14) in (7) and (14).
Figure PCTCN2019089991-appb-000140
② with
Figure PCTCN2019089991-appb-000141
It can be seen that the amplitude-frequency distortion of the speaker is further reduced; in addition, the
Figure PCTCN2019089991-appb-000142
versus
Figure PCTCN2019089991-appb-000143
versus
Figure PCTCN2019089991-appb-000144
It is found that performing a third-order differential operation on the input audio signal is better than performing a second-order differential operation and then adding it to the voice coil to reduce the speaker's amplitude-frequency distortion.
由以上讨论可知：对于动圈式扬声器(由磁场力驱动)，将输入音频信号进行一阶、二阶或三阶微分运算后再加在所述扬声器的音圈上，都可以减小扬声器的幅频失真，但不能完全消除。From the above discussion, it can be known that, for a dynamic coil speaker (driven by magnetic field force), the input audio signal is subjected to a first-order, second-order, or third-order differential operation and then added to the voice coil of the speaker, which can reduce the speaker's Amplitude-frequency distortion, but it cannot be completely eliminated.
若将输入音频信号u(t)进行四阶微分运算后再在所述扬声器的到音圈上会如何？What if the input audio signal u (t) is subjected to a fourth-order differential operation before reaching the voice coil of the speaker?
将
Figure PCTCN2019089991-appb-000145
进行求导，得： will
Figure PCTCN2019089991-appb-000145
Derivative:
Figure PCTCN2019089991-appb-000146
在t＝0时刻将u (4)(t)加到音圈(103)上，则音圈(103)中的稳态电流(含有输入音频信号的信息)为：
Figure PCTCN2019089991-appb-000146
Add u (4) (t) to the voice coil (103) at time t = 0, then the steady state current (containing the information of the input audio signal) in the voice coil (103) is:
Figure PCTCN2019089991-appb-000147
Figure PCTCN2019089991-appb-000147
                                        (此式暂不考虑音圈运动产生的电动势Blv)The electromotive force Blv caused by the motion of the voice coil is not considered in this formula.
音圈(103)中由于流经稳态电流i 4使其受到的安培力： Amperage in voice coil (103) due to the steady-state current i 4 :
Figure PCTCN2019089991-appb-000148
Figure PCTCN2019089991-appb-000148
音圈(103)的加速度：
Figure PCTCN2019089991-appb-000149
The acceleration of the voice coil (103):
Figure PCTCN2019089991-appb-000149
音圈(103)的速度：
Figure PCTCN2019089991-appb-000150
音圈(103)由于切割磁感应线而产生的反电动势： Speed of Voice Coil (103):
Figure PCTCN2019089991-appb-000150
The back electromotive force of the voice coil (103) due to the cutting of the magnetic induction wire:
Figure PCTCN2019089991-appb-000151
Figure PCTCN2019089991-appb-000151
考虑到反电动势E 反，音圈(103)中实际电流的稳态部分(含有输入音频信号的信息)为： Considering the back EMF E back , the steady state part of the actual current in the voice coil (103) (containing the information of the input audio signal) is:
Figure PCTCN2019089991-appb-000152
Figure PCTCN2019089991-appb-000152
音圈(103)受到的安培力：Ampere force to voice coil (103):
Figure PCTCN2019089991-appb-000153
Figure PCTCN2019089991-appb-000153
音圈(103)实际的加速度：Voice coil (103) actual acceleration:
Figure PCTCN2019089991-appb-000154
Figure PCTCN2019089991-appb-000154
音圈(103)实际的速度为：The actual speed of the voice coil (103) is:
Figure PCTCN2019089991-appb-000155
Figure PCTCN2019089991-appb-000155
Figure PCTCN2019089991-appb-000156
Figure PCTCN2019089991-appb-000156
所以音圈(103)的振动方程[即振膜(102)的振动方程，因为振膜(102)和音圈(103)通过定心支片(104)是连接在一起的]为：So the vibration equation of the voice coil (103) [that is, the vibration equation of the diaphragm (102), because the diaphragm (102) and the voice coil (103) are connected together through the centering support (104)]] is:
Figure PCTCN2019089991-appb-000157
Figure PCTCN2019089991-appb-000157
Figure PCTCN2019089991-appb-000158
Figure PCTCN2019089991-appb-000158
Figure PCTCN2019089991-appb-000159
Figure PCTCN2019089991-appb-000159
(15)式中
Figure PCTCN2019089991-appb-000160
与
Figure PCTCN2019089991-appb-000161
两项是所述动圈式扬声器还原出的声音信息，其它项是噪声，比较(7)式和(15)式中的①与
Figure PCTCN2019089991-appb-000162
②与
Figure PCTCN2019089991-appb-000163
可知：所述扬声器的幅频失真减小了，所以，对输入音频信号u(t)进行四阶微分运算后再加在音圈上也可以减小扬声器的幅频失真。 (15) where
Figure PCTCN2019089991-appb-000160
versus
Figure PCTCN2019089991-appb-000161
Two terms are the sound information restored by the moving coil speaker, and the other terms are noise. Compare ① and (15) in (7) and (15).
Figure PCTCN2019089991-appb-000162
② with
Figure PCTCN2019089991-appb-000163
It can be known that the amplitude-frequency distortion of the speaker is reduced. Therefore, the fourth-order differential operation on the input audio signal u (t) and adding it to the voice coil can also reduce the amplitude-frequency distortion of the speaker.
若对输入音频信号u(t)进行五阶微分运算后再加到所述动圈式扬声器的音圈上有没有效果？Is it effective to add a fifth-order differential operation to the input audio signal u (t) to the voice coil of the dynamic coil speaker?
对
Figure PCTCN2019089991-appb-000164
求导，有： Correct
Figure PCTCN2019089991-appb-000164
For guidance, there are:
Figure PCTCN2019089991-appb-000165
Figure PCTCN2019089991-appb-000165
在t＝0时刻将u (5)(t)加到音圈(103)上，则音圈(103)中的稳态电流(含有输入音频信号的信息)为： When u (5) (t) is added to the voice coil (103) at time t = 0, the steady state current (containing the information of the input audio signal) in the voice coil (103) is:
Figure PCTCN2019089991-appb-000166
Figure PCTCN2019089991-appb-000166
                                          (此式暂不考虑音圈运动产生的电动势Blv)The electromotive force Blv generated by the motion of the voice coil is not considered in this formula.
音圈(103)中由于流经稳态电流i 5使其受到的安培力： Amperage in voice coil (103) due to the steady-state current i 5 :
Figure PCTCN2019089991-appb-000167
Figure PCTCN2019089991-appb-000167
音圈(103)的加速度：
Figure PCTCN2019089991-appb-000168
The acceleration of the voice coil (103):
Figure PCTCN2019089991-appb-000168
音圈(103)的速度：
Figure PCTCN2019089991-appb-000169
Speed of Voice Coil (103):
Figure PCTCN2019089991-appb-000169
音圈(103)由于切割磁感应线而产生的反电动势Voice coil (103) Back-EMF due to cutting magnetic induction wire
Figure PCTCN2019089991-appb-000170
Figure PCTCN2019089991-appb-000170
考虑到反电动势E 反，音圈(103)中实际电流的稳态部分(含有输入音频信号的信息)为： Considering the back EMF E back , the steady state part of the actual current in the voice coil (103) (containing the information of the input audio signal) is:
Figure PCTCN2019089991-appb-000171
Figure PCTCN2019089991-appb-000171
音圈(103)受到的安培力：Ampere force to voice coil (103):
Figure PCTCN2019089991-appb-000172
Figure PCTCN2019089991-appb-000172
音圈(103)实际的加速度：Voice coil (103) actual acceleration:
Figure PCTCN2019089991-appb-000173
Figure PCTCN2019089991-appb-000173
音圈(103)实际的速度为：The actual speed of the voice coil (103) is:
Figure PCTCN2019089991-appb-000174
Figure PCTCN2019089991-appb-000174
Figure PCTCN2019089991-appb-000175
Figure PCTCN2019089991-appb-000175
Figure PCTCN2019089991-appb-000176
Figure PCTCN2019089991-appb-000176
所以音圈(103)的振动方程[即振膜(102)的振动方程，因为振膜(102)和音圈(103)通过定心支片(104)是连接在一起的]为：So the vibration equation of the voice coil (103) [that is, the vibration equation of the diaphragm (102), because the diaphragm (102) and the voice coil (103) are connected together through the centering support (104)]] is:
Figure PCTCN2019089991-appb-000177
Figure PCTCN2019089991-appb-000177
Figure PCTCN2019089991-appb-000178
Figure PCTCN2019089991-appb-000178
Figure PCTCN2019089991-appb-000179
Figure PCTCN2019089991-appb-000179
(16)式中
Figure PCTCN2019089991-appb-000180
与
Figure PCTCN2019089991-appb-000181
两项是所述扬声器还原出的声音信息，其它项为噪声。比较(7)式和(16)式可以发现所述扬声器的幅频失真减小了，所以将输入音频信号先进行五阶微分运算后再加在音圈上也可以减小动圈式扬声器的幅频失真。 (16) where
Figure PCTCN2019089991-appb-000180
versus
Figure PCTCN2019089991-appb-000181
Two items are sound information restored by the speaker, and the other items are noise. Comparing (7) and (16), it can be found that the amplitude-frequency distortion of the speaker is reduced, so the fifth-order differential operation of the input audio signal and then adding it to the voice coil can also reduce the dynamic speaker's Amplitude-frequency distortion.
比较(7)、(12)、(13)、(14)、(15)、(16)各式可以发现：动圈式扬声器输出中包含相位角为
Figure PCTCN2019089991-appb-000182
和
Figure PCTCN2019089991-appb-000183
两项的声音信息，而且对输入信号进行不同阶次的微分运算，对这两项减小幅度失真的效果也不同。 Comparing (7), (12), (13), (14), (15), (16), you can find that the phase angle of the dynamic speaker output is
Figure PCTCN2019089991-appb-000182
with
Figure PCTCN2019089991-appb-000183
Two items of sound information, and different order differential operations on the input signal, the effect of reducing amplitude distortion on these two items is also different.
综上所述，对于静电扬声器，将输入音频信号进行一阶、二阶或三阶微分运算后再加在所述扬声器的固定极板上，都可以减小所述扬声器的幅频失真，其中进行二阶微分运算可以完全消除所述扬声器的幅频失真；对于动圈式扬声器，将输入音频信号进行一阶、二阶、三阶、四阶或五阶微分运算后再加在所述扬声器的音圈上，都可以减小所述扬声器的幅频失真，但不能完全消除，其中进行三阶微分运算的情况效果较好。In summary, for an electrostatic speaker, the first-, second-, or third-order differential operation of the input audio signal and then adding it to the fixed plate of the speaker can reduce the amplitude-frequency distortion of the speaker. Performing a second-order differential operation can completely eliminate the amplitude-frequency distortion of the speaker; for a dynamic coil speaker, the input audio signal is subjected to a first-order, second-order, third-order, fourth-order, or fifth-order differential operation and then added to the speaker. In the voice coil, the amplitude-frequency distortion of the speaker can be reduced, but it cannot be completely eliminated, and the third-order differential operation is effective.
由静电扬声器(由静电力驱动)和动圈式扬声器(由磁场力驱动)对输入音频信号的处理过程可以发现：积分运算和微分运算都会造成所述信号的幅频失真，效果正好相反(即微分运算使输入信号幅度变为 原来的nω倍，积分运算使输入信号幅度变为原来的
Figure PCTCN2019089991-appb-000184
)，且都与所述输入信号的频率有关，如静电扬声器两固定极板(303)间电压的增大过程(积分运算)、振膜(304)运动的加速过程(积分运算)、动圈式扬声器中音圈(103)电流的增大过程(积分运算)、音圈(103)运动的加速过程(积分运算)等，可见，在静电扬声器和动圈式扬声器中都存在积分运算，且这种积分运算是必不可少的，是其工作原理所必需的。因微分是积分的逆运算，所以对所述输入音频信号先进行适当的微分运算(即对积分运算产生的幅频失真进行预补偿，用“逆失真”补偿失真，因为一旦失真最后在振膜的振动中表现出来就无法补救了)再加在扬声器上就可以矫正积分运算产生的幅频失真。所以本发明技术方案的实质是：由于扬声器对音频信号进行积分运算会产生幅频失真(这种积分运算是必需的)，故需对音频信号进行适当的微分运算(即对输入音频信号进行“预补偿”)以矫正积分运算产生的幅频失真。另外，这种微分运算既可以通过硬件实现，也可以通过软件实现。 The processing of the input audio signal by the electrostatic speaker (driven by electrostatic force) and the dynamic coil speaker (driven by magnetic field force) can be found: both the integral operation and the differential operation will cause the amplitude-frequency distortion of the signal, and the effect is just the opposite (i.e. Differential operation makes the input signal amplitude become the original nω times, and integral operation makes the input signal amplitude become the original
Figure PCTCN2019089991-appb-000184
), And both are related to the frequency of the input signal, such as the process of increasing the voltage (integral operation) between the two fixed electrode plates (303) of the electrostatic speaker, the acceleration process of the diaphragm (304) (integral operation), and the moving coil. In the speaker, the current increase of the voice coil (103) (integral operation), the acceleration of the movement of the voice coil (103) (integral operation), etc., it can be seen that there are integral operations in both electrostatic speakers and dynamic coil speakers, and This integral operation is essential and necessary for its working principle. Because differentiation is the inverse operation of integration, the input audio signal is first subjected to an appropriate differentiation operation (that is, pre-compensation for the amplitude-frequency distortion generated by the integration operation, and the "inverse distortion" is used to compensate the distortion, because once the distortion is finally in the diaphragm (It ca n’t be remedied by the vibrations), and it can be used to correct the amplitude-frequency distortion generated by the integral operation. Therefore, the essence of the technical solution of the present invention is that since the speaker performs integral operation on the audio signal, it will produce amplitude-frequency distortion (this integral operation is necessary), so it is necessary to perform appropriate differential operation on the audio signal (that is, to perform " Pre-compensation ") to correct amplitude-frequency distortion caused by integration operations. In addition, this kind of differential operation can be realized by hardware or software.
由于对输入音频信号的微分运算与对所述信号的其他处理过程(如放大、滤波等)是相互独立的，所以无论是由静电扬声器(由静电力驱动)还是动圈式扬声器(由磁场力驱动)所组成的音响系统，具体对输入信号的“微分运算”置于音响系统中的哪个环节进行，并不会影响其减小扬声器失真的最终效果。如对静电扬声器，可以把所述的“微分运算”置于音频变压器至两固定极板间的信号传输路径上进行，也可以将其集成在音频变压器内部实现。Because the differential calculation of the input audio signal and other processing processes (such as amplification, filtering, etc.) of the signal are independent of each other, whether it is an electrostatic speaker (driven by electrostatic force) or a dynamic coil speaker (driven by magnetic field force) The sound system formed by the driver) specifically determines where the "differential operation" of the input signal is placed in the sound system, and does not affect its final effect of reducing speaker distortion. For an electrostatic speaker, the “differential operation” can be performed on the signal transmission path from the audio transformer to two fixed plates, or it can be integrated inside the audio transformer to implement.
音响系统中的音频信号放大器一般都是多级放大的，这种情况可以将对输入音频信号的微分运算中的一阶或某几阶集成于所述音频信号放大器的某一级或某几级中进行，都不影响“微分运算”减小信号幅频失真的最终效果。Audio signal amplifiers in sound systems are generally multi-stage amplified. In this case, one or more stages in the differential operation of the input audio signal can be integrated into one or more stages of the audio signal amplifier. It does not affect the final effect of the "differential operation" to reduce the amplitude-frequency distortion of the signal.
比较静电扬声器和动圈式扬声器，通过对输入音频信号进行适当“阶次”的微分运算可以减小扬声器的幅频失真，但效果不同：对静电扬声器理论上可以完全消除幅频失真；对动圈式扬声器虽然能减小幅频失真，但不能完全消除。这是因为动圈式扬声器对音频信号的处理过程更为复杂：音圈电感会对信号造成失真、音圈运动切割磁感应线产生反电动势也会对信号造成失真。可以认为：所有由磁场力驱动的扬声器，其幅频失真都较严重，因为只要导体与磁场有相对运动(有切割磁感应线)，就会产生反电动势(此电动势与信号频率有关)，从而产生幅频失真。相对而言，静电扬声器不仅仅是结构简单，关键是没有磁场，由静电力驱动，也就没有反电动势的问题，所以幅频失真更小。可见，静电扬声器从工作原理上相对于动圈式扬声器(由磁场力驱动)就具有先天的优势，所以在高保真音响系统中，采用静电扬声器效果更好。Comparing electrostatic speakers and dynamic coil speakers, you can reduce the amplitude-frequency distortion of the speaker by performing appropriate “order” differentiation on the input audio signal, but the effect is different: theoretically, the electrostatic speaker can completely eliminate the amplitude-frequency distortion; Although coil speakers can reduce amplitude-frequency distortion, they cannot be completely eliminated. This is because the processing of audio signals by dynamic coil speakers is more complicated: the voice coil inductance will cause distortion of the signal, and the back electromotive force generated by the magnetic coil of the voice coil motion will also distort the signal. It can be considered that all speakers driven by the magnetic field force have serious amplitude-frequency distortion, because as long as the conductor and the magnetic field have relative movement (there are cutting magnetic induction lines), back-EMF will be generated (this electromotive force is related to the signal frequency), which will produce Amplitude-frequency distortion. Relatively speaking, electrostatic speakers are not only simple in structure, the key is that there is no magnetic field, which is driven by electrostatic force, and there is no problem of back electromotive force, so the amplitude frequency distortion is smaller. It can be seen that electrostatic speakers have inherent advantages over moving coil speakers (driven by magnetic field forces) in terms of working principles, so in high-fidelity audio systems, it is better to use electrostatic speakers.
对于动圈式扬声器，根据需要其振膜可以做成不同的形状，形成如：锥盆扬声器、球顶形扬声器、号筒式扬声器、平板式扬声器等，这里的平板式扬声器不同于常见的、也是平板的静电扬声器，它只是把振膜做成平板状，然后和音圈固定在一起，当音圈振动时带动平板振膜振动而产生声音，还是属于动圈式扬声器。另外还有一种带式扬声器，它是将一带状的金属箔(通常是铝箔)放在磁场中，当其中通过音频电 流时，便在磁场力的作用下振动产生声音，其实这种扬声器和动圈式扬声器没有本质的区别，这里的带状金属铝箔等效于“音圈加振膜”，相当于把音圈导线伸展开来变成带状，同时充当振膜，电磁性能和音圈类似，都存在电阻和电感，只是它的电阻和电感比较小，故其相位失真和幅度失真也比较小，但它的效率较低。For dynamic coil speakers, the diaphragm can be made into different shapes according to requirements, such as cone cone speakers, dome speakers, horn speakers, flat speakers, etc. The flat speakers here are different from the common ones. The flat electrostatic speaker only makes the diaphragm into a flat shape, and then fixes it with the voice coil. When the voice coil vibrates, it drives the flat diaphragm to vibrate to generate sound, which still belongs to a dynamic coil speaker. In addition, there is a band speaker. It puts a band-shaped metal foil (usually aluminum foil) in a magnetic field. When audio current passes through it, it vibrates under the force of the magnetic field to generate sound. In fact, this speaker and There is no essential difference between dynamic coil speakers. The band-shaped metal aluminum foil here is equivalent to a "voice coil plus diaphragm", which is equivalent to stretching the voice coil wire into a band shape, and it also acts as a diaphragm. Its electromagnetic performance is similar to that of a voice coil. Both resistance and inductance exist, but its resistance and inductance are relatively small, so its phase distortion and amplitude distortion are relatively small, but its efficiency is low.
所以锥盆扬声器、球顶形扬声器、号筒式扬声器、平板式扬声器和带式扬声器，虽然它们外形各异，但工作原理相同，都是利用磁场力驱动：当导体中有音频电流通过时受磁场力作用振动而产生声音，都属于动圈式扬声器，所以本发明的技术方案对这些扬声器都是适用的。So cone speakers, dome speakers, horn speakers, flat speakers, and ribbon speakers, although they have different shapes, work the same way, and are driven by magnetic fields: when an audio current passes through a conductor, it is subjected to a magnetic field The sound generated by force and vibration belongs to dynamic coil speakers, so the technical solution of the present invention is applicable to these speakers.
附图说明：Brief description of the drawings:
[各附图编号规则：图序号“+”元件序号，从右数两位为元件序号，相同的编号表示相同的元器件][Numbering rules of each drawing: drawing number "+" component number, two digits from the right are component numbers, the same number represents the same component]
图1是现有技术中动圈式扬声器的结构示意图。FIG. 1 is a schematic structural diagram of a dynamic coil speaker in the prior art.
图2是现有技术中动圈式扬声器的原理图。FIG. 2 is a schematic diagram of a dynamic coil speaker in the prior art.
图3是现有技术中静电扬声器的原理图。FIG. 3 is a schematic diagram of an electrostatic speaker in the prior art.
图4是实施例1的示意图。FIG. 4 is a schematic diagram of the first embodiment.
图5是实施例2的示意图。FIG. 5 is a schematic diagram of Embodiment 2. FIG.
图6是实施例3的示意图。FIG. 6 is a schematic diagram of the third embodiment.
图7是实施例4的示意图。FIG. 7 is a schematic diagram of the fourth embodiment.
图8是实施例5的示意图。FIG. 8 is a schematic diagram of the fifth embodiment.
图9是实施例6的示意图。FIG. 9 is a schematic diagram of Embodiment 6. FIG.
图10是实施例7的示意图。FIG. 10 is a schematic diagram of the seventh embodiment.
图11是实施例8的示意图。FIG. 11 is a schematic diagram of the eighth embodiment.
图12是实施例9的示意图。FIG. 12 is a schematic diagram of Embodiment 9. FIG.
图13是实施例10的示意图。FIG. 13 is a schematic diagram of the tenth embodiment.
图14是实施例11的示意图。FIG. 14 is a schematic diagram of the eleventh embodiment.
图15是实施例12的示意图。FIG. 15 is a schematic diagram of Embodiment 12.
图16是实施例13的示意图。FIG. 16 is a schematic diagram of the thirteenth embodiment.
图17是实施例14的示意图。FIG. 17 is a schematic diagram of the fourteenth embodiment.
图18是实施例15的示意图。FIG. 18 is a schematic diagram of Embodiment 15.
图19是实施例16的示意图。FIG. 19 is a schematic diagram of Embodiment 16.
图20是实施例17的示意图。FIG. 20 is a schematic diagram of Embodiment 17.
图21是实施例18的示意图。FIG. 21 is a schematic diagram of Embodiment 18.
图22是实施例19的示意图。FIG. 22 is a schematic diagram of Embodiment 19.
图23是实施例20的示意图。FIG. 23 is a schematic diagram of Embodiment 20.
图24是实施例21的示意图。FIG. 24 is a schematic diagram of Embodiment 21.
图25是实施例22的示意图。FIG. 25 is a schematic diagram of Embodiment 22.
图26是实施例23的示意图。FIG. 26 is a schematic diagram of Embodiment 23.
图27是实施例24的示意图。FIG. 27 is a schematic diagram of Embodiment 24. FIG.
图28是实施例25的示意图。FIG. 28 is a schematic diagram of Embodiment 25. FIG.
图29是实施例26的示意图。FIG. 29 is a schematic diagram of Embodiment 26.
图30是实施例27的示意图。FIG. 30 is a schematic diagram of Embodiment 27. FIG.
具体实施方式：为了使本领域技术人员更易于了解本发明的技术方案，下面通过具体实施例进一步说明：DETAILED DESCRIPTION: In order to make it easier for those skilled in the art to understand the technical solution of the present invention, the following further describes through specific embodiments:
实施例1：本发明提供的一种静电扬声器，如图4，包括：音频变压器(301)、一阶微分运算模块(401)、高压直流电源(302)、两个固定极板(303)和振膜(304)；所述音频变压器(301)对输入音频信号进行升压，所述高压直流电源(302)给所述振膜(304)提供净电荷，所述振膜(304)处于所述的两个固定极板(303)之间，所述一阶微分运算模块(401)具有对信号进行一阶微分运算的功能，所述一阶微分运算模块(401)的一阶微分运算功能可以用硬件或软件实现；输入音频信号经所述音频变压器(301)升压后再经所述一阶微分运算模块(401)进行一阶微分运算，所述一阶运算模块(401)输出的信号加在所述两个固定极板(303)上从而在所述两个固定极板(303)之间形成变化的电场，所述振膜(304)受所述变化的电场施加的电场力作用而振动产生声音。Embodiment 1: An electrostatic speaker provided by the present invention, as shown in FIG. 4, includes: an audio transformer (301), a first-order differential operation module (401), a high-voltage DC power supply (302), two fixed electrode plates (303), and Diaphragm (304); the audio transformer (301) boosts the input audio signal, the high-voltage DC power supply (302) provides a net charge to the diaphragm (304), and the diaphragm (304) Between the two fixed plates (303), the first order differential operation module (401) has a function of performing a first order differential operation on a signal, and the first order differential operation function of the first order differential operation module (401) It can be implemented by hardware or software; after the input audio signal is boosted by the audio transformer (301), first-order differential operation is performed by the first-order differential operation module (401). A signal is added to the two fixed plates (303) to form a changing electric field between the two fixed plates (303), and the diaphragm (304) is subjected to an electric field force applied by the changed electric fields Vibration produces sound.
本实施例中的一阶微分运算模块(401)也可以与所述音频变压器(301)集成在一起，使所述一阶微分运算模块(401)的一阶微分运算功能在所述音频变压器(301)内部实现。The first order differential operation module (401) in this embodiment may also be integrated with the audio transformer (301), so that the first order differential operation function of the first order differential operation module (401) is provided in the audio transformer ( 301) Internal implementation.
实施例2：本发明提供的一种静电扬声器，如图5，包括：音频变压器(301)、二阶微分运算模块(501)、高压直流电源(302)、两个固定极板(303)和振膜(304)；所述高压直流电源(302)给所述振膜(304)提供净电荷(也属于静电荷)，所述振膜(304)处于所述的两个固定极板(303)之间，所述二阶微分运算模块(501)具有对信号进行二阶微分运算的功能，所述二阶微分运算模块(501)的二阶微分运算功能可以用硬件或软件实现，输入音频信号经所述音频变压器(301)升压后再经所述二阶微分运算模块(501)进行二阶微分运算，所述二阶微分运算模块(501)输出的信号加在所述两个固定极板(303)上从而在所述两个固定极板(303)之间形成变化的电场，所述振膜(304)受所述变化的电场施加的电场力作用而振动产生声音。Embodiment 2: An electrostatic speaker provided by the present invention, as shown in FIG. 5, includes: an audio transformer (301), a second-order differential operation module (501), a high-voltage DC power supply (302), two fixed electrode plates (303), and Diaphragm (304); the high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304), and the diaphragm (304) is located on the two fixed plates (303) ), The second-order differential operation module (501) has a function of performing second-order differential operation on a signal, and the second-order differential operation function of the second-order differential operation module (501) may be implemented by hardware or software, and input audio After the signal is boosted by the audio transformer (301), a second order differential operation is performed by the second order differential operation module (501), and the signals output by the second order differential operation module (501) are added to the two fixed A variable electric field is formed on the electrode plate (303) between the two fixed electrode plates (303), and the diaphragm (304) is vibrated to generate sound by the electric field force applied by the changed electric field.
本实施例中的二阶微分运算模块(501)也可以与所述音频变压器(301)集成在一起，使所述二阶微分运算模块(501)的二阶微分运算功能在所述音频变压器(301)内部实现。The second-order differential operation module (501) in this embodiment may also be integrated with the audio transformer (301), so that the second-order differential operation function of the second-order differential operation module (501) is provided in the audio transformer ( 301) Internal implementation.
实施例3：本发明提供的一种静电扬声器，如图6，包括：音频变压器(301)、三阶微分运算模块(601)、 高压直流电源(302)、两个固定极板(303)和振膜(304)；所述高压直流电源(302)给所述振膜(304)提供净电荷(也属于静电荷)，所述振膜(304)处于所述的两个固定极板(303)之间，所述三阶微分运算模块(601)具有对信号进行三阶微分运算的功能，所述三阶微分运算模块(601)的三阶微分运算功能可以用硬件或软件实现，输入音频信号经所述音频变压器(301)升压后再经所述三阶微分运算模块(601)进行三阶微分运算，所述三阶微分运算模块(601)输出的信号加在所述两个固定极板(303)上从而在所述两个固定极板(303)之间形成变化的电场，所述振膜(304)受所述变化的电场施加的电场力作用而振动产生声音。Embodiment 3: An electrostatic speaker provided by the present invention, as shown in FIG. 6, includes: an audio transformer (301), a third-order differential operation module (601), a high-voltage DC power supply (302), two fixed electrode plates (303), and Diaphragm (304); the high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304), and the diaphragm (304) is located on the two fixed plates (303) ), The third-order differential operation module (601) has a function of performing a third-order differential operation on a signal, and the third-order differential operation function of the third-order differential operation module (601) may be implemented by hardware or software, and input audio After the signal is boosted by the audio transformer (301), a third-order differential operation is performed by the third-order differential operation module (601), and the signals output by the third-order differential operation module (601) are added to the two fixed A variable electric field is formed on the electrode plate (303) between the two fixed electrode plates (303), and the diaphragm (304) is vibrated to generate sound by the electric field force applied by the changed electric field.
本实施例中的三阶微分运算模块(601)也可以与所述音频变压器(301)集成在一起，使所述三阶微分运算模块(601)的三阶微分运算功能在所述音频变压器(301)内部实现。The third-order differential operation module (601) in this embodiment may also be integrated with the audio transformer (301), so that the third-order differential operation function of the third-order differential operation module (601) is implemented in the audio transformer ( 301) Internal implementation.
实施例4：本发明提供的一种静电扬声器，如图7，包括：一阶微分运算模块(401)、音频变压器(301)、高压直流电源(302)、两个固定极板(303)和振膜(304)；所述高压直流电源(302)给所述振膜(304)提供净电荷(也属于静电荷)，所述振膜(304)处于所述的两个固定极板(303)之间，所述一阶微分运算模块(401)具有对信号进行一阶微分运算的功能，所述一阶微分运算模块(401)的一阶微分运算功能可以用硬件或软件实现；输入音频信号经所述一阶微分运算模块(401)进行一阶微分运算后再经所述音频变压器(301)升压，所述音频变压器(301)输出的信号加在所述两个固定极板(303)上从而在所述两个固定极板(303)之间形成变化的电场，所述振膜(304)受所述变化的电场施加的电场力作用而振动产生声音。Embodiment 4: As shown in FIG. 7, an electrostatic speaker provided by the present invention includes: a first-order differential operation module (401), an audio transformer (301), a high-voltage DC power supply (302), two fixed electrode plates (303), and Diaphragm (304); the high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304), and the diaphragm (304) is located on the two fixed plates (303) ), The first-order differential operation module (401) has a function of performing a first-order differential operation on a signal, and the first-order differential operation function of the first-order differential operation module (401) may be implemented by hardware or software; input audio The signal is subjected to a first-order differential operation by the first-order differential operation module (401) and then boosted by the audio transformer (301). The signals output by the audio transformer (301) are added to the two fixed plates ( 303) so that a changing electric field is formed between the two fixed electrode plates (303), and the diaphragm (304) is vibrated to generate sound by the electric field force applied by the changing electric field.
本实施例中的一阶微分运算模块(401)也可以与所述音频变压器(301)集成在一起，使所述一阶微分运算模块(401)的一阶微分运算功能在所述音频变压器(301)内部实现。The first order differential operation module (401) in this embodiment may also be integrated with the audio transformer (301), so that the first order differential operation function of the first order differential operation module (401) is provided in the audio transformer ( 301) Internal implementation.
实施例5：本发明提供的一种静电扬声器，如图8，包括：两个一阶微分运算模块(401)、音频变压器(301)、高压直流电源(302)、两个固定极板(303)和振膜(304)；所述高压直流电源(302)给所述振膜(304)提供净电荷(也属于静电荷)，所述振膜(304)处于所述的两个固定极板(303)之间，所述一阶微分运算模块(401)具有对信号进行一阶微分运算的功能，所述一阶微分运算模块(401)的一阶微分运算功能可以用硬件或软件实现；输入音频信号先经过所述的其中一个一阶微分运算模块(401)进行一阶微分运算后加在所述音频变压器(301)的信号输入端，所述音频变压器(301)输出的信号再经所述的另一个一阶微分运算模块(401)进行一阶微分运算后加在所述两个固定极板(303)上从而在所述两个固定极板(303)之间形成变化的电场，所述振膜(304)受所述变化的电场施加的电场力作用而振动产生声音。Embodiment 5: An electrostatic speaker provided by the present invention, as shown in FIG. 8, includes: two first-order differential operation modules (401), an audio transformer (301), a high-voltage DC power supply (302), and two fixed electrode plates (303 ) And diaphragm (304); the high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304), and the diaphragm (304) is located on the two fixed plates (303), the first order differential operation module (401) has a function of performing a first order differential operation on a signal, and the first order differential operation function of the first order differential operation module (401) may be implemented by hardware or software; The input audio signal is firstly subjected to a first order differential operation by one of the first order differential operation modules (401), and then added to the signal input terminal of the audio transformer (301), and the signal output by the audio transformer (301) is then passed through The other first-order differential operation module (401) performs a first-order differential operation and adds the two first-order differential plates (303) to form a changing electric field between the two fixed-pole plates (303). , The diaphragm (304) is vibrated to generate sound by the electric field force applied by the changed electric field sound.
本实施例中的两个一阶微分运算模块(401)或其中之一也可以与所述音频变压器(301)集成在一起，使所述一阶微分运算模块(401)的微分运算功能在所述音频变压器(301)内部实现。In this embodiment, one of the two first-order differential operation modules (401) or one of them can also be integrated with the audio transformer (301), so that the differential operation function of the first-order differential operation module (401) can be used in all places. The internal implementation of the audio transformer (301) is described.
实施例6：本发明提供的一种静电扬声器，如图9，包括：音频变压器(301)、高压直流电源(302)、二阶微分电路(901)、两个固定极板(303)和振膜(304)；所述二阶微分电路(901)具有对信号进行二阶微分运算的功能，所述二阶微分电路(901)集成在所述的其中一个固定极板(303)上，所述高压直流电源(302)给所述振膜(304)提供净电荷(也属于静电荷)，所述振膜(304)处于所述的两个固定极板(303)之间；输入音频信号先经过所述音频变压器(301)升压再经所述二阶微分电路(901)进行二阶微分运算后加在所述两个固定极板(303)上，从而在所述两个固定极板(303)之间形成变化的电场，所述振膜(304)受所述变化的电场施加的电场力作用而振动产生声音。Embodiment 6: An electrostatic speaker provided by the present invention, as shown in FIG. 9, includes: an audio transformer (301), a high-voltage DC power supply (302), a second-order differential circuit (901), two fixed pole plates (303), and a vibrator. Film (304); the second-order differential circuit (901) has a function of performing a second-order differential operation on a signal, and the second-order differential circuit (901) is integrated on one of the fixed plates (303), so The high-voltage DC power supply (302) provides a net charge (also a static charge) to the diaphragm (304), and the diaphragm (304) is located between the two fixed plates (303); an input audio signal First boosted by the audio transformer (301) and then performed second-order differential operation by the second-order differential circuit (901), and then added to the two fixed pole plates (303), so that the two fixed poles A changing electric field is formed between the plates (303), and the diaphragm (304) is vibrated to generate sound by the electric field force applied by the changing electric field.
实施例7：本发明提供的一种处理语音信息的装置，如图10，包括：一阶微分运算模块(401)、音频信号放大器和静电扬声器；所述一阶微分运算模块(401)具有对信号进行一阶微分运算的功能，所述一阶微分运算模块(401)的一阶微分运算功能可以用硬件或软件实现，输入音频信号经所述一阶微分运算模块(401)进行一阶微分运算后加在所述音频信号放大器的信号输入端，所述音频信号放大器输出的信号加在所述静电扬声器的信号输入端从而使所述静电扬声器产生声音；本实施例中的一阶微分运算模块(401)也可以集成在所述音频信号放大器内部实现。Embodiment 7: An apparatus for processing voice information provided by the present invention, as shown in FIG. 10, includes: a first-order differential operation module (401), an audio signal amplifier, and an electrostatic speaker; the first-order differential operation module (401) has A function of performing a first order differential operation on a signal. The first order differential operation function of the first order differential operation module (401) may be implemented by hardware or software. An input audio signal is first order differential performed by the first order differential operation module (401). The signal is added to the signal input terminal of the audio signal amplifier after the operation, and the signal output from the audio signal amplifier is added to the signal input terminal of the electrostatic speaker so that the electrostatic speaker generates sound; the first-order differential operation in this embodiment The module (401) may also be implemented inside the audio signal amplifier.
实施例8：本发明提供的一种一种处理语音信息的装置，如图11，包括：两个一阶微分运算模块(401)、音频信号放大器和静电扬声器；所述一阶微分运算模块(401)具有对信号进行一阶微分运算的功能，所述一阶微分运算模块(401)的一阶微分运算功能可以用硬件或软件实现，输入音频信号先经过所述的其中一个一阶微分运算模块(401)进行一阶微分运算后加在所述音频信号放大器的信号输入端，所述音频信号放大器输出的信号再经所述的另一个一阶微分运算模块(401)进行一阶微分运算后加在所述静电扬声器的信号输入端从而使所述静电扬声器产生声音；本实施例中的两个或其中一个一阶微分运算模块(401)也可以集成在所述音频信号放大器内部实现。Embodiment 8: A device for processing voice information provided by the present invention, as shown in FIG. 11, includes: two first-order differential operation modules (401), an audio signal amplifier, and an electrostatic speaker; the first-order differential operation module ( 401) has a function of performing a first order differential operation on a signal, and the first order differential operation function of the first order differential operation module (401) can be implemented by hardware or software, and the input audio signal first passes through one of the first order differential operations described above The module (401) performs a first-order differential operation and adds the signal to the signal input terminal of the audio signal amplifier. The signal output by the audio signal amplifier is further subjected to the first-order differential operation by the another first-order differential operation module (401). It is added to the signal input end of the electrostatic speaker so that the electrostatic speaker generates sound; two or one of the first-order differential operation modules (401) in this embodiment may also be integrated into the audio signal amplifier and implemented.
实施例9：本发明提供的一种处理语音信息的装置，如图12，包括：二阶微分运算模块(501)、音频信号放大器和静电扬声器；所述二阶微分运算模块(501)具有对信号进行二阶微分运算的功能，所述二阶微分运算模块(501)的二阶微分运算功能可以用硬件或软件实现，输入音频信号经所述二阶微分运算模块(501)进行二阶微分运算后在到所述音频信号放大器的信号输入端，所述音频信号放大器输出的信号加在所述静电扬声器的信号输入端从而使所述静电扬声器产生声音；本实施例中的二阶微分运算模块(501)也可以集成在所述音频信号放大器内部实现。Embodiment 9: A device for processing voice information provided by the present invention, as shown in FIG. 12, includes: a second-order differential operation module (501), an audio signal amplifier, and an electrostatic speaker; the second-order differential operation module (501) has The function of performing second order differential operation on signals. The second order differential operation function of the second order differential operation module (501) can be implemented by hardware or software. The input audio signal is second order differential performed by the second order differential operation module (501). After the calculation, the signal is input to the audio signal amplifier, and the signal output from the audio signal amplifier is added to the signal input of the electrostatic speaker so that the electrostatic speaker generates sound. The second-order differential operation in this embodiment The module (501) may also be implemented by being integrated inside the audio signal amplifier.
实施例10：本发明提供的一种处理语音信息的装置，如图13，包括：音频信号放大器、二阶微分运算模块(501)和静电扬声器；所述二阶微分运算模块(501)具有对信号进行二阶微分运算的功能，所述二阶微分运算模块(501)的二阶微分运算功能可以用硬件或软件实现，输入音频信号经所述音频信号放大器放大后加在所述二阶微分运算模块(501)的信号输入端，所述二阶微分运算模块(501)输出的信号 加在所述静电扬声器的信号输入端从而使所述静电扬声器产生声音；本实施例中的二阶微分运算模块(501)也可以集成在所述音频信号放大器内部实现。Embodiment 10: An apparatus for processing voice information provided by the present invention, as shown in FIG. 13, includes: an audio signal amplifier, a second-order differential operation module (501), and an electrostatic speaker; the second-order differential operation module (501) has The function of performing second order differential operation on signals. The second order differential operation function of the second order differential operation module (501) can be implemented by hardware or software. The input audio signal is amplified by the audio signal amplifier and added to the second order differential. A signal input terminal of an operation module (501), and a signal output by the second-order differential operation module (501) is added to a signal input terminal of the electrostatic speaker so that the electrostatic speaker generates sound; the second-order differential in this embodiment The operation module (501) may also be implemented by being integrated inside the audio signal amplifier.
实施例11：本发明提供的一种处理语音信息的装置，如图14包括：音频信号放大器、三阶微分运算模块(601)和静电扬声器；所述三阶微分运算模块(601)具有对信号进行三阶微分运算的功能，所述三阶微分运算模块(601)的三阶微分运算功能可以用硬件或软件实现，输入音频信号经所述音频信号放大器放大后加在所述三阶微分运算模块(601)的信号输入端，所述三阶微分运算模块(601)输出的信号加在所述静电扬声器的信号输入端从而使所述静电扬声器产生声音；本实施例中的三阶微分运算模块(601)也可以集成在所述音频信号放大器内部实现。Embodiment 11: An apparatus for processing voice information provided by the present invention, as shown in FIG. 14, includes: an audio signal amplifier, a third-order differential operation module (601), and an electrostatic speaker; the third-order differential operation module (601) has a pair of signals A function of performing a third-order differential operation. The third-order differential operation function of the third-order differential operation module (601) may be implemented by hardware or software. An input audio signal is amplified by the audio signal amplifier and added to the third-order differential operation. A signal input terminal of the module (601), and a signal output by the third-order differential operation module (601) is added to a signal input terminal of the electrostatic speaker so that the electrostatic speaker generates sound; the third-order differential operation in this embodiment The module (601) may also be implemented inside the audio signal amplifier.
实施例12：本发明提供的一种处理语音信息的装置，如图15，包括：一阶微分运算模块(401)、音频信号放大器、二阶微分运算模块(501)和静电扬声器；所述一阶微分运算模块(401)具有对信号进行一阶微分运算的功能，所述二阶微分运算模块(501)具有对信号进行二阶微分运算的功能，所述一阶微分运算模块(401)和所述二阶微分运算模块(501)的微分运算功能都可以用硬件或软件实现，输入音频信号经所述一阶微分运算模块(401)进行一阶微分运算后加在所述音频信号放大器的信号输入端，所述音频信号放大器输出的信号再经所述二阶微分运算模块(501)进行二阶微分运算，所述二阶微分运算模块(501)输出的信号加在所述静电扬声器的信号输入端从而使所述静电扬声器产生声音；本实施例中的一阶微分运算模块(401)和二阶微分运算模块(501)在所述系统中的位置可以互换；所述一阶微分运算模块(401)和二阶微分运算模块(501)或两者之一也可以集成在所述音频信号放大器的内部实现。Embodiment 12: An apparatus for processing voice information provided by the present invention, as shown in FIG. 15, includes: a first-order differential operation module (401), an audio signal amplifier, a second-order differential operation module (501), and an electrostatic speaker; A first order differential operation module (401) has a function of performing a first order differential operation on a signal, and the second order differential operation module (501) has a function of performing a second order differential operation on the signal. The first order differential operation module (401) and The differential operation function of the second-order differential operation module (501) can be implemented by hardware or software. The input audio signal is subjected to first-order differential operation by the first-order differential operation module (401) and added to the audio signal amplifier. At the signal input end, the signal output by the audio signal amplifier is subjected to a second order differential operation by the second order differential operation module (501), and the signal output by the second order differential operation module (501) is added to the electrostatic speaker. The signal input end causes the electrostatic speaker to generate sound; the positions of the first-order differential operation module (401) and the second-order differential operation module (501) in this embodiment can be mutually ; The first derivative calculation block (401) and a second order differential operator module (501) one or both may also be integrated within the audio signal amplifier is implemented.
实施例13：本发明提供的一种处理语音信息的装置，如图16，包括：音频信号放大器、一阶微分运算模块(401)和动圈式扬声器；所述一阶微分运算模块(401)具有对信号进行一阶微分运算的功能，所述一阶微分运算模块(401)的一阶微分运算功能可以用硬件或软件实现，输入音频信号经所述音频信号放大器放大后加在所述一阶微分运算模块(401)的信号输入端，所述一阶微分运算模块(401)输出的信号加在所述动圈式扬声器的信号输入端从而使所述静电扬声器产生声音；本实施例中的一阶微分运算模块(401)也可以集成在所述音频信号放大器内部实现。Embodiment 13: An apparatus for processing voice information provided by the present invention, as shown in FIG. 16, includes: an audio signal amplifier, a first-order differential operation module (401), and a dynamic coil speaker; the first-order differential operation module (401) It has the function of performing first order differential operation on the signal. The first order differential operation function of the first order differential operation module (401) can be implemented by hardware or software. The input audio signal is amplified by the audio signal amplifier and added to the first order. A signal input terminal of the first order differential operation module (401), and a signal output by the first order differential operation module (401) is added to the signal input terminal of the dynamic coil speaker so that the electrostatic speaker generates sound; in this embodiment, The first-order differential operation module (401) may also be implemented inside the audio signal amplifier.
实施例14：本发明提供的一种处理语音信息的装置，如图17，包括：音频信号放大器、二阶微分运算模块(501)和动圈式扬声器；所述二阶微分运算模块(501)具有对信号进行二阶微分运算的功能，所述二阶微分运算模块(501)的二阶微分运算功能可以用硬件或软件实现，输入音频信号经所述音频信号放大器放大后加在所述二阶微分运算模块(501)的信号输入端，所述二阶微分运算模块(501)输出的信号加在所述动圈式扬声器的信号输入端从而使所述动圈式扬声器产生声音；本实施例中的二阶微分运算模块(501)也可以集成在所述音频信号放大器内部实现。Embodiment 14: An apparatus for processing voice information provided by the present invention, as shown in FIG. 17, includes: an audio signal amplifier, a second-order differential operation module (501), and a dynamic coil speaker; the second-order differential operation module (501) The second-order differential operation function of the second-order differential operation module (501) can be implemented by hardware or software. The input audio signal is amplified by the audio signal amplifier and added to the second-order differential operation. A signal input terminal of the first order differential operation module (501), and a signal output by the second order differential operation module (501) is added to a signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound; The second-order differential operation module (501) in the example may also be implemented by being integrated inside the audio signal amplifier.
实施例15：本发明提供的一种处理语音信息的装置，如图18，包括：两个一阶微分运算模块(401)、 音频信号放大器和动圈式扬声器；所述的两个一阶微分运算模块(401)都具有对信号进行一阶微分运算的功能，所述的两个一阶微分运算模块(401)的一阶微分运算功能可以用硬件或软件实现，输入音频信号向经过所述的其中一个一阶微分运算模块(401)进行一阶微分运算后加在所述音频信号放大器的信号输入端，所述音频信号放大器输出的信号经所述的另一个一阶微分运算模块(401)进行一阶微分运算后加在所述动圈式扬声器的信号输入端从而使所述动圈式扬声器产生声音；本实施例中两个一阶微分运算模块(401)或其中之一也可以集成在所述音频信号放大器内部实现。Embodiment 15: An apparatus for processing voice information provided by the present invention, as shown in FIG. 18, includes: two first-order differential operation modules (401), an audio signal amplifier, and a dynamic speaker; the two first-order differentials The operation module (401) has a function of performing a first order differential operation on the signal. The first order differential operation function of the two first order differential operation modules (401) can be implemented by hardware or software. One of the first-order differential operation modules (401) performs a first-order differential operation and adds the signal to the signal input terminal of the audio signal amplifier, and the signal output by the audio signal amplifier passes through the other first-order differential operation module (401 ) After performing a first order differential operation, the signal is added to the signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound; in this embodiment, two first order differential operation modules (401) or one of them may also be used. The integration is implemented inside the audio signal amplifier.
实施例16：本发明提供的一种处理语音信息的装置，如图19，包括：音频信号放大器、三阶微分运算模块(601)和动圈式扬声器；所述三阶微分运算模块(601)具有对信号进行三阶微分运算的功能，所述三阶微分运算模块(601)的三阶微分运算功能可以用硬件或软件实现，输入音频信号经所述音频信号放大器放大后加在所述三阶微分运算模块(601)的信号输入端，所述三阶微分运算模块(601)输出的信号加在所述动圈式扬声器的信号输入端从而使所述动圈式扬声器产生声音；本实施例中的三阶微分运算模块(601)也可以集成在所述音频信号放大器内部实现。Embodiment 16: An apparatus for processing voice information provided by the present invention, as shown in FIG. 19, includes: an audio signal amplifier, a third-order differential operation module (601), and a dynamic coil speaker; the third-order differential operation module (601) It has a function of performing a third order differential operation on a signal. The third order differential operation function of the third order differential operation module (601) can be implemented by hardware or software. The input audio signal is amplified by the audio signal amplifier and added to the third order. A signal input terminal of a first-order differential operation module (601), and a signal output by the third-order differential operation module (601) is added to a signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound; The third-order differential operation module (601) in the example may also be implemented by being integrated inside the audio signal amplifier.
实施例17：本发明提供的一种处理语音信息的装置，如图20，包括：三阶微分运算模块(601)、音频信号放大器和动圈式扬声器；所述三阶微分运算模块(601)具有对信号进行三阶微分运算的功能，所述三阶微分运算模块(601)的三阶微分运算功能可以用硬件或软件实现，输入音频信号经所述三阶微分运算模块(601)进行三阶微分运算后加在所述音频信号放大器的信号输入端，所述音频信号放大器输出的信号加在所述动圈式扬声器的信号输入端从而使所述动圈式扬声器产生声音；本实施例中的三阶微分运算模块(601)也可以集成在所述音频信号放大器内部实现。Embodiment 17: A device for processing voice information provided by the present invention, as shown in FIG. 20, includes: a third-order differential operation module (601), an audio signal amplifier, and a dynamic speaker; the third-order differential operation module (601) It has a function of performing a third order differential operation on a signal. The third order differential operation function of the third order differential operation module (601) can be implemented by hardware or software. The input audio signal is performed by the third order differential operation module (601). Added to the signal input terminal of the audio signal amplifier after the order differential operation, and the signal output from the audio signal amplifier is added to the signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound; this embodiment The third-order differential operation module (601) can also be integrated into the audio signal amplifier and implemented.
实施例18：本发明提供的一种处理语音信息的装置，如图21，包括：一阶微分运算模块(401)、音频信号放大器、二阶微分运算模块(501)和带式扬声器；所述一阶微分运算模块(401)具有对信号进行一阶微分运算的功能，所述二阶微分运算模块(501)具有对信号进行二阶微分运算的功能，所述一阶微分运算模块(401)和所述二阶微分运算模块(501)的微分运算功能可以用硬件或软件实现，输入音频信号经所述一阶微分运算模块(401)进行一阶微分运算后加在所述音频信号放大器的信号输入端，所述音频信号放大器输出的信号再经所述的二阶微分运算模块(501)进行二阶微分运算后加在所述带式扬声器的信号输入端从而使所述带式扬声器产生声音；本实施例中的一阶微分运算模块(401)和二阶微分运算模块(501)或其中之一也可以集成在所述音频信号放大器内部实现。Embodiment 18: An apparatus for processing voice information provided by the present invention, as shown in FIG. 21, includes: a first-order differential operation module (401), an audio signal amplifier, a second-order differential operation module (501), and a band speaker; A first order differential operation module (401) has a function of performing a first order differential operation on a signal, and the second order differential operation module (501) has a function of performing a second order differential operation on a signal, and the first order differential operation module (401) The differential operation function of the second-order differential operation module (501) may be implemented by hardware or software. An input audio signal is subjected to a first-order differential operation by the first-order differential operation module (401) and added to the audio signal amplifier. A signal input terminal, and the signal output by the audio signal amplifier is subjected to a second-order differential operation by the second-order differential operation module (501), and then added to the signal input terminal of the band speaker, so that the band speaker generates Sound; or one of the first order differential operation module (401) and the second order differential operation module (501) in this embodiment may also be implemented by being integrated inside the audio signal amplifier.
实施例19：本发明提供的一种处理语音信息的装置，如图22，包括：音频信号放大器、四阶微分运算模块(2201)和动圈式扬声器；所述四阶微分运算模块(2201)具有对信号进行四阶微分运算的功能，所述四阶微分运算模块(2201)的四阶微分运算功能可以用硬件或软件实现，输入音频信号经所述音频信号放大器放大后加在所述四阶微分运算模块(2201)的信号输入端，所述四阶微分运算模块(2201)输出 的信号加在所述动圈式扬声器的信号输入端从而使所述动圈式扬声器产生声音；本实施例中的四阶微分运算模块(2201)也可以集成在所述音频信号放大器内部实现。Embodiment 19: An apparatus for processing voice information provided by the present invention, as shown in FIG. 22, includes: an audio signal amplifier, a fourth-order differential operation module (2201), and a dynamic coil speaker; the fourth-order differential operation module (2201) It has a function of performing a fourth-order differential operation on a signal. The fourth-order differential operation function of the fourth-order differential operation module (2201) can be implemented by hardware or software. The input audio signal is amplified by the audio signal amplifier and added to the fourth A signal input terminal of the first-order differential operation module (2201), and a signal output by the fourth-order differential operation module (2201) is added to a signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound; The fourth-order differential operation module (2201) in the example may also be implemented by being integrated inside the audio signal amplifier.
实施例20：本发明提供的一种处理语音信息的装置，如图23，包括：两个二阶微分运算模块(501)、音频信号放大器和动圈式扬声器；所述二阶微分运算模块(501)具有对信号进行二阶微分运算的功能，所述二阶微分运算模块(501)的二阶微分运算功能可以用硬件或软件实现，输入音频信号先经过所述的其中一个二阶微分运算模块(501)进行二阶微分运算后加到所述音频信号放大器的信号输入端，所述音频信号放大器输出的信号再经过所述的另一个二阶微分运算模块(501)进行二阶微分运算后加在所述动圈式扬声器的信号输入端从而使所述动圈式扬声器产生声音；本实施例中的两个二阶微分运算模块(501)也可以集成在所述音频信号放大器内部实现。Embodiment 20: A device for processing voice information provided by the present invention, as shown in FIG. 23, includes: two second-order differential operation modules (501), an audio signal amplifier, and a dynamic coil speaker; the second-order differential operation module ( 501) has a function of performing a second order differential operation on a signal, and the second order differential operation function of the second order differential operation module (501) may be implemented by hardware or software, and the input audio signal first passes through one of the second order differential operations described above The module (501) performs a second-order differential operation and adds the signal to the signal input terminal of the audio signal amplifier. The signal output by the audio signal amplifier passes through the second-order differential operation module (501) to perform a second-order differential operation. Added to the signal input end of the dynamic coil speaker to make the dynamic coil speaker generate sound; the two second-order differential operation modules (501) in this embodiment can also be integrated inside the audio signal amplifier to implement .
实施例21：本发明提供的一种处理语音信息的装置，如图24，包括：音频信号放大器、五阶微分运算模块(2401)和动圈式扬声器；所述五阶微分运算模块(2401)具有对信号进行五阶微分运算的功能，所述五阶微分运算模块(2401)的五阶微分运算功能可以用硬件或软件实现，输入音频信号经所述音频信号放大器放大后加在所述五阶微分运算模块(2401)的信号输入端，所述五阶微分运算模块(2401)输出的信号加在所述动圈式扬声器的信号输入端从而使所述动圈式扬声器产生声音；本实施例中的五阶微分运算模块(2401)也可以集成在所述音频信号放大器内部实现。Embodiment 21: An apparatus for processing voice information provided by the present invention, as shown in FIG. 24, includes: an audio signal amplifier, a fifth-order differential operation module (2401), and a dynamic coil speaker; the fifth-order differential operation module (2401) It has the function of performing fifth order differential operation on the signal. The fifth order differential operation function of the fifth order differential operation module (2401) can be implemented by hardware or software. The input audio signal is amplified by the audio signal amplifier and added to the fifth order. The signal input terminal of the first order differential operation module (2401), and the signal output by the fifth order differential operation module (2401) is added to the signal input terminal of the dynamic coil speaker so that the dynamic coil speaker generates sound; this implementation The fifth-order differential operation module (2401) in the example may also be implemented by being integrated inside the audio signal amplifier.
实施例22：本发明提供的一种处理语音信息的装置，如图25，包括：二阶微分运算模块(501)、音频信号放大器、三阶微分运算模块(601)和动圈式扬声器；所述的二阶微分运算模块(501)具有对信号进行二阶微分运算的功能，所述三阶微分运算模块(601)具有对信号进行三阶微分运算的功能，所述的二阶微分运算模块(501)和所述三阶微分运算模块(601)的微分运算功能可以用硬件或软件实现，输入音频信号经所述二阶微分运算模块(501)进行二阶微分运算后加在所述音频信号放大器的信号输入端，所述音频信号放大器输出的信号再经所述三阶微分运算模块(601)进行三阶微分运算后加在所述动圈式扬声器的信号输入端从而使所述动圈式扬声器产生声音；本实施例中的二阶微分运算模块(501)和三阶微分运算模块(601)或其中之一也可以集成在所述音频信号放大器内部实现。Embodiment 22: An apparatus for processing voice information provided by the present invention, as shown in FIG. 25, includes: a second-order differential operation module (501), an audio signal amplifier, a third-order differential operation module (601), and a dynamic coil speaker; The second-order differential operation module (501) has a function of performing a second-order differential operation on a signal, the third-order differential operation module (601) has a function of performing a third-order differential operation on a signal, and the second-order differential operation module (501) and the differential operation function of the third-order differential operation module (601) may be implemented by hardware or software, and an input audio signal is added to the audio after the second-order differential operation is performed by the second-order differential operation module (501). A signal input terminal of a signal amplifier, and a signal output from the audio signal amplifier is subjected to a third-order differential operation by the third-order differential operation module (601), and then added to a signal input terminal of the dynamic coil speaker to make the dynamic The ring speaker generates sound; the second order differential operation module (501) and the third order differential operation module (601) or one of them in this embodiment may also be integrated into the audio signal amplifier and implemented.
实施例23：本发明提供的一种通信装置，如图26，包括：存储器、数模转换模块(D/A转换模块)、音频信号放大器、二阶微分运算模块和静电扬声器；所述存储器可以暂时存储数字音频信号，所述数模转换模块(D/A转换模块)可以将接收到的数字音频信号转换为相应的模拟音频信号，所述二阶微分运算模块具有对所述模拟音频信号进行二阶微分运算的功能，所述二阶微分运算模块的二阶微分运算功能可以用硬件或软件实现；所述存储器输出的数字音频信号经所述数模转换模块(A/D转换模块)转换为相应的模拟音频信号后传输至所述音频信号放大器的信号输入端，所述音频信号放大器输出的模拟音频信号经所述二阶微分运算模块进行二阶微分运算后加在所述静电扬声器的信号输入端，从而使所述静电扬声器产生 声音。Embodiment 23: A communication device provided by the present invention, as shown in FIG. 26, includes: a memory, a digital-to-analog conversion module (D / A conversion module), an audio signal amplifier, a second-order differential operation module, and an electrostatic speaker; the memory may The digital audio signal is temporarily stored. The digital-to-analog conversion module (D / A conversion module) can convert the received digital audio signal into a corresponding analog audio signal. The second-order differential operation module has a function of processing the analog audio signal. A second-order differential operation function. The second-order differential operation function of the second-order differential operation module may be implemented by hardware or software; the digital audio signal output from the memory is converted by the digital-to-analog conversion module (A / D conversion module). After the corresponding analog audio signal is transmitted to the signal input terminal of the audio signal amplifier, the analog audio signal output by the audio signal amplifier is subjected to a second order differential operation by the second order differential operation module and added to the electrostatic speaker. A signal input end, so that the electrostatic speaker generates sound.
本实施例中所述的二阶微分模块可以用一阶或三阶微分运算模块替代，所述一阶或三阶微分运算模块的微分运算功能可以用硬件或软件实现。The second-order differential module described in this embodiment may be replaced by a first-order or third-order differential operation module, and the differential operation function of the first-order or third-order differential operation module may be implemented by hardware or software.
实施例24：本发明提供的一种通信装置，如图27，包括：存储器、数模转换模块(D/A转换模块)、音频信号放大器、三阶微分运算模块和动圈式扬声器；所述存储器可以存储数音频信号，所述数模转换模块(D/A转换模块)可以将接收到的数字音频信号转换为相应的模拟音频信号；所述三阶微分运算模块具有对所述数模转换模块输出的模拟音频信号进行三阶微分运算的功能，所述三阶微分运算模块的三阶微分运算功能可以用硬件或软件实现；所述存储器输出的数字音频信号经所述数模转换模块(D/A转换模块)转换为相应的模拟音频信号后传输至所述音频信号放大器的信号输入端，所述音频信号放大器输出的模拟音频信号经所述三阶微分运算模块进行三阶微分运算后加到所述动圈式扬声器的信号输入端，从而使所述动圈式扬声器产生声音。Embodiment 24: As shown in FIG. 27, a communication device provided by the present invention includes: a memory, a digital-to-analog conversion module (D / A conversion module), an audio signal amplifier, a third-order differential operation module, and a dynamic coil speaker; The memory can store digital audio signals, and the digital-to-analog conversion module (D / A conversion module) can convert the received digital audio signals into corresponding analog audio signals; the third-order differential operation module has a function of converting the digital-to-analog signals. The analog audio signal output by the module performs a third-order differential operation function. The third-order differential operation function of the third-order differential operation module may be implemented by hardware or software; the digital audio signal output from the memory is passed through the digital-to-analog conversion module ( D / A conversion module) converts the corresponding analog audio signal to the signal input terminal of the audio signal amplifier, and the analog audio signal output by the audio signal amplifier is subjected to third-order differential operation by the third-order differential operation module. It is added to the signal input end of the dynamic coil speaker, so that the dynamic coil speaker generates sound.
本实施例中所述的三阶微分运算模块可以用一阶、二阶、四阶或五阶微分运算模块替代，所述的一阶、二阶、四阶或五阶微分模块的微分运算运算功能可以用硬件或软件实现。The third-order differential operation module described in this embodiment may be replaced by a first-, second-, fourth-, or fifth-order differential operation module. The differential-operation operations of the first-, second-, fourth-, or fifth-order differential module are described. Functions can be implemented in hardware or software.
实施例25：本发明提供的一种通信装置，如图28，包括：声电转化模块、二阶微分运算模块、模数转换模块(A/D转换模块)、载波发生器、调制器、信号放大器和天线；所述声电转化模块将音频信息源产生的语音信息转换为相应的模拟音频电信号；所述二阶微分运算模块具有对所述模拟音频电信号进行二阶微分运算的功能，所述二阶微分运算模块的二阶微分运算功能可以用硬件或软件实现；所述模数转换模块(A/D转换模块)将接收到的模拟音频电信号转化为相应的数字音频信号；所述载波发生器用于产生高频载波(频率一般在800MHz～2500MHz，便于远距离传输)，所述调制器可以将需要发送的数字音频信号与所述载波进行运算从而使经运算后的载波包含了所述数字音频信号的信息；所述信号放大器对所述调制器输出的已调波进行放大以达到足够的功率便于发送，所述的经调制的载波(包含有所述数字音频信号的信息)通过所述天线转换为电磁波并发送出去。Embodiment 25: A communication device provided by the present invention, as shown in FIG. 28, includes an acoustic-electric conversion module, a second-order differential operation module, an analog-to-digital conversion module (A / D conversion module), a carrier generator, a modulator, and a signal. An amplifier and an antenna; the acoustic-electrical conversion module converts speech information generated by an audio information source into a corresponding analog audio-electric signal; the second-order differential operation module has a function of performing a second-order differential operation on the analog audio-electric signal, The second-order differential operation function of the second-order differential operation module can be implemented by hardware or software; the analog-to-digital conversion module (A / D conversion module) converts the received analog audio electrical signals into corresponding digital audio signals; The carrier generator is used to generate a high-frequency carrier (the frequency is generally in the range of 800MHz to 2500MHz, which is convenient for long-distance transmission), and the modulator can perform operations on the digital audio signal to be transmitted and the carrier, so that the calculated carrier includes Information of the digital audio signal; the signal amplifier amplifies the modulated wave output by the modulator to achieve sufficient power to facilitate transmission The modulated carrier (including information of the digital audio signal) is converted into an electromagnetic wave by the antenna and transmitted.
本实施例中所述的二阶微分运算模块可以用一阶、三阶、四阶或五阶微分运算模块替代，所述一阶、三阶、四阶或五阶微分运算模块的微分运算功能可以用硬件或软件实现。The second-order differential operation module described in this embodiment may be replaced by a first-, third-, fourth-, or fifth-order differential operation module, and the differential-operation function of the first-, third-, fourth-, or fifth-order differential operation module. It can be implemented in hardware or software.
实施例26：本发明提供的一种通信装置，如图29，包括：天线、初级信号放大器、解调器、数模转换模块(D/A转换模块)、二阶微分运算模块、末级信号放大器和静电扬声器；所述天线用于接收由空间传来的电磁波，所述初级信号放大器对天线接收到的微弱的电信号进行放大，所述解调器从接收到的已调波中将发端发送的数字音频信号还原出来，所述数模转换模块(D/A转换模块)将所述解调器还原出的数字音频信号转换为相应的模拟音频信号；所述二阶微分运算模块具有对所述模拟音频信号进行二阶微分运算的功能，所述二阶微分运算模块的二阶微分运算的功能可以用硬件或软件实现；所述模拟音频信号经 所述二阶微分运算模块进行二阶微分运算后再经所述末级信号放大器放大，所述末级信号放大器输出的信号加到所述静电扬声器的信号输入端，从而使所述静电扬声器产生声音。Embodiment 26: As shown in FIG. 29, a communication device provided by the present invention includes an antenna, a primary signal amplifier, a demodulator, a digital-to-analog conversion module (D / A conversion module), a second-order differential operation module, and a final-stage signal. Amplifier and electrostatic speaker; the antenna is used to receive electromagnetic waves transmitted from space, the primary signal amplifier amplifies the weak electrical signal received by the antenna, and the demodulator will send the end from the received modulated wave The digital audio signal sent is restored, and the digital-to-analog conversion module (D / A conversion module) converts the digital audio signal restored by the demodulator into a corresponding analog audio signal; the second-order differential operation module has The function of performing second order differential operation on the analog audio signal, and the function of second order differential operation of the second order differential operation module may be implemented by hardware or software; the analog audio signal is performed second order by the second order differential operation module. After the differential operation, the signal is amplified by the final stage signal amplifier, and the signal output by the final stage signal amplifier is added to the signal input terminal of the electrostatic speaker, so that Said electrostatic speakers produce sound.
本实施例中所述的二阶微分运算模块可以用具有一阶或三阶微分运算功能的模块替代，所述的具有一阶或三阶微分运算功能的模块的微分运算功能可以用硬件或软件实现。The second-order differential operation module described in this embodiment may be replaced by a module having a first-order or third-order differential operation function, and the differential operation function of the module having the first-order or third-order differential operation function may be hardware or software. achieve.
实施例27：本发明提供的一种通信装置，如图30，包括：天线、初级信号放大器、解调器、数模转换模块(D/A转换模块)、三阶微分运算模块、末级信号放大器和动圈式扬声器；所述天线用于接收由空间传来的电磁波，所述初级信号放大器用于对所述天线接收到的微弱的电信号(其电压一般为mV或μV级)进行放大，所述解调器从接收到的已调波中将发端发送的数字音频信号还原出来，所述数模转换模块(D/A转换模块)将所述解调器还原出的数字音频信号转换为相应的模拟音频信号；所述三阶微分运算模块具有对所述模拟音频信号进行三阶微分运算的功能，所述三阶微分运算模块的微分运算功能可以用硬件或软件实现；所述模拟音频信号经所述三阶微分运算模块进行三阶微分运算后再经所述末级信号放大器放大，所述末级信号放大器输出的模拟音频信号加在所述动圈式扬声器的信号输入端，从而使所述动圈式扬声器产生声音。Embodiment 27: As shown in FIG. 30, a communication device provided by the present invention includes an antenna, a primary signal amplifier, a demodulator, a digital-to-analog conversion module (D / A conversion module), a third-order differential operation module, and a final-stage signal. Amplifier and dynamic coil speaker; the antenna is used to receive electromagnetic waves from space, and the primary signal amplifier is used to amplify the weak electrical signal (the voltage is generally mV or μV level) received by the antenna The demodulator restores the digital audio signal sent by the sender from the received modulated wave, and the digital-to-analog conversion module (D / A conversion module) converts the digital audio signal restored by the demodulator. Is a corresponding analog audio signal; the third-order differential operation module has a function of performing a third-order differential operation on the analog audio signal, and the differential operation function of the third-order differential operation module may be implemented by hardware or software; the simulation The audio signal is subjected to a third-order differential operation by the third-order differential operation module, and then amplified by the final-stage signal amplifier. The analog audio signal output by the final-stage signal amplifier is added to the signal amplifier. Signal input dynamic speaker so that the sound generated by the speaker moving coil.
本实施例中所述的三阶微分运算模块可以用具有一阶、二阶、四阶或五阶微分运算功能的模块替代，所述的具有一阶、二阶、四阶或五阶微分运算功能的模块的微分运算功能可以用硬件或软件实现。The third-order differential operation module described in this embodiment may be replaced by a module having a first-, second-, fourth-, or fifth-order differential operation function, and the first-, second-, fourth-, or fifth-order differential operations are described. The differential calculation function of the functional module can be realized by hardware or software.
上述各实施例是从具体实现方式上对本发明的技术方案所做的描述，以使本领域的技术人员可以更清楚、更准确地理解本发明技术方案的核心思路，作为本领域一般技术人员，可以在不改变本发明技术方案核心思路的基础上，对这些实施例进行适当的等效变换、重新组合以达到同样的技术效果，故这些实施例不能作为对本发明内容的限制，本发明要求保护的范围以权利要求书所界定的范围为准。The above embodiments are descriptions of the technical solutions of the present invention in terms of specific implementations, so that those skilled in the art can more clearly and accurately understand the core ideas of the technical solutions of the present invention. As a person of ordinary skill in the art, Without changing the core idea of the technical solution of the present invention, these embodiments can be appropriately equivalently transformed and recombined to achieve the same technical effect. Therefore, these embodiments cannot be used as a limitation on the content of the present invention. The present invention claims protection. The scope is subject to the scope defined by the claims.

Claims (68)

  1. 一种静电扬声器，包括音频变压器(301)、高压直流电源(302)、两个固定极板(303)和振膜(304)，其特征在于：在输入音频信号传输到所述静电扬声器的两个固定极板(303)之前对所述输入信号进行了二阶微分运算；所述音频变压器(301)对所述输入信号进行升压，所述高压直流电源(302)给所述振膜(304)提供净电荷，所述振膜(304)处于所述的两个固定极板(303)之间；所述的经二阶微分运算的信号加在所述两个固定极板(303)上从而在所述两个固定极板(303)之间形成变化的电场，所述振膜(304)受所述变化的电场施加的电场力的作用而振动产生声音。An electrostatic speaker includes an audio transformer (301), a high-voltage DC power supply (302), two fixed electrode plates (303), and a diaphragm (304). The electrostatic speaker is characterized in that two input audio signals are transmitted to the two of the electrostatic speaker. Two fixed-pole plates (303) previously performed a second-order differential operation on the input signal; the audio transformer (301) boosted the input signal, and the high-voltage DC power supply (302) provided the diaphragm ( 304) Provide a net charge, the diaphragm (304) is between the two fixed plates (303), and the signal subjected to the second-order differential operation is added to the two fixed plates (303) As a result, a changing electric field is formed between the two fixed electrode plates (303), and the diaphragm (304) is vibrated to generate sound by the action of an electric field force applied by the changing electric field.
  2. 一种静电扬声器，包括音频变压器(301)、高压直流电源(302)、两个固定极板(303)和振膜(304)，其特征在于：在所述静电扬声器内存在具有对输入音频信号进行二阶微分运算功能的模块；所述模块的二阶微分运算功能可以用硬件或软件实现，所述音频变压器(301)对所述输入信号进行升压，所述高压直流电源(302)给所述振膜(304)提供净电荷，所述振膜(304)处于所述的两个固定极板(303)之间；经所述模块进行了二阶微分运算的信号加在所述两个固定极板(303)上从而在所述两个固定极板(303)之间形成变化的电场，所述振膜(304)受所述变化的电场施加的电场力的作用而振动产生声音。An electrostatic speaker includes an audio transformer (301), a high-voltage direct current power source (302), two fixed electrode plates (303), and a diaphragm (304). The electrostatic speaker is characterized in that the electrostatic speaker has a pair of input audio signals. A module for performing a second-order differential operation function; the second-order differential operation function of the module may be implemented by hardware or software, the audio transformer (301) boosts the input signal, and the high-voltage DC power supply (302) provides The diaphragm (304) provides a net charge, and the diaphragm (304) is located between the two fixed plates (303); a signal subjected to a second-order differential operation by the module is added to the two A variable electric field is formed between the two fixed electrode plates (303), and the diaphragm (304) is vibrated to generate sound by the electric field force applied by the changed electric field. .
  3. 根据权利要求2所述的静电扬声器，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述静电扬声器的信号输入端传输到所述两个固定极板(303)所经过的路径。The electrostatic speaker according to claim 2, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal input terminal of the electrostatic speaker to the two The path traversed by two fixed plates (303).
  4. 根据权利要求2所述的静电扬声器，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述静电扬声器的信号输入端传输到所述音频变压器(301)的信号输入端所经过的路径。The electrostatic speaker according to claim 2, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal input terminal of the electrostatic speaker to the audio The path traversed by the signal input of the transformer (301).
  5. 根据权利要求2所述的静电扬声器，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述音频变压器(301)的信号输出端传输到所述两个固定极板(303)所经过的路径。The electrostatic speaker according to claim 2, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal output terminal of the audio transformer (301) to The path that the two fixed plates (303) pass.
  6. 根据权利要求2所述的静电扬声器，其特征在于：所述模块位于所述音频变压器(301)的内部。The electrostatic speaker according to claim 2, wherein the module is located inside the audio transformer (301).
  7. 一种静电扬声器，包括音频变压器(301)、高压直流电源(302)、两个固定极板(303)和振膜(304)，其特征在于：在输入音频信号传输到所述静电扬声器的两个固定极板(303)之前对所述信号进行了n阶微分运算，所述n阶微分运算仅包括一阶或三阶微分运算；所述音频变压器(301)对所述输入信号进行升压，所述高压直流电源(302)给所述振膜(304)提供净电荷，所述振膜(304)处于所述的两个固定极板(303)之间；经所述n阶微分运算的信号加在所述两个固定极板(303)上从而在所述两个固定极板(303)之间形成变化的电场，所述振膜(304)受所述变化的电场施加的电场力的作用而振动产生声音。An electrostatic speaker includes an audio transformer (301), a high-voltage DC power supply (302), two fixed electrode plates (303), and a diaphragm (304). The electrostatic speaker is characterized in that two input audio signals are transmitted to the two of the electrostatic speaker. N fixed-order plates (303) previously performed n-th order differential operation on the signal, the n-th order differential operation only includes first-order or third-order differential operation; the audio transformer (301) boosts the input signal The high-voltage DC power supply (302) provides a net charge to the diaphragm (304), and the diaphragm (304) is located between the two fixed plates (303); after the n-th order differential operation A signal is added to the two fixed plates (303) to form a changing electric field between the two fixed plates (303), and the diaphragm (304) is subjected to an electric field applied by the changed electric fields The vibration of force produces sound.
  8. 一种静电扬声器，包括音频变压器(301)、高压直流电源(302)、两个固定极板(303)和振膜(304)，其特征在于：在所述静电扬声器内存在具有对输入音频信号进行n阶微分运算功能的模块，所述n阶微分 运算仅包括一阶或三阶微分运算；所述模块的微分运算功能可以用硬件或软件实现，所述音频变压器(301)对所述输入信号进行升压，所述高压直流电源(302)给所述振膜(304)提供净电荷，所述振膜(304)处于所述的两个固定极板(303)之间；经所述模块进行了微分运算的信号加在所述两个固定极板(303)上从而在所述两个固定极板(303)之间形成变化的电场，所述振膜(304)受所述变化的电场施加的电场力的作用而振动产生声音。An electrostatic speaker includes an audio transformer (301), a high-voltage direct current power source (302), two fixed electrode plates (303), and a diaphragm (304). The electrostatic speaker is characterized in that the electrostatic speaker has a pair of input audio signals. A module for performing an n-th order differential operation function, the n-th order differential operation only includes a first-order or a third-order differential operation; the differential operation function of the module may be implemented by hardware or software, and the audio transformer (301) inputs the input The signal is boosted, and the high-voltage DC power supply (302) provides a net charge to the diaphragm (304), and the diaphragm (304) is located between the two fixed plates (303); The signal subjected to the differential operation of the module is added to the two fixed plates (303) to form a changing electric field between the two fixed plates (303), and the diaphragm (304) is subject to the change. The electric field force applied by the electric field causes vibration to generate sound.
  9. 根据权利要求8所述的静电扬声器，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述静电扬声器的信号输入端传输到所述两个固定极板(303)所经过的路径。The electrostatic speaker according to claim 8, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal input terminal of the electrostatic speaker to the two The path traversed by two fixed plates (303).
  10. 根据权利要求8所述的静电扬声器，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述静电扬声器的信号输入端传输到所述音频变压器(301)的信号输入端所经过的路径。The electrostatic speaker according to claim 8, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal input terminal of the electrostatic speaker to the audio The path traversed by the signal input of the transformer (301).
  11. 根据权利要求8所述的静电扬声器，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述音频变压器(301)的信号输出端传输到所述两个固定极板(303)所经过的路径。The electrostatic speaker according to claim 8, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal output terminal of the audio transformer (301) to The path that the two fixed plates (303) pass.
  12. 根据权利要求8所述的静电扬声器，其特征在于：所述模块位于所述音频变压器(301)的内部。The electrostatic speaker according to claim 8, wherein the module is located inside the audio transformer (301).
  13. 一种处理音频信号的装置，包括音频信号放大器、静电扬声器，其特征在于：在输入音频信号传输到所述静电扬声器的两个固定极板之前对所述输入信号进行了二阶微分运算；所述音频信号放大器对所述输入信号进行放大，所述的进行了二阶微分运算的输入信号加在所述静电扬声器的两个固定极板上，使所述静电扬声器产生声音。A device for processing audio signals includes an audio signal amplifier and an electrostatic speaker, which is characterized in that a second-order differential operation is performed on the input signal before the input audio signal is transmitted to two fixed plates of the electrostatic speaker; The audio signal amplifier amplifies the input signal, and the input signal subjected to the second-order differential operation is added to two fixed electrode plates of the electrostatic speaker, so that the electrostatic speaker generates sound.
  14. 一种处理音频信号的装置，包括音频信号放大器、静电扬声器，其特征在于：在所述装置内存在具有对输入音频信号进行二阶微分运算功能的模块；所述模块的二阶微分运算功能可以用硬件或软件实现，所述音频信号放大器对所述输入信号进行放大；所述输入信号从所述装置的信号输入端传输至所述静电扬声器的两个固定极板的过程中经所述模块进行了二阶微分运算，当所述输入信号传输到所述静电扬声器的两个固定极板上时使得所述静电扬声器产生声音。A device for processing audio signals includes an audio signal amplifier and an electrostatic speaker, and is characterized in that a module having a function of performing a second-order differential operation on an input audio signal exists in the device; the second-order differential operation function of the module can be Implemented by hardware or software, the audio signal amplifier amplifies the input signal; the input signal is transmitted from the signal input end of the device to the two fixed pole plates of the electrostatic speaker via the module A second-order differential operation is performed to cause the electrostatic speaker to generate sound when the input signal is transmitted to two fixed electrode plates of the electrostatic speaker.
  15. 根据权利要求14所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述装置的信号输入端传输到所述静电扬声器的两个固定极板(303)所经过的路径。The device according to claim 14, wherein the module is located on a transmission path of the input signal, and the transmission path is a path for the input signal to be transmitted from a signal input terminal of the device to the electrostatic speaker. The path traversed by the two fixed plates (303).
  16. 根据权利要求14所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述装置的信号输入端传输到所述音频信号放大器的信号输入端所经过的路径。The device according to claim 14, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal input terminal of the device to the audio signal amplifier. The path that the signal input of the.
  17. 根据权利要求14所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传 输路径为所述输入信号从所述音频信号放大器的信号输出端传输到所述静电扬声器的两个固定极板(303)所经过的路径。The device according to claim 14, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal output terminal of the audio signal amplifier to the static electricity. The path traversed by the two fixed plates (303) of the speaker.
  18. 根据权利要求14所述的装置，其特征在于：所述模块位于所述音频信号放大器的内部。The device according to claim 14, wherein the module is located inside the audio signal amplifier.
  19. 一种处理音频信号的装置，包括音频信号放大器、静电扬声器，其特征在于：在输入音频信号传输到所述静电扬声器的信号输入端之前对所述输入信号进行了n阶微分运算，所述n阶微分运算仅包括一阶或三阶微分运算；所述音频信号放大器对所述输入信号进行放大，进行了所述n阶微分运算的输入信号加在所述静电扬声器的固定极板上，使所述静电扬声器产生声音。A device for processing an audio signal includes an audio signal amplifier and an electrostatic speaker, and is characterized in that an n-th order differential operation is performed on the input signal before the input audio signal is transmitted to the signal input terminal of the electrostatic speaker, and the n The first order differential operation includes only first order or third order differential operations; the audio signal amplifier amplifies the input signal, and the input signal subjected to the nth order differential operation is added to a fixed electrode plate of the electrostatic speaker, so that The electrostatic speaker generates sound.
  20. 一种处理音频信号的装置，包括音频信号放大器、静电扬声器，其特征在于：在所述装置内存在具有对输入音频信号进行n阶微分运算功能的模块，所述n阶微分运算仅包括一阶或三阶微分运算；所述模块的微分运算功能可以用硬件或软件实现，所述音频信号放大器对所述输入信号进行放大；经所述模块进行了微分运算的输入信号传输到所述静电扬声器的两个固定极板上使得所述静电扬声器产生声音。A device for processing audio signals, including an audio signal amplifier and an electrostatic speaker, characterized in that: a module having an n-th order differential operation function for an input audio signal exists in the device, and the n-th order differential operation includes only a first order Or third-order differential operation; the module's differential operation function can be implemented by hardware or software, the audio signal amplifier amplifies the input signal; and the input signal subjected to the differential operation by the module is transmitted to the electrostatic speaker The two fixed pole plates of the X-rays make the electrostatic speaker produce sound.
  21. 根据权利要求20所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述装置的信号输入端传输到所述静电扬声器的两个固定极板(303)所经过的路径。The device according to claim 20, wherein the module is located on a transmission path of the input signal, and the transmission path is a path for transmitting the input signal from a signal input terminal of the device to the electrostatic speaker. The path traversed by the two fixed plates (303).
  22. 根据权利要求20所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述装置的信号输入端传输到所述音频信号放大器的信号输入端所经过的路径。The device according to claim 20, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal input terminal of the device to the audio signal amplifier The path that the signal input of the.
  23. 根据权利要求20所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述音频变压器(301)的信号输出端传输到所述静电扬声器的两个固定极板(303)所经过的路径。The device according to claim 20, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal output terminal of the audio transformer (301) to all The path taken by the two fixed electrode plates (303) of the electrostatic speaker will be described.
  24. 根据权利要求20所述的装置，其特征在于：所述模块位于所述音频信号放大器的内部。The device according to claim 20, wherein the module is located inside the audio signal amplifier.
  25. 一种动圈式扬声器，包括磁体、音圈、定心支片和振膜，其特征在于：在输入音频信号传输到所述音圈之前对所述信号进行了三阶微分运算；所述音圈处于所述磁体产生的磁场中，所述音圈、所述振膜和所述定心支片连接在一起，所述定心支片维持所述音圈只沿轴线方向运动；所述的经三阶微分运算的信号通过所述音圈时，所述音圈由于受磁场力作用而振动从而带动所述振膜振动产生声音。A dynamic coil speaker includes a magnet, a voice coil, a centering support, and a diaphragm, and is characterized in that a third-order differential operation is performed on the input audio signal before the signal is transmitted to the voice coil; The coil is in a magnetic field generated by the magnet, the voice coil, the diaphragm, and the centering support are connected together, and the centering support maintains the voice coil to move only in the axial direction; When the signal subjected to the third-order differential operation passes through the voice coil, the voice coil vibrates due to a magnetic field force, thereby driving the diaphragm to vibrate to generate sound.
  26. 一种动圈式扬声器，包括磁体、音圈、定心支片和振膜，其特征在于：在所述动圈式扬声器内存在具有对输入音频信号进行三阶微分运算功能的模块；所述模块的三阶微分运算功能可以用硬件或软件实现，所述音圈处于所述磁体产生的磁场中，所述音圈、所述振膜和所述定心支片连接在一起，所述定心支片维持所述音圈只沿轴线方向运动；经所述模块进行了三阶微分运算的输入信号通过所述音圈时，所述音圈由于受磁场力作用而振动从而带动所述振膜振动产生声音。A dynamic coil speaker includes a magnet, a voice coil, a centering support, and a diaphragm, and is characterized in that a module having a function of performing a third-order differential operation on an input audio signal exists in the dynamic coil speaker; The third-order differential calculation function of the module can be implemented by hardware or software. The voice coil is in the magnetic field generated by the magnet. The voice coil, the diaphragm, and the centering support are connected together. The heart branch maintains that the voice coil moves only in the axial direction; when an input signal that has undergone a third-order differential operation through the module passes through the voice coil, the voice coil vibrates due to a magnetic field force, thereby driving the vibration Membrane vibration produces sound.
  27. 一种动圈式扬声器，包括磁体、音圈、定心支片和振膜，其特征在于：在输入音频信号传输到所述动圈式扬声器的音圈之前对所述输入信号进行了n阶微分运算，所述n阶微分运算仅包括一阶、二阶、四阶或五阶微分运算；所述音圈处于所述磁体产生的磁场中，所述音圈、所述振膜和所述定心支片连接在一起，所述定心支片维持所述音圈只沿轴线方向运动；经所述n阶微分运算后的输入信号通过所述音圈时，所述音圈由于受磁场力作用而振动从而带动所述振膜振动产生声音。A dynamic coil speaker includes a magnet, a voice coil, a centering support, and a diaphragm, and is characterized in that the input signal is subjected to n-th order before the input audio signal is transmitted to the voice coil of the dynamic coil speaker. Differential operation, the n-order differential operation includes only first-order, second-order, fourth-order, or fifth-order differential operations; the voice coil is in a magnetic field generated by the magnet, and the voice coil, the diaphragm, and the The centering support pieces are connected together, the centering support pieces maintain the voice coil to move only along the axis direction; when the input signal after the n-th order differential operation passes through the voice coil, the voice coil is subject to a magnetic field The force acts to vibrate, thereby driving the diaphragm to vibrate to generate sound.
  28. 一种动圈式扬声器，包括磁体、音圈、定心支片和振膜，其特征在于：在所述动圈式扬声器内存在具有对输入音频信号进行n阶微分运算功能的模块，所述n阶微分运算仅包括一阶、二阶、四阶或五阶微分运算；所述模块的微分运算功能可以用硬件或软件实现；所述音圈处于所述磁体产生的磁场中，所述音圈、所述振膜和所述定心支片连接在一起，所述定心支片维持所述音圈只沿轴线方向运动；经所述模块进行了微分运算的输入信号通过所述音圈时，所述音圈由于受磁场力的作用而振动，从而带动所述振膜振动产生声音。A dynamic coil speaker includes a magnet, a voice coil, a centering support, and a diaphragm. The dynamic coil speaker includes a module having an n-th order differential operation function on an input audio signal. The n-order differential operation includes only first-, second-, fourth-, or fifth-order differential operations; the differential operation function of the module can be implemented by hardware or software; the voice coil is in a magnetic field generated by the magnet, and the sound The coil, the diaphragm, and the centering support are connected together, and the centering support maintains the voice coil to move only in the axial direction; the input signal subjected to the differential operation by the module passes the voice coil At this time, the voice coil vibrates due to the effect of the magnetic field force, thereby driving the diaphragm to vibrate to generate sound.
  29. 一种处理音频信号的装置，包括音频信号放大器、动圈式扬声器，其特征在于：在输入音频信号传输到所述动圈式扬声器的音圈之前对所述输入信号进行了三阶微分运算；所述音频信号放大器对所述输入信号进行放大，所述的进行了三阶微分运算的输入信号通过所述动圈式扬声器的音圈时，使所述动圈式扬声器产生声音。A device for processing audio signals, including an audio signal amplifier and a dynamic coil speaker, characterized in that a third-order differential operation is performed on the input signal before the input audio signal is transmitted to the voice coil of the dynamic coil speaker; The audio signal amplifier amplifies the input signal, and when the input signal subjected to the third-order differential operation passes through the voice coil of the dynamic coil speaker, the dynamic coil speaker generates sound.
  30. 一种处理音频信号的装置，包括音频信号放大器、动圈式扬声器，其特征在于：在所述装置中存在具有对输入音频信号进行三阶微分运算功能的模块；所述模块的三阶微分运算功能可以用硬件或软件实现，所述音频信号放大器对所述输入信号进行放大，经所述模块进行了三阶微分运算的输入信号通过所述动圈式扬声器的音圈时，使所述动圈式扬声器产生声音。A device for processing audio signals, including an audio signal amplifier and a dynamic coil speaker, characterized in that a module having a function of performing a third-order differential operation on an input audio signal exists in the device; and a third-order differential operation of the module The function can be implemented by hardware or software. The audio signal amplifier amplifies the input signal. When the input signal that has undergone third-order differential operation through the module passes the voice coil of the dynamic coil speaker, the dynamic signal Hoop speakers produce sound.
  31. 根据权利要求30所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述装置的信号输入端传输到所述动圈式扬声器的音圈所经过的路径。The device according to claim 30, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal input terminal of the device to the moving coil type The path the speaker's voice coil traverses.
  32. 根据权利要求30所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述装置的信号输入端传输到所述音频信号放大器的信号输入端所经过的路径。The device according to claim 30, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal input terminal of the device to the audio signal amplifier The path that the signal input of the.
  33. 根据权利要求30所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述音频信号放大器的信号输出端传输到所述动圈式扬声器的音圈所经过的路径。The device according to claim 30, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal output terminal of the audio signal amplifier to the dynamic signal amplifier. The path that the voice coil of a coil speaker goes through.
  34. 根据权利要求30所述的装置，其特征在于：所述模块位于所述音频信号放大器的内部。The apparatus according to claim 30, wherein the module is located inside the audio signal amplifier.
  35. 一种处理音频信号的装置，包括音频信号放大器、动圈式扬声器，其特征在于：在输入音频信号传输到所述动圈式扬声器的音圈之前对所述输入信号进行了n阶微分运算，所述n阶微分运算仅包括一阶、二阶、四阶或五阶微分运算；所述音频信号放大器对信号进行放大，所述的进行了n阶微分运算的输入信 号通过所述动圈式扬声器的音圈时，使所述动圈式扬声器产生声音。An apparatus for processing audio signals, including an audio signal amplifier and a dynamic coil speaker, characterized in that: an n-th order differential operation is performed on the input signal before the input audio signal is transmitted to the voice coil of the dynamic coil speaker, The n-th order differential operation includes only first-order, second-order, fourth-order, or fifth-order differential operations; the audio signal amplifier amplifies a signal, and the input signal subjected to the n-order differential operation passes the dynamic coil type When the voice coil of the loudspeaker is used, the moving coil loudspeaker generates sound.
  36. 一种处理音频信号的装置，包括音频信号放大器、动圈式扬声器，其特征在于：在所述装置内存在具有对输入信号进行n阶微分运算功能的模块，所述n阶微分运算仅包括一阶、二阶、四阶或五阶微分运算；所述模块的微分运算功能可以用硬件或软件实现，所述音频信号放大器对所述输入信号进行放大，经所述模块进行了微分运算的输入信号通过所述动圈式扬声器的音圈时，使所述动圈式扬声器产生声音。A device for processing audio signals includes an audio signal amplifier and a dynamic coil speaker, and is characterized in that a module having an n-th order differential operation function for an input signal exists in the device, and the n-th order differential operation includes only one Order, second-order, fourth-order, or fifth-order differential operation; the module's differential operation function can be implemented by hardware or software, the audio signal amplifier amplifies the input signal, and inputs the differential operation through the module When a signal passes through the voice coil of the dynamic coil speaker, the dynamic coil speaker generates sound.
  37. 根据权利要求36所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述装置的信号输入端传输到所述动圈式扬声器的音圈所经过的路径。The device according to claim 36, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal input terminal of the device to the moving coil type The path the speaker's voice coil traverses.
  38. 根据权利要求36所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述装置的信号输入端传输到所述音频信号放大器的信号输入端所经过的路径。The device according to claim 36, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal input terminal of the device to the audio signal amplifier The path that the signal input of the.
  39. 根据权利要求36所述的装置，其特征在于：所述模块位于所述输入信号的传输路径上，所述传输路径为所述输入信号从所述音频信号放大器的信号输出端传输到所述动圈式扬声器的音圈所经过的路径。The apparatus according to claim 36, wherein the module is located on a transmission path of the input signal, and the transmission path is that the input signal is transmitted from a signal output terminal of the audio signal amplifier to the dynamic signal amplifier. The path that the voice coil of a coil speaker goes through.
  40. 根据权利要求36所述的装置，其特征在于：所述模块位于所述音频信号放大器的内部。The apparatus according to claim 36, wherein the module is located inside the audio signal amplifier.
  41. 一种用于处理音频信号的装置，其特征在于，包括：数模转换模块、二阶微分运算模块和静电扬声器；所述数模转换模块将接收到的数字音频信号转换为相应的模拟音频信号，所述二阶微分运算模块具有对所述模拟音频信号进行二阶微分运算的功能，所述二阶微分运算模块的二阶微分运算功能可以用硬件或软件实现，所述数模转换模块输出的模拟音频信号经所述二阶微分运算模块进行二阶微分运算后加在所述静电扬声器的信号输入端，从而使所述静电扬声器产生声音。An apparatus for processing audio signals, comprising: a digital-to-analog conversion module, a second-order differential operation module, and an electrostatic speaker; the digital-to-analog conversion module converts a received digital audio signal into a corresponding analog audio signal The second-order differential operation module has a function of performing a second-order differential operation on the analog audio signal. The second-order differential operation function of the second-order differential operation module may be implemented by hardware or software, and the digital-to-analog conversion module outputs The analog audio signal is added to the signal input terminal of the electrostatic speaker after the second-order differential operation is performed by the second-order differential operation module, so that the electrostatic speaker generates sound.
  42. 根据权利要求41所述的装置，其特征在于：所述的装置中还包含存储器；所述存储器用于存储数字音频信号。The device according to claim 41, wherein the device further comprises a memory; and the memory is used for storing digital audio signals.
  43. 根据权利要求41所述的装置，其特征在于：所述的装置中还包含音频信号放大器；所述末级信号放大器用于对所述模拟音频信号进行放大以增大所述模拟音频信号的功率，从而提高所述静电扬声器产生的声音音量。The device according to claim 41, wherein the device further comprises an audio signal amplifier; the final-stage signal amplifier is used to amplify the analog audio signal to increase the power of the analog audio signal , Thereby increasing the volume of sound generated by the electrostatic speaker.
  44. 一种用于处理音频信号的装置，其特征在于，包括：数模转换模块、n阶微分运算模块和静电扬声器；所述数模转换模块可以将接收到的数字音频信号转换为相应的模拟音频信号，所述的n阶微分运算模块具有对所述模拟音频信号进行n阶微分运算的功能，所述的n阶微分运算仅包括一阶或三阶微分运算；所述的n阶微分运算功能可以用硬件或软件实现，经所述n阶微分运算模块进行了微分运算的模拟音频信号加在所述静电扬声器的信号输入端，从而使所述静电扬声器产生声音。An apparatus for processing audio signals, comprising: a digital-to-analog conversion module, an n-th order differential operation module, and an electrostatic speaker; the digital-to-analog conversion module can convert a received digital audio signal into corresponding analog audio Signal, the n-th order differential operation module has the function of performing n-th order differential operation on the analog audio signal, the n-th order differential operation only includes first-order or third-order differential operation; the n-th order differential operation function It may be implemented by hardware or software, and an analog audio signal which is differentially calculated by the n-th order differential operation module is added to a signal input terminal of the electrostatic speaker, so that the electrostatic speaker generates sound.
  45. 根据权利要求44所述的装置，其特征在于：所述的装置中还包括存储器；所述存储器用于存储数字音频信号。The apparatus according to claim 44, further comprising: a memory; and the memory is configured to store digital audio signals.
  46. 根据权利要求44所述的装置，其特征在于：所述的装置中还包括音频信号放大器；所述末级信号放大器用于对所述模拟音频信号进行放大以增大所述模拟音频信号的功率，从而提高所述静电扬声器产生的声音音量。The device according to claim 44, further comprising: an audio signal amplifier; the last-stage signal amplifier is used to amplify the analog audio signal to increase the power of the analog audio signal , Thereby increasing the volume of sound generated by the electrostatic speaker.
  47. 一种用于处理音频信号的装置，其特征在于，包括：数模转换模块、三阶微分运算模块和动圈式扬声器；所述数模转换模块可以将接收到的数字音频信号转换为相应的模拟音频信号，所述三阶微分运算模块具有对所述模拟音频信号进行三阶微分运算的功能，所述三阶微分运算模块的三阶微分运算功能可以用硬件或软件实现；经所述三阶微分运算模块进行了三阶微分运算的所述模拟音频信号加在所述动圈式扬声器的信号输入端，从而使所述动圈式扬声器产生声音。A device for processing audio signals, comprising: a digital-to-analog conversion module, a third-order differential operation module, and a dynamic coil speaker; the digital-to-analog conversion module can convert a received digital audio signal into a corresponding digital audio signal. Analog audio signal, the third-order differential operation module has a function of performing third-order differential operation on the analog audio signal, and the third-order differential operation function of the third-order differential operation module may be implemented by hardware or software; The order differential operation module adds the analog audio signal of the third order differential operation to the signal input end of the dynamic coil speaker, so that the dynamic coil speaker generates sound.
  48. 根据权利要求47所述的装置，其特征在于：所述的装置中还包括存储器；所述存储器用于存储数字音频信号。The device according to claim 47, wherein the device further comprises a memory; and the memory is used for storing digital audio signals.
  49. 根据权利要求47所述的装置，其特征在于：所述的装置中还包括音频信号放大器；The device according to claim 47, wherein the device further comprises an audio signal amplifier;
    所述末级信号放大器用于对所述模拟音频信号进行放大以增大所述模拟音频信号的功率，从而提高所述动圈式扬声器产生的声音音量。The last-stage signal amplifier is configured to amplify the analog audio signal to increase the power of the analog audio signal, thereby increasing the volume of the sound generated by the dynamic coil speaker.
  50. 一种用于处理音频信号的装置，其特征在于，包括：数模转换模块、n阶微分运算模块和动圈式扬声器；所述数模转换模块可以将接收到的数字音频信号转换为相应的模拟音频信号，所述n阶微分运算模块具有对所述模拟音频信号进行n阶微分运算的功能，所述的n阶微分运算仅包括一阶、二阶、四阶或五阶微分运算；所述n阶微分运算模块的微分运算功能可以用硬件或软件实现；经所述n阶微分运算模块进行了微分运算的模拟音频信号加在所述动圈式扬声器的信号输入端，从而使所述动圈式扬声器产生声音。A device for processing audio signals, comprising: a digital-to-analog conversion module, an n-th order differential operation module, and a dynamic coil speaker; the digital-to-analog conversion module can convert a received digital audio signal into a corresponding digital audio signal. For analog audio signals, the n-th order differential operation module has a function of performing n-th order differential operations on the analog audio signals. The n-th order differential operations only include first-order, second-order, fourth-order, or fifth-order differential operations; The differential operation function of the n-th order differential operation module may be implemented by hardware or software; an analog audio signal subjected to the differential operation by the n-th order differential operation module is added to a signal input terminal of the dynamic coil speaker, so that the Dynamic coil speakers produce sound.
  51. 根据权利要求50所述的装置，其特征在于：所述的装置中还包括存储器；所述存储器用于存储数字音频信号。The device according to claim 50, wherein the device further comprises a memory; the memory is used for storing digital audio signals.
  52. 根据权利要求50所述的装置，其特征在于：所述的装置中还包括音频信号放大器；所述末级信号放大器用于对所述模拟音频信号进行放大以增大所述模拟音频信号的功率，从而提高所述动圈式扬声器产生的声音音量。The device according to claim 50, wherein the device further comprises an audio signal amplifier; the final-stage signal amplifier is configured to amplify the analog audio signal to increase the power of the analog audio signal , Thereby increasing the volume of the sound generated by the dynamic coil speaker.
  53. 一种通信装置，其特征在于，包括：声电转换模块、二阶微分运算模块、模数转换模块、载波发生器、调制器和天线；所述声电转换模块将音频信息源产生的语音信息转换为相应的模拟音频电信号，所述二阶微分运算模块具有对所述模拟音频电信号进行二阶微分运算的功能，所述二阶微分运算模块的二阶微分运算功能可以用硬件或软件实现；经所述二阶微分运算模块进行了二阶微分运算的所述模拟音频电信号加在所述模数转换模块的信号输入端，所述模数转换模块可以将接收到的模拟音频电信号转换为相应的数字音频信号；所述数字音频信号加在所述调制器的基带信号输入端，所述调制器利用接收到的数字音频 信号调制所述载波发生器产生的载波并传输至所述天线，所述天线将接收到的经调制的载波转换为电磁波并发送出去。A communication device, comprising: an acoustic-electric conversion module, a second-order differential operation module, an analog-to-digital conversion module, a carrier generator, a modulator, and an antenna; the acoustic-electric conversion module converts voice information generated by an audio information source Converted into corresponding analog audio electrical signals, the second-order differential operation module has a function of performing second-order differential operation on the analog audio electrical signals, and the second-order differential operation function of the second-order differential operation module can be implemented by hardware or software Achieved; the analog audio electrical signal subjected to the second-order differential operation by the second-order differential operation module is added to the signal input terminal of the analog-to-digital conversion module, and the analog-to-digital conversion module can receive the received analog audio electrical signal The signal is converted into a corresponding digital audio signal; the digital audio signal is added to a baseband signal input end of the modulator, and the modulator uses the received digital audio signal to modulate a carrier wave generated by the carrier generator and transmits it to the Said antenna, said antenna converts the received modulated carrier wave into an electromagnetic wave and sends it out.
  54. 根据权利要求53所述的通信装置，其特征在于：所述的装置中还包括信号放大器；所述信号放大器用于对调制器输出的已调波进行放大，并将放大后的载波传输至所述天线。The communication device according to claim 53, characterized in that: the device further comprises a signal amplifier; the signal amplifier is used to amplify the modulated wave output from the modulator, and transmit the amplified carrier to all Mentioned antenna.
  55. 一种通信装置，其特征在于，包括：声电转换模块、n阶微分运算模块、模数转换模块、载波发生器、调制器和天线；所述声电转换模块可以将音频信息源产生的语音信息转换为相应的模拟音频电信号，所述n阶微分运算模块具有对所述模拟音频电信号进行n阶微分运算的功能，所述的n阶微分运算仅包括一阶、三阶、四阶或五阶微分运算；所述n阶微分运算模块的n阶微分运算功能可以用硬件或软件实现，经所述n阶微分运算模块进行了微分运算的所述模拟音频电信号加在所述模数转换模块的信号输入端，所述模数转换模块可以将接收到的模拟音频电信号转换为相应的数字音频信号；所述数字音频信号加在所述调制器的基带信号输入端，所述调制器利用接收到的数字音频信号调制所述载波发生器产生的载波并传输至所述天线，所述天线将接收到的经调制的载波转换为电磁波并发送出去。A communication device, comprising: an acoustic-electric conversion module, an n-th order differential operation module, an analog-to-digital conversion module, a carrier generator, a modulator, and an antenna; the acoustic-electric conversion module can convert voice generated by an audio information source The information is converted into corresponding analog audio electrical signals. The n-th order differential operation module has a function of performing n-th order differential operations on the analog audio-electric signals. The n-th order differential operations include only first-order, third-order, and fourth-order. Or the fifth-order differential operation; the n-th order differential operation function of the n-th order differential operation module may be implemented by hardware or software, and the analog audio electric signal subjected to the differential operation by the n-th order differential operation module is added to the analog A signal input terminal of a digital conversion module, the analog-to-digital conversion module may convert a received analog audio electrical signal into a corresponding digital audio signal; the digital audio signal is added to a baseband signal input terminal of the modulator, The modulator uses the received digital audio signal to modulate the carrier generated by the carrier generator and transmits it to the antenna, and the antenna will receive the received modulated The carrier wave is converted into electromagnetic waves and transmitted.
  56. 根据权利要求55所述的通信装置，其特征在于：所述的装置中还包括信号放大器；所述信号放大器用于对调制器输出的已调波进行放大，并将放大后的载波传输至所述天线。The communication device according to claim 55, wherein the device further comprises a signal amplifier; the signal amplifier is used to amplify the modulated wave output by the modulator, and transmit the amplified carrier to all Mentioned antenna.
  57. 一种通信装置，其特征在于，包括：天线、解调器、数模转换模块、二阶微分运算模块和静电扬声器；所述天线用于接收由空间传来的经调制的电磁波，所述解调器从接收到的已调波中将发端发送的数字音频信号还原出来，所述数模转换模块将所述解调器还原出的数字音频信号转换为相应的模拟音频信号，所述二阶微分运算模块具有对所述模拟音频信号进行二阶微分运算的功能，所述二阶微分运算模块的二阶微分运算功能可以用硬件或软件实现；经所述二阶微分运算模块进行了二阶微分运算的所述模拟音频信号加在所述静电扬声器的信号输入端，从而使所述静电扬声器产生声音。A communication device, comprising: an antenna, a demodulator, a digital-to-analog conversion module, a second-order differential operation module, and an electrostatic speaker; the antenna is used to receive a modulated electromagnetic wave transmitted from space, and the solution The tuner restores the digital audio signal sent by the sender from the received modulated wave, and the digital-to-analog conversion module converts the digital audio signal restored by the demodulator into a corresponding analog audio signal, the second order The differential operation module has a function of performing a second order differential operation on the analog audio signal. The second order differential operation function of the second order differential operation module may be implemented by hardware or software; a second order is performed by the second order differential operation module. The analog audio signal of the differential operation is added to a signal input terminal of the electrostatic speaker, so that the electrostatic speaker generates sound.
  58. 根据权利要求57所述的通信装置，其特征在于：所述的装置中还包括初级信号放大器；所述初级信号放大器用于对天线接收到的电信号进行放大。The communication device according to claim 57, wherein the device further comprises a primary signal amplifier; the primary signal amplifier is used to amplify the electric signal received by the antenna.
  59. 根据权利要求57所述的通信装置，其特征在于：所述的装置中还包括末级信号放大器；所述末级信号放大器用于对所述数模转换模块输出的模拟音频信号进行放大以增大所述模拟音频信号的功率，从而提高所述静电扬声器产生的声音音量。The communication device according to claim 57, wherein the device further comprises a final-stage signal amplifier; the final-stage signal amplifier is configured to amplify the analog audio signal output by the digital-to-analog conversion module to increase The power of the analog audio signal is increased, thereby increasing the sound volume generated by the electrostatic speaker.
  60. 一种通信装置，其特征在于，包括：天线、解调器、数模转换模块、n阶微分运算模块和静电扬声器；所述天线用于接收由空间传来的经调制的电磁波，所述解调器从接收到的已调波中将发端发送的数字音频信号还原出来，所述数模转换模块将所述解调器还原出的数字音频信号转换为相应的模拟音频信号，所述n阶微分运算模块具有对所述模拟音频信号进行n阶微分运算的功能，所述的n阶微分运算仅包括一阶或三阶微分运算，所述n阶微分运算模块的n阶微分运算功能可以用硬件或软件实现；经所述n阶 微分运算模块进行了微分运算的所述模拟音频信号加在所述静电扬声器的信号输入端，从而使所述静电扬声器产生声音。A communication device, comprising: an antenna, a demodulator, a digital-to-analog conversion module, an n-th order differential operation module, and an electrostatic speaker; the antenna is used to receive a modulated electromagnetic wave transmitted from space, and the solution The tuner restores the digital audio signal sent by the sender from the received modulated wave, and the digital-to-analog conversion module converts the digital audio signal restored by the demodulator into a corresponding analog audio signal, the n-th order The differential operation module has a function of performing n-th order differential operation on the analog audio signal. The n-th order differential operation includes only first-order or third-order differential operation. The n-th order differential operation function of the n-th order differential operation module can be used. It is implemented by hardware or software; the analog audio signal subjected to the differential operation by the n-th order differential operation module is added to a signal input terminal of the electrostatic speaker, so that the electrostatic speaker generates sound.
  61. 根据权利要求60所述的通信装置，其特征在于：所述的装置中还包括初级信号放大器；所述初级信号放大器用于对天线接收到的电信号进行放大。The communication device according to claim 60, wherein the device further comprises a primary signal amplifier; the primary signal amplifier is used to amplify the electric signal received by the antenna.
  62. 根据权利要求60所述的通信装置，其特征在于：所述的装置中还包括末级信号放大器；所述末级信号放大器用于对所述模拟音频信号进行放大以增大所述模拟音频信号的功率，从而提高所述静电扬声器产生的声音音量。The communication device according to claim 60, wherein the device further comprises a final stage signal amplifier; the final stage signal amplifier is configured to amplify the analog audio signal to increase the analog audio signal Power, thereby increasing the volume of the sound produced by the electrostatic speaker.
  63. 一种通信装置，其特征在于，包括：天线、解调器、数模转换模块、三阶微分运算模块和动圈式扬声器；所述天线用于接收由空间传来的经调制的电磁波，所述解调器可以从接收到的已调波中将发端发送的数字音频信号还原出来，所述数模转换模块将所述解调器还原出的数字音频信号转换为相应的模拟音频信号，所述三阶微分运算模块具有对所述模拟音频信号进行三阶微分运算的功能，所述三阶微分运算模块的三阶微分运算功能可以用硬件或软件实现；经所述三阶微分运算模块进行了三阶微分运算的所述模拟音频信号加在所述动圈式扬声器的信号输入端，从而使所述动圈式扬声器产生声音。A communication device is characterized by comprising: an antenna, a demodulator, a digital-to-analog conversion module, a third-order differential operation module, and a dynamic coil speaker; the antenna is used to receive modulated electromagnetic waves transmitted from space. The demodulator can restore the digital audio signal sent by the sender from the received modulated wave, and the digital-to-analog conversion module converts the digital audio signal restored by the demodulator into a corresponding analog audio signal. The third-order differential operation module has a function of performing a third-order differential operation on the analog audio signal. The third-order differential operation function of the third-order differential operation module may be implemented by hardware or software; The analog audio signal subjected to the third-order differential operation is added to a signal input terminal of the dynamic coil speaker, so that the dynamic coil speaker generates sound.
  64. 根据权利要求63所述的通信装置，其特征在于：所述的装置中还包括初级信号放大器；所述初级信号放大器用于对天线接收到的电信号进行放大。The communication device according to claim 63, wherein the device further comprises a primary signal amplifier; the primary signal amplifier is used to amplify the electric signal received by the antenna.
  65. 根据权利要求63所述的通信装置，其特征在于：所述的装置中还包括末级信号放大器；所述末级信号放大器用于对所述模拟音频信号进行放大以增大所述模拟音频信号的功率，从而提高所述动圈式扬声器产生的声音音量。The communication device according to claim 63, wherein the device further comprises a final stage signal amplifier; the final stage signal amplifier is configured to amplify the analog audio signal to increase the analog audio signal Power, thereby increasing the volume of the sound produced by the dynamic coil speaker.
  66. 一种通信装置，其特征在于，包括：天线、解调器、数模转换模块、n阶微分运算模块和动圈式扬声器；所述天线用于接收由空间传来的经调制的电磁波，所述解调器从接收到的已调波中将发端发送的数字音频信号还原出来，所述数模转换模块将所述解调器还原出的数字音频信号转换为相应的模拟音频信号；所述n阶微分运算模块具有对所述模拟音频信号进行n阶微分运算的功能，所述的n阶微分运算仅包括一阶、二阶、四阶或五阶微分运算，所述n阶微分运算模块的微分运算功能可以用硬件或软件实现；经所述n阶微分运算模块进行了微分运算的所述模拟音频信号加在所述动圈式扬声器的信号输入端，从而使所述动圈式扬声器产生声音。A communication device is characterized in that it includes: an antenna, a demodulator, a digital-to-analog conversion module, an n-th order differential operation module, and a dynamic coil speaker; the antenna is used to receive modulated electromagnetic waves transmitted from space. The demodulator restores the digital audio signal sent by the sender from the received modulated wave, and the digital-to-analog conversion module converts the digital audio signal restored by the demodulator into a corresponding analog audio signal; the The n-th order differential operation module has a function of performing n-th order differential operation on the analog audio signal. The n-th order differential operation includes only first-order, second-order, fourth-order, or fifth-order differential operation. The n-th order differential operation module The differential operation function can be implemented by hardware or software; the analog audio signal subjected to the differential operation by the n-th order differential operation module is added to the signal input terminal of the dynamic coil speaker, so that the dynamic coil speaker Produce sound.
  67. 根据权利要求66所述的通信装置，其特征在于：所述的装置中还包括初级信号放大器；所述初级信号放大器用于对天线接收到的电信号进行放大。The communication device according to claim 66, wherein the device further comprises a primary signal amplifier; the primary signal amplifier is used to amplify the electric signal received by the antenna.
  68. 根据权利要求66所述的通信装置，其特征在于：所述的装置中还包括末级信号放大器；所述末级信号放大器用于对所述模拟音频信号进行放大以增大所述模拟音频信号的功率，从而提高所述动圈式扬声器产生的声音音量。The communication device according to claim 66, wherein the device further comprises a final-stage signal amplifier; the final-stage signal amplifier is configured to amplify the analog audio signal to increase the analog audio signal Power, thereby increasing the volume of the sound produced by the dynamic coil speaker.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050031132A1 (en) * 2003-08-07 2005-02-10 Tymphany Corporation Control system
CN102118678A (en) * 2011-04-02 2011-07-06 嘉兴中科声学科技有限公司 Method and system for measuring speaker parameters by using current sensor
CN105554656A (en) * 2016-02-29 2016-05-04 歌尔声学股份有限公司 Moving-coil loudspeaker structure and audio playing device
CN106165445A (en) * 2014-02-26 2016-11-23 帝瓦雷公司 For controlling the equipment of speaker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2538699B1 (en) * 2011-06-22 2015-11-11 Nxp B.V. Control of a loudspeaker output
EP2642769B1 (en) * 2012-03-20 2017-12-13 Nxp B.V. A loudspeaker drive circuit for determining loudspeaker characteristics and/or diagnostics
KR101601370B1 (en) * 2013-12-05 2016-03-09 현대자동차주식회사 AMP reset system and method
US9881630B2 (en) * 2015-12-30 2018-01-30 Google Llc Acoustic keystroke transient canceler for speech communication terminals using a semi-blind adaptive filter model

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050031132A1 (en) * 2003-08-07 2005-02-10 Tymphany Corporation Control system
CN102118678A (en) * 2011-04-02 2011-07-06 嘉兴中科声学科技有限公司 Method and system for measuring speaker parameters by using current sensor
CN106165445A (en) * 2014-02-26 2016-11-23 帝瓦雷公司 For controlling the equipment of speaker
CN105554656A (en) * 2016-02-29 2016-05-04 歌尔声学股份有限公司 Moving-coil loudspeaker structure and audio playing device

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