CN106101934A - Speaker and the method for adjustment of speaker amplitude - Google Patents

Speaker and the method for adjustment of speaker amplitude Download PDF

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Publication number
CN106101934A
CN106101934A CN201610639711.2A CN201610639711A CN106101934A CN 106101934 A CN106101934 A CN 106101934A CN 201610639711 A CN201610639711 A CN 201610639711A CN 106101934 A CN106101934 A CN 106101934A
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CN
China
Prior art keywords
amplitude
pole plate
vibrating diaphragm
capacitor
power amplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610639711.2A
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Chinese (zh)
Inventor
李以龙
廖柏树
张鹏飞
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Publication date
Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to CN201610639711.2A priority Critical patent/CN106101934A/en
Publication of CN106101934A publication Critical patent/CN106101934A/en
Pending legal-status Critical Current

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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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • 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
    • 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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

The disclosure is directed to speaker and the method for adjustment of speaker amplitude.This speaker includes vibrating diaphragm, intelligent power amplifier, capacitor, power supply, current detection module, wherein: capacitor, power supply, current detection module are connected in series to form loop, current detection module is connected with the input of intelligent power amplifier, and the outfan of intelligent power amplifier is connected with vibrating diaphragm；First pole plate of capacitor is arranged on the surface of vibrating diaphragm, and the second pole plate of capacitor and the first pole plate at a distance, are arranged on surface or the underface of the first pole plate；Current detection module, the electric current in measure loop, and by the current feedback that records to intelligent power amplifier；Intelligent power amplifier, the electric current that reception current detection module records, and the amplitude of vibrating diaphragm is determined according to electric current, the output signal of intelligent power amplifier is adjusted according to the amplitude of vibrating diaphragm.This technical scheme can record the real amplitude of vibrating diaphragm in real time, feeds back to upper strata and output signal is done process in real time.

Description

Speaker and the method for adjustment of speaker amplitude
Technical field
It relates to loudspeaker techniques field, particularly relate to speaker and the method for adjustment of speaker amplitude.
Background technology
Along with the rise of intelligent machine, more frivolous, more intelligent, the more power saving of mobile phone governs Mobile phone horn constantly to frivolous Exhibition, come therewith is that the lifting to the tonequality of mobile phone brings huge challenge.Intelligent machine comes once music grand banquet without Being suspected to be a kind of extravagant hope, SmartPA (Smart Power Amplifier, intelligent power amplifier) starts in mobile phone extensive Application, to adapt to the impact that the thinnest mobile phones design brings to speaker loudness and tonequality.SmartPA is at traditional PA On the basis of, the current/voltage sensing IV sensor adding outfan does and feeds back, and IV sensor is connected to speaker two letter On number line.
The amplitude of the vibrating diaphragm of loudspeaker and two factors are relevant, and one is the frequency of voice data play, and one is power The magnitude of voltage of amplifier output, due to the characteristic of speaker itself, for the signal of different frequency range, the amplitude of vibrating diaphragm is different , under the frequency fixing situation of voice data, adjust the magnitude of voltage of power amplifier output, thus it is possible to vary the amplitude of vibrating diaphragm.
Based on this principle, pre-build the model of amplitude corresponding to frequency, voltage.Process at playing audio-fequency data In, the frequency of the voice data of broadcasting, the IV of feedback are contrasted with the model pre-build, it may be determined that the vibrating diaphragm of loudspeaker Amplitude, uses corresponding algorithm to realize the adjustment to amplitude, the purpose of SmartPA by adjusting the output voltage of power amplifier Being the output voltage increasing power amplifier on the basis of not damaging speaker, SmartPA can adopt according to different frequency ranges Make adjustment in real time with corresponding model, thus avoid speaker cause damage due to the signal that amplitude is excessive or burn Bad.
It is in course of adjustment, owing to the model of the amplitude of vibrating diaphragm is to pre-build, and is in the harsh output of speaker Setting up under state when coming, the basic model after establishing can not be modified again.But the use a period of time along with mobile phone Afterwards, the material such as vibrating diaphragm can be aging, and physical characteristic can be continually changing, the basic model that starts most and present situation can there is any discrepancy, according to Current/voltage on speaker output signal line carrys out calculated amplitude, and error can be increasing.
Summary of the invention
Disclosure embodiment provides the method for adjustment of speaker amplitude, device and speaker.Described technical scheme is as follows:
First aspect according to disclosure embodiment, it is provided that a kind of speaker, including vibrating diaphragm, intelligent power amplifier, electricity Container, power supply, current detection module, wherein:
Described capacitor, power supply, current detection module are connected in series to form loop, described current detection module and described intelligence The input of energy power amplifier connects, and the outfan of described intelligent power amplifier is connected with vibrating diaphragm；
First pole plate of described capacitor is arranged on the surface of described vibrating diaphragm, the second pole plate of described capacitor and the first pole Plate at a distance, is arranged on surface or the underface of the first pole plate；
Current detection module, for detecting the electric current in described loop, and puts the current feedback recorded to intelligent power Big device；
Intelligent power amplifier, receives the electric current that current detection module records, and determines shaking of vibrating diaphragm according to described electric current Width, adjusts the output signal of intelligent power amplifier according to the amplitude of vibrating diaphragm.
In one embodiment,
Described current detection module can include Hall element；
Or
Described current detection module can include resistance, voltage detection unit, wherein, described resistance, is connected on described loop In；Described voltage detection unit is connected on the two ends of described resistance respectively, for detecting the voltage at described resistance two ends.
In one embodiment, described speaker may also include first coil and the second coil；
The outfan of described intelligent power amplifier connects one end of vibrating diaphragm by first coil；
The outfan of described intelligent power amplifier connects the other end of vibrating diaphragm by the second coil.
In one embodiment, described speaker may also include that calibration detection module；
Described calibration detection module is connected with described intelligent power amplifier, for detecting the output of intelligent power amplifier Frequency, voltage/current；
Described intelligent power amplifier is additionally operable to determine that described output frequency, voltage/current are in the model pre-build Corresponding reference amplitude, determines when described reference amplitude and the described amplitude determined are inconsistent, the reference in described model is shaken Width is adjusted to the described amplitude determined.
Second aspect according to disclosure embodiment, it is provided that the method for adjustment of a kind of speaker amplitude, including: detection electric capacity Electric current in the loop that device, power supply, current detection module are connected in series to form, wherein, the first pole plate of described capacitor is arranged On the surface of vibrating diaphragm, the second pole plate of described capacitor and the first pole plate at a distance, are arranged on just going up of the first pole plate Side/underface；
The amplitude of described vibrating diaphragm is determined according to described electric current；
Amplitude according to described vibrating diaphragm adjusts the output signal of intelligent power amplifier.
In one embodiment, described method may also include that
Output frequency according to described intelligent power amplifier, voltage/current, determine described output frequency, voltage/current Reference amplitude corresponding in the model pre-build；
Determine when described reference amplitude and the described amplitude determined are inconsistent, the reference amplitude in described model is adjusted to The described amplitude determined.
In one embodiment, the described amplitude determining described vibrating diaphragm according to described electric current, it may include:
The carried charge of pole plate be determined according to the following equation:
Q=It
Wherein, Q is the carried charge of pole plate, and I is electric current, and t is conduction time；
The change of the carried charge according to described capacitor plate determines the amplitude of described vibrating diaphragm.
In one embodiment, the described change according to the carried charge of described capacitor plate determines shaking of described vibrating diaphragm Width, it may include:
Calculate according to following equation and determine the amplitude of vibrating diaphragm:
A = ϵ S U 4 πkQ 1 - ϵ S U 4 πkQ 2
Wherein, A is the amplitude of vibrating diaphragm, and S is that the right opposite of the first pole plate of capacitor and the second pole plate amasss, and U is capacitor Both end voltage, Q1It is the first pole plate carried charge of capacitor plate, Q when being in the first vibration position2It is that the first pole plate is in second The carried charge of capacitor plate during vibration position, ε, π and k are respectively constant.
In one embodiment, in the loop that described sensing capacitor, power supply, current detection module are connected in series to form Electric current, it may include:
Electric current in the loop that use Hall element sensing capacitor, power supply, current detection module are connected in series to form； Or
The voltage at resistance two ends that detection is connected in described loop, is determined according to the following equation electric current:
I=U/R
Wherein, I is electric current, and R is resistance, and U is the voltage at R two ends.
In one embodiment, the described amplitude according to described vibrating diaphragm adjusts the output signal of intelligent power amplifier, can Including:
Determine described amplitude beyond safety range time, reduce the output signal of described intelligent power amplifier, make described in shake Width is without departing from safety range.
The third aspect according to disclosure embodiment, it is provided that the adjusting apparatus of a kind of speaker amplitude, including:
Detection module, the electric current in the loop that sensing capacitor, power supply, current detection module are connected in series to form, Wherein, the first pole plate of described capacitor is arranged on the surface of vibrating diaphragm, and the second pole plate and first pole plate of described capacitor are separated by One segment distance, is arranged on the surface/underface of the first pole plate；
First determines module, for determining the amplitude of described vibrating diaphragm according to described electric current；
First adjusting module, adjusts the output signal of intelligent power amplifier for the amplitude according to described vibrating diaphragm.
In one embodiment, described device may also include that
Second determines module, for the output frequency according to described intelligent power amplifier, voltage/current, determines described The reference amplitude that output frequency, voltage/current are corresponding in the model pre-build；
Second adjusting module, during for determining that described reference amplitude and the described amplitude determined are inconsistent, by described model In reference amplitude be adjusted to the described amplitude determined.
In one embodiment, described first determines module, it may include:
First determines submodule, for the carried charge of pole plate is determined according to the following equation:
Q=It
Wherein, Q is the carried charge of pole plate, and I is electric current, and t is conduction time；
Second determines submodule, and the change for the carried charge according to described capacitor plate determines shaking of described vibrating diaphragm Width.
In one embodiment, described second determines that submodule can be additionally used in:
Calculate according to following equation and determine the amplitude of vibrating diaphragm:
A = ϵ S U 4 πkQ 1 - ϵ S U 4 πkQ 2
Wherein, A is the amplitude of vibrating diaphragm, and S is that the right opposite of the first pole plate of capacitor and the second pole plate amasss, and U is capacitor Both end voltage, Q1It is the first pole plate carried charge of capacitor plate, Q when being in the first vibration position2It is that the first pole plate is in second The carried charge of capacitor plate during vibration position, ε, π and k are respectively constant.
In one embodiment, described detection module, it may include:
Detection sub-module, is used for using Hall element sensing capacitor, power supply, current detection module to be connected in series to form Loop in electric current；Or
3rd determines submodule, for the voltage at the resistance two ends that detection is connected in described loop, according to following equation Determine electric current:
I=U/R
Wherein, I is electric current, and R is resistance, and U is the voltage at R two ends.
In one embodiment, described first adjusting module, it may include:
Adjust submodule, when being used for determining described amplitude beyond safety range, reduce the defeated of described intelligent power amplifier Go out signal, make described amplitude without departing from safety range.
Fourth aspect according to disclosure embodiment, it is provided that the adjusting apparatus of a kind of speaker amplitude, including:
Processor；
For storing the memorizer of processor executable；
Wherein, described processor is configured to:
Electric current in the loop that sensing capacitor, power supply, current detection module are connected in series to form, wherein, described electric capacity First pole plate of device is arranged on the surface of vibrating diaphragm, and the second pole plate of described capacitor and the first pole plate at a distance, are arranged Surface/underface at the first pole plate；
The amplitude of described vibrating diaphragm is determined according to described electric current；
Amplitude according to described vibrating diaphragm adjusts the output signal of intelligent power amplifier.
Embodiment of the disclosure that the technical scheme of offer can include following beneficial effect:
The technique scheme of disclosure embodiment, by measuring the real amplitude of vibrating diaphragm in real time, speaker has simultaneously One peak swing does standard, exceedes peak swing and is accomplished by the output gain of intelligent power amplifier to reduce, reduces Output signal, so that the amplitude of vibrating diaphragm reduces, it is to avoid speaker is destroyed.Therefore, even if the material of vibrating diaphragm occurs aging, also Can accurately make feedback, reduce error.
It should be appreciated that it is only exemplary and explanatory, not that above general description and details hereinafter describe The disclosure can be limited.
Accompanying drawing explanation
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet the enforcement of the disclosure Example, and for explaining the principle of the disclosure together with description.
Fig. 1 is the circuit diagram according to the speaker shown in an exemplary embodiment.
Fig. 2 is the circuit diagram according to another speaker shown in an exemplary embodiment.
Fig. 3 is the circuit diagram according to another speaker shown in an exemplary embodiment.
Fig. 4 is the flow chart of the method for adjustment according to the speaker amplitude shown in an exemplary embodiment.
Fig. 5 is the flow chart of the method for adjustment according to the another kind of speaker amplitude shown in an exemplary embodiment.
Fig. 6 is the flow chart of the method for adjustment according to the another kind of speaker amplitude shown in an exemplary embodiment.
Fig. 7 is the block diagram of the adjusting apparatus according to the speaker amplitude shown in an exemplary embodiment.
Fig. 8 is the block diagram of the adjusting apparatus according to the another kind of speaker amplitude shown in an exemplary embodiment.
Fig. 9 is the first frame determining module 72 in the adjusting apparatus according to the speaker amplitude shown in an exemplary embodiment Figure.
Figure 10 is the block diagram of detection module 71 in the adjusting apparatus according to the speaker amplitude shown in an exemplary embodiment.
Figure 11 is another of detection module 71 in the adjusting apparatus according to the speaker amplitude shown in an exemplary embodiment Individual block diagram.
Figure 12 is the first adjusting module 73 in the adjusting apparatus according to the speaker amplitude shown in an exemplary embodiment Block diagram.
Figure 13 is the block diagram according to the adjusting apparatus being applicable to speaker amplitude shown in an exemplary embodiment.
Detailed description of the invention
Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings.Explained below relates to During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Following exemplary embodiment Described in embodiment do not represent all embodiments consistent with the disclosure.On the contrary, they are only with the most appended The example of the apparatus and method that some aspects that described in detail in claims, the disclosure are consistent.
The principle of sound of speaker can be briefly summarized as follows: produced the magnetic field of speaker by magnet.Coil is then placed in described In the middle of magnetic field.Will cutting magnetic induction line when the signal instruction with alternating current as carrier is by coil so that coil is in electromagnetism sense Shake under the influence of Ying.Vibrating diaphragm vibrations are driven by the vibrations of coil.Vibrating diaphragm repeatedly stretches and compresses neighbouring air, i.e. produces Raw sound wave.Obviously speaker is that a kind of electricity that is capable of turns the assembly of sound.
Disclosure embodiment provides a kind of speaker, as it is shown in figure 1, include vibrating diaphragm 11, shows the two of vibrating diaphragm 11 in figure Individual different vibration position (representing with solid line and dotted line respectively), intelligent power amplifier 12, capacitor 13, power supply 14, electric current inspection Survey module 15, wherein:
Capacitor 13, power supply 14, current detection module 15 are connected in series to form loop, current detection module 15 and intelligence merit The input of rate amplifier 12 connects, and the outfan of intelligent power amplifier 12 is connected with vibrating diaphragm 11；First pole of capacitor 13 Plate 131 is arranged on the surface of vibrating diaphragm 11, and the second pole plate 132 of capacitor 13 and the first pole plate 131 at a distance, are arranged on The surface of the first pole plate 131 or underface (being the surface being arranged on the first pole plate 131 shown in Fig. 1)；Current detecting mould Block 15, the electric current in measure loop, and by the current feedback that records to intelligent power amplifier 12；Intelligent power amplifier 12, the electric current that reception current detection module 15 records, and the amplitude of vibrating diaphragm 11 is determined according to electric current, adjust according to the amplitude of vibrating diaphragm 11 The output signal of whole intelligent power amplifier 12.
Can use at vibrating diaphragm 11 surface recombination conductive material to make the first pole plate 131 of capacitor 13, capacitor 13 The second pole plate 132 be fixed on the surface of the first pole plate 131, any-mode can be used to fix the second pole plate 132, such as will It is first-class that second pole plate 132 is arranged on fixed mount/fixed plate.First pole plate 131 and the second pole plate 132 constitute the two of capacitor 13 Pole.
The computing formula of electric capacity is:
C = ϵ S 4 π k d
Wherein, S is that the right opposite of two pole plates of capacitor amasss, and d is the distance between two pole plates, and remaining is constant.
Owing to vibrating diaphragm is up-down vibration, therefore S will not become, and d can become, and therefore causes C to change.Simultaneously according to following equation:
C = Q U
Wherein, Q is the carried charge of pole plate, and U is pole plate both end voltage, and in loop, U will not become, and C changes, and causes Q to change, Q Change show the directional migration of the electronics between two pole plates, therefore can be calculated the change of d by the change of detection Q.Q Can be obtained by equation below:
Q=It
Wherein, Q is the carried charge of pole plate, and I is electric current, and t is conduction time.
After determining Q, it is possible to calculate the amplitude d of vibrating diaphragm.
In one embodiment, current detection module 15 can include Hall element.
Or, current detection module 15 can include resistance, voltage detection unit, and wherein, resistant series is in the loop；Voltage Detector unit is connected on the two ends of resistance respectively, for detecting the voltage at resistance two ends.
Current detection module 15 can also be integrated with intelligent power amplifier 12, makes a chip.
In one embodiment, as in figure 2 it is shown, speaker may also include first coil 16 and the second coil 17；Intelligence merit The outfan of rate amplifier 12 connects one end of vibrating diaphragm 11 by first coil 16；The outfan of intelligent power amplifier 12 passes through Second coil 17 connects the other end of vibrating diaphragm 11.
In one embodiment, as it is shown on figure 3, speaker may also include that calibration detection module 18；Calibration detection module 18 It is connected with intelligent power amplifier 12, for detecting the output frequency of intelligent power amplifier 12, voltage/current；Intelligent power Amplifier 12 is additionally operable to determine the reference amplitude that output frequency, voltage/current are corresponding in the model pre-build, determines reference When amplitude is inconsistent with the amplitude determined, the reference amplitude in model is adjusted to the amplitude determined.
The work process of speaker is as follows: the alternating voltage of intelligent power amplifier 12 output flows through first coil 16 and the Two coil 17, because first coil 16 and the second coil 17 are in the magnetic field environment of Magnet, there is magnetic in magnetic field to electric current therein The effect of field force, therefore can have the promotion of the power in certain direction to first coil 16 and the second coil 17, and pushing direction is according to peace Training law draws, due to first coil 16 and the motion of the second coil 17, drives vibrating diaphragm on first coil 16 and the second coil 17 The vibration of 11, thus promote air vibration, it is conducted in human ear, causes drum vibration of membrane in human ear thus hear sound.Intelligence Power amplifier 12 is the driver element of speaker, and speaker needs the input of the signal of telecommunication just can have sound out.Electric current is examined After the current feedback that survey module 15 detects is to intelligent power amplifier 12, through the DSP within intelligent power amplifier 12 Do Digital Signal Analysis, then the output signal of telecommunication of intelligent power amplifier 12 is adjusted, so that vibrating diaphragm is operated in one The state of safety.The speaker that disclosure embodiment provides, by measuring the real amplitude of vibrating diaphragm 11, speaker meeting simultaneously in real time There is a peak swing to do standard, exceed peak swing and be accomplished by the output gain of intelligent power amplifier 12 to reduce, come Reduce output signal, so that the amplitude of vibrating diaphragm 11 reduces, it is to avoid speaker is destroyed.Therefore, even if the material of vibrating diaphragm 11 is sent out Raw aging, also can accurately make feedback, reduce error.
Fig. 4 is the flow chart of the method for adjustment according to a kind of speaker amplitude shown in an exemplary embodiment, such as Fig. 4 institute Showing, the method for adjustment of this speaker amplitude comprises the following steps S401-S403,
In step S401, the electric current in the loop that sensing capacitor, power supply, current detection module are connected in series to form, Wherein, the first pole plate of capacitor is arranged on the surface of vibrating diaphragm, the second pole plate of capacitor and the first pole plate at a distance, It is arranged on the surface/underface of the first pole plate.
In step S402, determine the amplitude of vibrating diaphragm according to electric current.
In step S403, adjust the output signal of intelligent power amplifier according to the amplitude of vibrating diaphragm.
The said method of disclosure embodiment, by measuring the real amplitude of vibrating diaphragm in real time and real according to the amplitude recorded Time adjust intelligent power amplifier output signal.Therefore, even if diaphragm materials occurs aging, also can accurately make feedback, subtract Few error.
In one embodiment, as it is shown in figure 5, said method can also include the steps of S404-S405:
In step s 404, according to output frequency, the voltage/current of intelligent power amplifier, output frequency, electricity are determined The reference amplitude that pressure/electric current is corresponding in the model pre-build.
In step S405, when to determine reference amplitude inconsistent with the amplitude determined, the reference amplitude in model is adjusted For the amplitude determined.
Owing to the model of vibrating diaphragm amplitude pre-builds, and it is to set up when speaker is just produced , after using a period of time along with mobile phone, diaphragm materials can occur aging, and physical characteristic is continually changing, and start most is basic There is any discrepancy for model and present situation meeting, therefore, it can be calibrated, by actually measured amplitude, the model pre-build, with reference to shaking When width is inconsistent with the amplitude determined, the reference amplitude in model is adjusted to the amplitude determined.
In one embodiment, step S402 can be embodied as following steps A1-A2:
Step A1, is determined according to the following equation the carried charge of pole plate:
Q=It
Wherein, Q is the carried charge of pole plate, and I is electric current, and t is conduction time.
Step A2, determines the amplitude of vibrating diaphragm according to the change of the carried charge of capacitor plate.
In one embodiment, step A2 may be embodied as again step A21:
Step A21, calculates according to following equation and determines the amplitude of vibrating diaphragm:
A = ϵ S U 4 πkQ 1 - ϵ S U 4 πkQ 2
Wherein, A is the amplitude of vibrating diaphragm, and S is that the right opposite of the first pole plate of capacitor and the second pole plate amasss, and U is capacitor Both end voltage, Q1It is the first pole plate carried charge of capacitor plate, Q when being in the first vibration position2It is that the first pole plate is in second The carried charge of capacitor plate during vibration position, ε, π and k are respectively constant.
In one embodiment, step S401 can be embodied as following steps B or C:
Step B, uses in the loop that Hall element sensing capacitor, power supply, current detection module are connected in series to form Electric current.
Or, step C, the voltage at detection series connection resistance two ends in the loop, electric current be determined according to the following equation:
I=U/R
Wherein, I is electric current, and R is resistance, and U is the voltage at R two ends.
In one embodiment, as shown in Figure 6, step S403 may be embodied as step S4031:
In step S4031, determine when amplitude exceeds safety range, reduce the output signal of intelligent power amplifier, make Amplitude is without departing from safety range.
The peak swing value that can bear can be pre-set, exceed peak swing and be accomplished by intelligent power amplifier Output gain reduces, and reduces output signal, so that the amplitude of vibrating diaphragm reduces, it is to avoid speaker is destroyed.When amplitude does not surpasses When going out safety range, the output signal of power amplifier is not adjusted.
Fig. 7 is the block diagram of the adjusting apparatus according to a kind of speaker amplitude shown in an exemplary embodiment, and this device can With by software, hardware or both be implemented in combination with become the some or all of of electronic equipment.As it is shown in fig. 7, this is raised one's voice The adjusting apparatus of device amplitude includes:
Detection module 71, is configured to sensing capacitor, in loop that power supply, current detection module are connected in series to form Electric current, wherein, the first pole plate of capacitor is arranged on the surface of vibrating diaphragm, and the second pole plate and first pole plate of capacitor are separated by one section Distance, is arranged on the surface/underface of the first pole plate；
First determines module 72, is configured to determine the amplitude of vibrating diaphragm according to electric current；
First adjusting module 73, is configured to the amplitude according to vibrating diaphragm and adjusts the output signal of intelligent power amplifier.
In one embodiment, as shown in Figure 8, said apparatus may also include that
Second determines module 74, is configured to the output frequency according to intelligent power amplifier, voltage/current, determines defeated Go out the reference amplitude that frequency, voltage/current are corresponding in the model pre-build；
Second adjusting module 75, when to be configured to determine that reference amplitude inconsistent with the amplitude determined, by the ginseng in model Examine amplitude and be adjusted to the amplitude determined.
In one embodiment, as it is shown in figure 9, first determines module 72, it may include:
First determines submodule 721, is configured to be determined according to the following equation the carried charge of pole plate:
Q=It
Wherein, Q is the carried charge of pole plate, and I is electric current, and t is conduction time；
Second determines submodule 722, and the change being configured to the carried charge according to capacitor plate determines the amplitude of vibrating diaphragm.
In one embodiment, second determines that submodule 722 is also configured to:
Calculate according to following equation and determine the amplitude of vibrating diaphragm:
A = ϵ S U 4 πkQ 1 - ϵ S U 4 πkQ 2
Wherein, A is the amplitude of vibrating diaphragm, and S is that the right opposite of the first pole plate of capacitor and the second pole plate amasss, and U is capacitor Both end voltage, Q1It is the first pole plate carried charge of capacitor plate, Q when being in the first vibration position2It is that the first pole plate is in second The carried charge of capacitor plate during vibration position, ε, π and k are respectively constant.
In one embodiment, as shown in Figure 10, detection module 71, it may include:
Detection sub-module 711, is configured with Hall element sensing capacitor, power supply, current detection module series connection Connect the electric current in the loop formed；Or
As shown in figure 11, including: the 3rd determines submodule 712, is configured to detection series connection resistance two ends in the loop Voltage, electric current be determined according to the following equation:
I=U/R
Wherein, I is electric current, and R is resistance, and U is the voltage at R two ends.
In one embodiment, as shown in figure 12, the first adjusting module 73, it may include:
Adjust submodule 731, be configured to determine that when amplitude exceeds safety range, reduce the output of intelligent power amplifier Signal, makes amplitude without departing from safety range.
The said apparatus of disclosure embodiment, by measuring the real amplitude of vibrating diaphragm in real time and real according to the amplitude recorded Time adjust intelligent power amplifier output signal.Therefore, even if diaphragm materials occurs aging, also can accurately make feedback, subtract Few error.
Disclosure embodiment also provides for the adjusting apparatus of a kind of speaker amplitude, including:
Processor；
For storing the memorizer of processor executable；
Wherein, described processor is configured to:
Electric current in the loop that sensing capacitor, power supply, current detection module are connected in series to form, wherein, described electric capacity First pole plate of device is arranged on the surface of vibrating diaphragm, and the second pole plate of described capacitor and the first pole plate at a distance, are arranged Surface/underface at the first pole plate；
The amplitude of described vibrating diaphragm is determined according to described electric current；
Amplitude according to described vibrating diaphragm adjusts the output signal of intelligent power amplifier.
Above-mentioned processor is also configured to
Output frequency according to described intelligent power amplifier, voltage/current, determine described output frequency, voltage/current Reference amplitude corresponding in the model pre-build；
Determine when described reference amplitude and the described amplitude determined are inconsistent, the reference amplitude in described model is adjusted to The described amplitude determined.
Above-mentioned processor is also configured to
The carried charge of pole plate be determined according to the following equation:
Q=It
Wherein, Q is the carried charge of pole plate, and I is electric current, and t is conduction time；
The change of the carried charge according to described capacitor plate determines the amplitude of described vibrating diaphragm.
Above-mentioned processor is also configured to
Calculate according to following equation and determine the amplitude of vibrating diaphragm:
A = ϵ S U 4 πkQ 1 - ϵ S U 4 πkQ 2
Wherein, A is the amplitude of vibrating diaphragm, and S is that the right opposite of the first pole plate of capacitor and the second pole plate amasss, and U is capacitor Both end voltage, Q1It is the first pole plate carried charge of capacitor plate, Q when being in the first vibration position2It is that the first pole plate is in second The carried charge of capacitor plate during vibration position, ε, π and k are respectively constant.
Above-mentioned processor is also configured to
Electric current in the loop that use Hall element sensing capacitor, power supply, current detection module are connected in series to form； Or
The voltage at resistance two ends that detection is connected in described loop, is determined according to the following equation electric current:
I=U/R
Wherein, I is electric current, and R is resistance, and U is the voltage at R two ends.
Above-mentioned processor is also configured to
Determine described amplitude beyond safety range time, reduce the output signal of described intelligent power amplifier, make described in shake Width is without departing from safety range.
Figure 13 is the block diagram according to a kind of adjusting apparatus for speaker amplitude shown in an exemplary embodiment, this dress Put and be applicable to terminal unit.Such as, device 1200 can be mobile phone, computer, digital broadcast terminal, and information receiving and transmitting sets Standby, game console, tablet device, armarium, body-building equipment, personal digital assistant etc..
Device 1200 can include following one or more assembly: processes assembly 1202, memorizer 1204, power supply module 1206, multimedia groupware 1208, audio-frequency assembly 1210, the interface 1212 of input/output (I/O), sensor cluster 1214, and Communications component 1216.
Process assembly 1202 and generally control the integrated operation of device 1200, such as with display, call, data communication, The operation that camera operation and record operation are associated.Process assembly 1202 and can include that one or more processor 1220 performs Instruction, to complete all or part of step of above-mentioned method.Additionally, process assembly 1202 can include one or more mould Block, it is simple to process between assembly 1202 and other assemblies is mutual.Such as, process assembly 1202 and can include multi-media module, With facilitate multimedia groupware 1208 and process between assembly 1202 mutual.
Memorizer 1204 is configured to store various types of data to support the operation at device 1200.These data Example include on device 1200 operation any application program or the instruction of method, contact data, telephone book data, Message, picture, video etc..Memorizer 1204 can by any kind of volatibility or non-volatile memory device or they Combination realizes, such as static RAM (SRAM), Electrically Erasable Read Only Memory (EEPROM), erasable can Program read-only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory Reservoir, disk or CD.
The various assemblies that power supply module 1206 is device 1200 provide electric power.Power supply module 1206 can include power management System, one or more power supplys, and other generate, manage and distribute, with for device 1200, the assembly that electric power is associated.
The screen of one output interface of offer that multimedia groupware 1208 is included between described device 1200 and user.? In some embodiments, screen can include liquid crystal display (LCD) and touch panel (TP).If screen includes touch panel, Screen may be implemented as touch screen, to receive the input signal from user.Touch panel includes that one or more touch passes Sensor is with the gesture on sensing touch, slip and touch panel.Described touch sensor can not only sense touch or slide dynamic The border made, but also detect the persistent period relevant to described touch or slide and pressure.In certain embodiments, many Media component 1208 includes a front-facing camera and/or post-positioned pick-up head.When device 1200 is in operator scheme, such as shooting mould When formula or video mode, front-facing camera and/or post-positioned pick-up head can receive the multi-medium data of outside.Each preposition shooting Head and post-positioned pick-up head can be a fixing optical lens system or have focal length and optical zoom ability.
Audio-frequency assembly 1210 is configured to output and/or input audio signal.Such as, audio-frequency assembly 1210 includes a wheat Gram wind (MIC), when device 1200 is in operator scheme, during such as call model, logging mode and speech recognition mode, mike quilt It is configured to receive external audio signal.The audio signal received can be further stored at memorizer 1204 or via communication Assembly 1216 sends.In certain embodiments, audio-frequency assembly 1210 also includes a speaker, is used for exporting audio signal.
I/O interface 1212 provides interface, above-mentioned peripheral interface module for processing between assembly 1202 and peripheral interface module Can be keyboard, put striking wheel, button etc..These buttons may include but be not limited to: home button, volume button, start button and Locking press button.
Sensor cluster 1214 includes one or more sensor, for providing the state of various aspects to comment for device 1200 Estimate.Such as, what sensor cluster 1214 can detect device 1200 opens/closed mode, the relative localization of assembly, such as institute Stating display and keypad that assembly is device 1200, sensor cluster 1214 can also detect device 1200 or device 1,200 1 The position change of individual assembly, the presence or absence that user contacts with device 1200, device 1200 orientation or acceleration/deceleration and dress Put the variations in temperature of 1200.Sensor cluster 1214 can include proximity transducer, is configured to do not having any physics The existence of object near detection during contact.Sensor cluster 1214 can also include optical sensor, as CMOS or ccd image sense Device, for using in imaging applications.In certain embodiments, this sensor cluster 1214 can also include acceleration sensing Device, gyro sensor, Magnetic Sensor, pressure transducer or temperature sensor.
Communications component 1216 is configured to facilitate the communication of wired or wireless mode between device 1200 and other equipment.Dress Put 1200 and can access wireless network based on communication standard, such as WiFi, 2G or 3G, or combinations thereof.Exemplary at one In embodiment, broadcast singal or broadcast that communications component 1216 receives from external broadcasting management system via broadcast channel are relevant Information.In one exemplary embodiment, described communications component 1216 also includes near-field communication (NFC) module, to promote short distance Communication.Such as, can be based on RF identification (RFID) technology in NFC module, Infrared Data Association (IrDA) technology, ultra broadband (UWB) technology, bluetooth (BT) technology and other technologies realize.
In the exemplary embodiment, device 1200 can be by one or more application specific integrated circuits (ASIC), numeral Signal processor (DSP), digital signal processing appts (DSPD), PLD (PLD), field programmable gate array (FPGA), controller, microcontroller, microprocessor or other electronic components realize, be used for performing said method.
In the exemplary embodiment, a kind of non-transitory computer-readable recording medium including instruction, example are additionally provided As included the memorizer 1204 of instruction, above-mentioned instruction can have been performed said method by the processor 820 of device 1200.Example If, described non-transitory computer-readable recording medium can be ROM, random access memory (RAM), CD-ROM, tape, soft Dish and optical data storage devices etc..
A kind of non-transitory computer-readable recording medium, when the instruction in described storage medium is by the process of device 1200 When device performs so that device 1200 is able to carry out the method for adjustment of above-mentioned speaker amplitude, and described method includes:
Electric current in the loop that sensing capacitor, power supply, current detection module are connected in series to form, wherein, described electric capacity First pole plate of device is arranged on the surface of vibrating diaphragm, and the second pole plate of described capacitor and the first pole plate at a distance, are arranged Surface/underface at the first pole plate；
The amplitude of described vibrating diaphragm is determined according to described electric current；
Amplitude according to described vibrating diaphragm adjusts the output signal of intelligent power amplifier.
In one embodiment, described method may also include that
Output frequency according to described intelligent power amplifier, voltage/current, determine described output frequency, voltage/current Reference amplitude corresponding in the model pre-build；
Determine when described reference amplitude and the described amplitude determined are inconsistent, the reference amplitude in described model is adjusted to The described amplitude determined.
In one embodiment, the described amplitude determining described vibrating diaphragm according to described electric current, it may include:
The carried charge of pole plate be determined according to the following equation:
Q=It
Wherein, Q is the carried charge of pole plate, and I is electric current, and t is conduction time；
The change of the carried charge according to described capacitor plate determines the amplitude of described vibrating diaphragm.
In one embodiment, the described change according to the carried charge of described capacitor plate determines shaking of described vibrating diaphragm Width, it may include:
Calculate according to following equation and determine the amplitude of vibrating diaphragm:
A = ϵ S U 4 πkQ 1 - ϵ S U 4 πkQ 2
Wherein, A is the amplitude of vibrating diaphragm, and S is that the right opposite of the first pole plate of capacitor and the second pole plate amasss, and U is capacitor Both end voltage, Q1It is the first pole plate carried charge of capacitor plate, Q when being in the first vibration position2It is that the first pole plate is in second The carried charge of capacitor plate during vibration position, ε, π and k are respectively constant.
In one embodiment, in the loop that described sensing capacitor, power supply, current detection module are connected in series to form Electric current, it may include:
Electric current in the loop that use Hall element sensing capacitor, power supply, current detection module are connected in series to form； Or
The voltage at resistance two ends that detection is connected in described loop, is determined according to the following equation electric current:
I=U/R
Wherein, I is electric current, and R is resistance, and U is the voltage at R two ends.
In one embodiment, the described amplitude according to described vibrating diaphragm adjusts the output signal of intelligent power amplifier, can Including:
Determine described amplitude beyond safety range time, reduce the output signal of described intelligent power amplifier, make described in shake Width is without departing from safety range.
Following for disclosure device embodiment, may be used for performing method of disclosure embodiment.
Those skilled in the art, after considering description and putting into practice disclosure disclosed herein, will readily occur to its of the disclosure Its embodiment.The application is intended to any modification, purposes or the adaptations of the disclosure, these modification, purposes or Person's adaptations is followed the general principle of the disclosure and includes the undocumented common knowledge in the art of the disclosure Or conventional techniques means.Description and embodiments is considered only as exemplary, and the true scope of the disclosure and spirit are by following Claim is pointed out.
It should be appreciated that the disclosure is not limited to precision architecture described above and illustrated in the accompanying drawings, and And various modifications and changes can carried out without departing from the scope.The scope of the present disclosure is only limited by appended claim.

Claims (17)

1. a speaker, it is characterised in that include vibrating diaphragm, intelligent power amplifier, capacitor, power supply, current detection module, Wherein:
Described capacitor, power supply, current detection module are connected in series to form loop, described current detection module and described intelligence merit The input of rate amplifier connects, and the outfan of described intelligent power amplifier is connected with vibrating diaphragm；
First pole plate of described capacitor is arranged on the surface of described vibrating diaphragm, the second pole plate of described capacitor and the first pole plate phase Every a segment distance, it is arranged on surface or the underface of the first pole plate；
Current detection module, for detecting the electric current in described loop, and by the current feedback that records to intelligent power amplifier；
Intelligent power amplifier, the electric current that reception current detection module records, and the amplitude of vibrating diaphragm, root is determined according to described electric current Amplitude according to vibrating diaphragm adjusts the output signal of intelligent power amplifier.
Speaker the most according to claim 1, it is characterised in that
Described current detection module includes Hall element；
Or
Described current detection module includes resistance, voltage detection unit, wherein, described resistance, is connected in described loop；Described Voltage detection unit is connected on the two ends of described resistance respectively, for detecting the voltage at described resistance two ends.
Speaker the most according to claim 1, it is characterised in that described speaker also includes first coil and the second line Circle；
The outfan of described intelligent power amplifier connects one end of vibrating diaphragm by first coil；
The outfan of described intelligent power amplifier connects the other end of vibrating diaphragm by the second coil.
4. according to the speaker according to any one of claim 1-3, it is characterised in that described speaker also includes: calibration inspection Survey module；
Described calibration detection module is connected with described intelligent power amplifier, for detecting the output frequency of intelligent power amplifier Rate, voltage/current；
Described intelligent power amplifier is additionally operable to determine that described output frequency, voltage/current are corresponding in the model pre-build Reference amplitude, determine when described reference amplitude and the described amplitude determined are inconsistent, the reference amplitude in described model adjusted Whole for the described amplitude determined.
5. the method for adjustment of a speaker amplitude, it is characterised in that including:
Electric current in the loop that sensing capacitor, power supply, current detection module are connected in series to form, wherein, described capacitor First pole plate is arranged on the surface of vibrating diaphragm, and the second pole plate of described capacitor and the first pole plate at a distance, are arranged on Surface/the underface of one pole plate；
The amplitude of described vibrating diaphragm is determined according to described electric current；
Amplitude according to described vibrating diaphragm adjusts the output signal of intelligent power amplifier.
Method the most according to claim 5, it is characterised in that described method also includes:
Output frequency according to described intelligent power amplifier, voltage/current, determine that described output frequency, voltage/current are in advance Reference amplitude corresponding in the model first set up；
Determine when described reference amplitude and the described amplitude determined are inconsistent, it is described that the reference amplitude in described model is adjusted to The amplitude determined.
Method the most according to claim 5, it is characterised in that the described amplitude determining described vibrating diaphragm according to described electric current, Including:
The carried charge of pole plate be determined according to the following equation:
Q=It
Wherein, Q is the carried charge of pole plate, and I is electric current, and t is conduction time；
The change of the carried charge according to described capacitor plate determines the amplitude of described vibrating diaphragm.
Method the most according to claim 7, it is characterised in that the change of the described carried charge according to described capacitor plate Determine the amplitude of described vibrating diaphragm, including:
Calculate according to following equation and determine the amplitude of vibrating diaphragm:
A = ϵ S U 4 πkQ 1 - ϵ S U 4 πkQ 2
Wherein, A is the amplitude of vibrating diaphragm, and S is that the right opposite of the first pole plate of capacitor and the second pole plate amasss, and U is capacitor two ends Voltage, Q1It is the first pole plate carried charge of capacitor plate, Q when being in the first vibration position2It is that the first pole plate is in the second vibration The carried charge of capacitor plate during position, ε, π and k are respectively constant.
Method the most according to claim 5, it is characterised in that described sensing capacitor, power supply, current detection module are connected Connect the electric current in the loop formed, including:
Electric current in the loop that use Hall element sensing capacitor, power supply, current detection module are connected in series to form；Or
The voltage at resistance two ends that detection is connected in described loop, is determined according to the following equation electric current:
I=U/R
Wherein, I is electric current, and R is resistance, and U is the voltage at R two ends.
Method the most according to claim 5, it is characterised in that the described amplitude according to described vibrating diaphragm adjusts intelligent power The output signal of amplifier, including:
When determining described amplitude beyond safety range, reduce the output signal of described intelligent power amplifier, make described amplitude not Beyond safety range.
The adjusting apparatus of 11. 1 kinds of speaker amplitudes, it is characterised in that including:
Detection module, the electric current in the loop that sensing capacitor, power supply, current detection module are connected in series to form, wherein, First pole plate of described capacitor is arranged on the surface of vibrating diaphragm, the second pole plate of described capacitor and the first pole plate be separated by one section away from From, it is arranged on the surface/underface of the first pole plate；
First determines module, for determining the amplitude of described vibrating diaphragm according to described electric current；
First adjusting module, adjusts the output signal of intelligent power amplifier for the amplitude according to described vibrating diaphragm.
12. devices according to claim 11, it is characterised in that described device also includes:
Second determines module, for the output frequency according to described intelligent power amplifier, voltage/current, determines described output The reference amplitude that frequency, voltage/current are corresponding in the model pre-build；
Second adjusting module, during for determining that described reference amplitude and the described amplitude determined are inconsistent, by described model Reference amplitude is adjusted to the described amplitude determined.
13. devices according to claim 11, it is characterised in that described first determines module, including:
First determines submodule, for the carried charge of pole plate is determined according to the following equation:
Q=It
Wherein, Q is the carried charge of pole plate, and I is electric current, and t is conduction time；
Second determines submodule, and the change for the carried charge according to described capacitor plate determines the amplitude of described vibrating diaphragm.
14. devices according to claim 13, it is characterised in that described second determines that submodule is additionally operable to:
Calculate according to following equation and determine the amplitude of vibrating diaphragm:
A = ϵ S U 4 πkQ 1 - ϵ S U 4 πkQ 2
Wherein, A is the amplitude of vibrating diaphragm, and S is that the right opposite of the first pole plate of capacitor and the second pole plate amasss, and U is capacitor two ends Voltage, Q1It is the first pole plate carried charge of capacitor plate, Q when being in the first vibration position2It is that the first pole plate is in the second vibration The carried charge of capacitor plate during position, ε, π and k are respectively constant.
15. devices according to claim 11, it is characterised in that described detection module, including:
Detection sub-module, for using what Hall element sensing capacitor, power supply, current detection module be connected in series to form to return Electric current in road；Or
3rd determines submodule, for the voltage at the resistance two ends that detection is connected in described loop, is determined according to the following equation Electric current:
I=U/R
Wherein, I is electric current, and R is resistance, and U is the voltage at R two ends.
16. devices according to claim 11, it is characterised in that described first adjusting module, including:
Adjust submodule, when being used for determining described amplitude beyond safety range, reduce the output letter of described intelligent power amplifier Number, make described amplitude without departing from safety range.
The adjusting apparatus of 17. 1 kinds of speaker amplitudes, it is characterised in that including:
Processor；
For storing the memorizer of processor executable；
Wherein, described processor is configured to:
Electric current in the loop that sensing capacitor, power supply, current detection module are connected in series to form, wherein, described capacitor First pole plate is arranged on the surface of vibrating diaphragm, and the second pole plate of described capacitor and the first pole plate at a distance, are arranged on Surface/the underface of one pole plate；
The amplitude of described vibrating diaphragm is determined according to described electric current；
Amplitude according to described vibrating diaphragm adjusts the output signal of intelligent power amplifier.
CN201610639711.2A 2016-08-05 2016-08-05 Speaker and the method for adjustment of speaker amplitude Pending CN106101934A (en)

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CN106961652A (en) * 2017-03-03 2017-07-18 广东欧珀移动通信有限公司 Electronic installation and the detection method based on distance
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CN108430004A (en) * 2018-04-16 2018-08-21 维沃移动通信有限公司 A kind of loud speaker amplitude regulating device, adjusting method and mobile terminal
CN108632708A (en) * 2017-03-23 2018-10-09 展讯通信（上海）有限公司 Loudspeaker output control method and system
CN109257683A (en) * 2017-07-16 2019-01-22 新唐科技股份有限公司 Audio system and method for loudspeaker amplitude controlling
CN109270352A (en) * 2018-08-23 2019-01-25 维沃移动通信有限公司 A kind of amplitude adjusting method and sounding device
CN112438052A (en) * 2018-08-07 2021-03-02 三星电子株式会社 Non-linear control of a loudspeaker system with a current source amplifier
CN113132868A (en) * 2021-04-23 2021-07-16 维沃移动通信有限公司 Speaker, amplitude adjusting method, amplitude adjusting device, and electronic apparatus
CN115022788A (en) * 2022-08-03 2022-09-06 杭州兆华电子股份有限公司 Vibrating diaphragm tension device for controlling measuring microphone and vibrating diaphragm method thereof

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Cited By (15)

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Publication number Priority date Publication date Assignee Title
CN106658289A (en) * 2016-11-30 2017-05-10 努比亚技术有限公司 Adaptive adjusting device and method for loudspeaker
CN106658289B (en) * 2016-11-30 2019-07-30 努比亚技术有限公司 A kind of loudspeaker self-adaptive regulating and method
CN106961652A (en) * 2017-03-03 2017-07-18 广东欧珀移动通信有限公司 Electronic installation and the detection method based on distance
CN108632708B (en) * 2017-03-23 2020-04-21 展讯通信（上海）有限公司 Loudspeaker output control method and system
CN108632708A (en) * 2017-03-23 2018-10-09 展讯通信（上海）有限公司 Loudspeaker output control method and system
CN109257683A (en) * 2017-07-16 2019-01-22 新唐科技股份有限公司 Audio system and method for loudspeaker amplitude controlling
CN107682551A (en) * 2017-09-30 2018-02-09 努比亚技术有限公司 A kind of control method of intelligent power output amplification, terminal and storage medium
CN107682551B (en) * 2017-09-30 2021-02-19 努比亚技术有限公司 Control method, terminal and storage medium of intelligent power amplifier
CN108430004B (en) * 2018-04-16 2020-09-25 维沃移动通信有限公司 Loudspeaker amplitude adjusting device, adjusting method and mobile terminal
CN108430004A (en) * 2018-04-16 2018-08-21 维沃移动通信有限公司 A kind of loud speaker amplitude regulating device, adjusting method and mobile terminal
CN112438052A (en) * 2018-08-07 2021-03-02 三星电子株式会社 Non-linear control of a loudspeaker system with a current source amplifier
CN109270352A (en) * 2018-08-23 2019-01-25 维沃移动通信有限公司 A kind of amplitude adjusting method and sounding device
CN113132868A (en) * 2021-04-23 2021-07-16 维沃移动通信有限公司 Speaker, amplitude adjusting method, amplitude adjusting device, and electronic apparatus
CN115022788A (en) * 2022-08-03 2022-09-06 杭州兆华电子股份有限公司 Vibrating diaphragm tension device for controlling measuring microphone and vibrating diaphragm method thereof
CN115022788B (en) * 2022-08-03 2022-11-25 杭州兆华电子股份有限公司 Vibrating diaphragm tension device for controlling measuring microphone and vibrating diaphragm method thereof

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Application publication date: 20161109