CN114401476A - Crossover type loudspeaker, control method thereof and electronic equipment - Google Patents
Crossover type loudspeaker, control method thereof and electronic equipment Download PDFInfo
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- CN114401476A CN114401476A CN202210078730.8A CN202210078730A CN114401476A CN 114401476 A CN114401476 A CN 114401476A CN 202210078730 A CN202210078730 A CN 202210078730A CN 114401476 A CN114401476 A CN 114401476A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 63
- 230000005236 sound signal Effects 0.000 claims abstract description 58
- 230000000694 effects Effects 0.000 abstract description 14
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
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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
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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
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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
- H04R9/02—Details
Abstract
The present disclosure provides a crossover type speaker, a control method thereof, and an electronic device, the speaker including: a cavity; the moving iron unit and the moving coil unit are arranged in the cavity; the frequency divider is respectively connected with the moving iron unit and the moving coil unit and used for dividing the sound signal into a first signal and a second signal according to a preset frequency threshold value after receiving the sound signal, outputting the first signal to the moving iron unit and outputting the second signal to the moving coil unit; the first signal is a part of the sound signal, the frequency of which is greater than or equal to a preset frequency threshold, and the second signal is a part of the sound signal, the frequency of which is less than the preset frequency threshold. This is disclosed through set up simultaneously moving iron unit and moving coil unit in the cavity to utilize the frequency divider to realize the separation of different frequency channel sounds, make the sound of relative high frequency send from the moving iron unit, the sound of relative low frequency sends from the moving coil unit, utilizes the good high frequency ductility of moving iron unit to promote the tone quality effect of speaker module, satisfies the demand of consumer to high tone quality.
Description
Technical Field
The present disclosure relates to the field of sound technologies, and in particular, to a crossover speaker, a control method thereof, and an electronic device.
Background
Along with the high-speed development of electronic products, the requirement of consumers on the tone quality of electronic products is also higher and higher, and in current consumer electronic products such as mobile phones and flat panels, the traditional moving coil unit is usually used as an internal sounding module of an equipment loudspeaker, but based on the characteristics of the structure, materials and the like of the moving coil unit, the tone quality is further improved to a limited extent, and the requirement of the users on the high tone quality cannot be met.
Disclosure of Invention
An object of the embodiments of the present disclosure is to provide a crossover speaker, a control method thereof, and an electronic device, so as to solve a problem that a speaker in the prior art cannot output high-quality sound.
The embodiment of the disclosure adopts the following technical scheme: a crossover speaker, comprising: a cavity; the moving iron unit and the moving coil unit are arranged in the cavity; the frequency divider is respectively connected with the moving iron unit and the moving coil unit and is configured to divide a sound signal into a first signal and a second signal according to a preset frequency threshold value after receiving the sound signal, output the first signal to the moving iron unit and output the second signal to the moving coil unit; the first signal is a part of the sound signal, the frequency of which is greater than or equal to the preset frequency threshold, and the second signal is a part of the sound signal, the frequency of which is less than the preset frequency threshold.
In some embodiments, the first face of the cavity is provided with a sound outlet; the sound outlet of the moving iron unit is opposite to the sound outlet of the cavity, so that sound waves generated by the moving iron unit are emitted from the sound outlet of the moving iron unit and then directly emitted from the sound outlet of the cavity; the sound outlet of the moving coil unit is opposite to the second surface of the cavity, and the second surface is a surface adjacent to the first surface and vertical to the first surface, so that sound waves generated by the moving coil unit are emitted from the sound outlet of the moving coil unit and then are reflected by the second surface and then are emitted from the sound outlet of the cavity.
In some embodiments, a distance between the moving iron unit and the moving coil unit is within a preset range, wherein a lower limit of the preset range is not 0.
In some embodiments, further comprising: a power amplifier configured to amplify an input sound signal; the divider is configured to divide the amplified sound signal.
In some embodiments, further comprising: an audio codec configured to convert an input digital sound signal into an analog sound signal; the divider is configured to divide the analog sound signal.
In some embodiments, the preset threshold is any frequency value between 800 hz and 3000 hz.
The embodiment of the present disclosure further provides an electronic device, which at least includes the crossover type speaker.
The embodiment of the present disclosure further provides a method for controlling the crossover type speaker, which includes: receiving a sound signal; dividing the sound signal into a first signal and a second signal through a frequency divider, outputting the first signal to a moving iron unit, and outputting the second signal to a moving coil unit; the first signal is a part of the sound signal, the frequency of which is greater than or equal to a preset frequency threshold, and the second signal is a part of the sound signal, the frequency of which is less than the preset frequency threshold.
In some embodiments, before the dividing the sound signal into a first signal and a second signal by a frequency divider, and outputting the first signal to the moving-iron unit and the second signal to the moving-coil unit, the method further includes: and amplifying the sound signal.
In some embodiments, the receiving the sound signal comprises: the received digital sound signal is converted into an analog sound signal.
The beneficial effects of this disclosed embodiment lie in: through set up the moving iron unit simultaneously in the cavity and move the coil unit to utilize the frequency divider to realize the separation of different frequency channel sounds, make the sound of relative high frequency send from the moving iron unit, the sound of relative low frequency sends from the coil unit, utilizes the good high frequency ductility of moving iron unit to promote the tone quality effect of speaker module, satisfies the demand of consumer to high tone quality.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a crossover speaker according to a first embodiment of the present disclosure;
fig. 2 is a schematic top view of a crossover speaker according to a first embodiment of the present disclosure;
FIG. 3 is a schematic cross-sectional view of a moving iron unit according to a first embodiment of the present disclosure;
fig. 4 is a flowchart of a method for controlling a crossover speaker according to a third embodiment of the present disclosure.
Detailed Description
Various aspects and features of the disclosure are described herein with reference to the drawings.
It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Other modifications will occur to those skilled in the art within the scope and spirit of the disclosure.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.
These and other characteristics of the present disclosure will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.
It should also be understood that, although the present disclosure has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the disclosure, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure that may be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as not to obscure the present disclosure with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.
The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.
Along with the high-speed development of electronic products, the requirement of consumers on the tone quality of electronic products is also higher and higher, and in current consumer electronic products such as mobile phones and flat panels, the traditional moving coil unit is usually used as an internal sounding module of an equipment loudspeaker, but based on the characteristics of the structure, materials and the like of the moving coil unit, the tone quality is further improved to a limited extent, and the requirement of the users on the high tone quality cannot be met.
In order to improve the sound quality of the speaker module, a schematic structural diagram of the speaker is shown in fig. 1, and the speaker mainly includes a cavity 10, a moving iron unit 20 and a moving coil unit 30 that are disposed inside the cavity 10, and a frequency divider (not shown in the figure); the frequency divider is connected with the moving iron unit 20 and the moving coil unit 30 respectively, and after receiving the sound signal, the frequency divider performs frequency division processing on the sound signal according to a preset frequency threshold value to form a first signal and a second signal; specifically, the first signal is a portion of the sound signal having a frequency greater than or equal to a preset frequency threshold, the second signal is a portion of the sound signal having a frequency less than the preset frequency threshold, and the first signal and the second signal may also be respectively denoted as a high-frequency signal and a low-frequency signal; the frequency divider outputs the first signal to the moving iron unit after frequency division processing, outputs the second signal to the moving coil unit to as the high pitch unit through the moving iron unit, realize better high frequency effect based on its good high frequency ductility, use the moving coil unit as the bass unit simultaneously, reach more stable true low frequency output effect.
Fig. 2 shows a schematic top view of the crossover speaker of the present embodiment. As can be seen from fig. 2, the first surface of the cavity 10 is provided with a sound outlet 11, which is mainly used for transmitting sound generated by the moving iron unit 20 and the moving coil unit 30 inside the cavity to the outside, and the sound outlet can be provided on any surface of the cavity 10 according to actual requirements. In general, the cavity 10 is a cube with a cavity, the cube has a surface with a narrow width and a long length, the surface can be selected as a first surface, and the first surface is provided with a sound outlet 11, so as to ensure that when the speaker module is mounted to the bottom of an electronic device, especially a mobile phone device, a sound outlet position of the speaker module just corresponds to a lower end surface of the mobile phone device, so as to realize sound outlet at the bottom of the mobile phone.
Furthermore, the moving iron unit 20 and the moving coil unit 21 are also provided with sound outlets, and the sound outlet 21 of the moving iron unit 20 is directly opposite to the sound outlet 11 of the cavity 10, so as to realize a positive sound-emitting manner of the moving iron unit 20, that is, the sound waves generated by the moving iron unit 20 are emitted from the sound outlet 21 of the moving iron unit 20 and then directly emitted from the sound outlet 11 of the cavity 10, and the sound is not refracted, reflected and the like in the transmission process to cause sound loss. The sound outlet 31 of the moving coil unit 30 is disposed opposite to the second surface of the cavity 10, the second surface is a surface adjacent to the first surface and perpendicular to the first surface, the upper surface of the cavity 10 shown in fig. 2 is the second surface, the sound outlet 31 of the moving coil unit 30 is disposed opposite to the upper surface of the cavity 10, and a side sound emitting manner of the moving coil unit 30 is realized, that is, sound waves generated by the moving coil unit 30 are emitted from the sound outlet 31 of the moving coil unit 30, reflected by the second surface, and then emitted from the sound outlet 11 of the cavity 10.
Fig. 3 shows a schematic cross-sectional structure diagram of the moving iron unit 20, which mainly includes a sound outlet 21, a diaphragm 22, a driving rod 23, a magnet 24, a voice coil 25, an armature 26, and a square iron 27, wherein when a current signal is input into the voice coil 25, the armature 26 generates magnetism and vibrates up and down in a magnetic field, so that the driving rod 23 drives the diaphragm 22 to vibrate to generate sound. On the one hand, the U-shaped armature 26 of the moving-iron unit 20 is similar to a lever structure, one end of the U-shaped armature is fixed on the square iron 27, and the other end of the U-shaped armature is connected with the driving rod 23 in a floating way, so that the slight movement of the armature 26 in the magnetic field is amplified at the tail end, and then the amplified signal is transmitted to the diaphragm 22, so that the moving-iron unit 20 has higher sensitivity. On the other hand, the dome portion of the diaphragm 22 is mainly responsible for the generation of high-frequency sound waves, and the dome material of the moving-iron unit 20 is a metal material, which has higher rigidity, so that the split vibration generated during vibration is very small, so that the moving-iron unit 20 has good high-frequency extensibility. Therefore, the movable iron unit 20 is selected as the treble unit in the present embodiment, so that the high frequency effect of the speaker can be greatly improved.
Meanwhile, the moving iron unit 20 enables the high pitch not to be attenuated in the transmission process through the positive sound emitting mode, so as to achieve good sound effect, and the volume of the moving iron unit 20 is small, so that the size of the cavity 10 is not affected even if the sound outlet 21 of the moving iron unit 20 is arranged opposite to the sound outlet 11 of the cavity 10. The sound outlet 31 of the moving coil unit 30 is relatively large in size, and if the sound outlet is set to be a positive sound outlet mode, the size of the cavity 10 needs to be correspondingly increased, and under the trend that the volume of the electronic device gradually becomes smaller, the moving coil unit 30 is set to be a side sound outlet mode, which is more beneficial to reducing the volume of the cavity 10, and the small-volume design of the electronic device is realized. In addition, under the condition that the volume of the internal cavity of the cavity 10 is not changed, because the volume of the moving iron unit 20 is smaller, the space occupied by the moving iron unit 20 in the cavity is also reduced, the space occupied by the moving coil unit 30 in the cavity is improved to a certain extent, and further the low-frequency performance of the moving coil unit 30 is improved, so that the loudspeaker obtains a more excellent sound effect.
In some embodiments, since the moving iron unit 20 and the moving coil unit 30 share the sound outlet 11 of one cavity, when the moving iron unit 20 and the moving coil unit 30 are disposed in the cavity 10, the distance between the moving iron unit 20 and the moving coil unit 30 can be limited to be within a preset range, and an upper limit value and a lower limit value of the preset range can be adjusted according to the size of the cavity, the models of the moving iron unit 20 and the moving coil unit 30, and an actual sound emission condition of the speaker, but it should be noted that the lower limit of the preset range cannot be 0, that is, the moving iron unit 20 and the moving coil unit 30 cannot be in direct contact, so that the two are prevented from affecting each other to reduce a sound effect when the speaker emits sound. In actual manufacturing, the moving iron unit 20 and the moving coil unit 30 can be as close as possible, that is, the distance between the moving iron unit and the moving coil unit is as small as possible under the condition that the moving iron unit and the moving coil unit do not affect each other, so that the sound emitted through the sound outlet is more concentrated, and the sound effect is better.
It should be noted that the high frequency signal and the low frequency signal proposed in the present embodiment refer to a high frequency and a low frequency with respect to a preset frequency threshold. When a loudspeaker is actually manufactured, the specific value of the preset frequency threshold used when the frequency divider performs frequency division processing can be adjusted according to the models of the moving iron unit 20 and the moving coil unit 30 and the actual sound production condition of the loudspeaker, generally, high-frequency sound heard by human ears generally refers to sound above 3000 hertz, low-frequency sound refers to sound below 800 hertz, and sound between 800 and 3000 hertz can be called intermediate-frequency sound, and the intermediate-frequency sound can achieve a good effect no matter the moving iron unit 20 or the moving coil unit 30 is used for sound output, so that the preset frequency threshold can be set to any frequency value within 800 to 3000 hertz, sound with frequency higher than the preset frequency threshold is emitted through the moving iron unit 20, and sound with frequency lower than the preset frequency threshold is emitted through the moving coil unit 30.
In some embodiments, the crossover speaker may further include a Power Amplifier (PA) to amplify the input sound signal, so as to ensure that the signal after being frequency-divided by the frequency divider can achieve a good sound effect for the moving-iron unit 20 and the moving-coil unit 30. In addition, the crossover speaker may further include a audio CODEC (CODEC), which is mainly configured to convert an input digital sound signal into an analog sound signal, and in particular, perform digital-to-analog conversion on the digital sound signal output by the electronic device, so as to implement sound generation of the moving iron unit 20 and the moving coil unit 30 based on the analog sound signal after frequency division.
This embodiment is through setting up the moving-iron unit and moving coil unit simultaneously in the cavity to utilize the frequency divider to realize the separation of different frequency channel sounds, make the sound of relative high frequency send from the moving-iron unit, the sound of relative low frequency sends from the moving coil unit, utilizes the good high frequency ductility of moving-iron unit to promote the tone quality effect of speaker module, satisfies the consumer to the demand of high tone quality.
The second embodiment of the present disclosure provides an electronic device, which may be a mobile terminal such as a mobile phone and a tablet computer, and at least includes the crossover speaker provided by the first embodiment of the present disclosure, and through a moving iron unit and a moving coil unit in the crossover speaker, the sound of relatively high frequency is emitted from the moving iron unit, and the sound of relatively low frequency is emitted from the moving coil unit, so that the sound quality effect of the speaker module is improved by utilizing the good high frequency ductility of the moving iron unit, and the requirement of a consumer on high sound quality is met.
It should be understood that the electronic device should further include a processor, an audio codec, and other devices for outputting a sound signal, and may further include other devices for implementing functions of the electronic device itself, and the embodiment is not particularly limited.
The third embodiment of the present disclosure provides a method for controlling a crossover speaker in the first embodiment of the present disclosure, and the flowchart is shown in fig. 4, and mainly includes steps S10 and S20:
s10, receiving the sound signal;
s20, dividing the sound signal into a first signal and a second signal through a frequency divider, outputting the first signal to the moving iron unit, and outputting the second signal to the moving coil unit; the first signal is a part of the sound signal, the frequency of which is greater than or equal to a preset frequency threshold, and the second signal is a part of the sound signal, the frequency of which is less than the preset frequency threshold.
In some embodiments, before the sound signal is divided into a first signal and a second signal by the frequency divider, the first signal is output to the moving-iron unit, and the second signal is output to the moving-coil unit, the method further includes: and amplifying the sound signal.
In some embodiments, receiving an acoustic signal comprises: the received digital sound signal is converted into an analog sound signal.
This embodiment is through setting up the moving-iron unit and moving coil unit simultaneously in the cavity to utilize the frequency divider to realize the separation of different frequency channel sounds, make the sound of relative high frequency send from the moving-iron unit, the sound of relative low frequency sends from the moving coil unit, utilizes the good high frequency ductility of moving-iron unit to promote the tone quality effect of speaker module, satisfies the consumer to the demand of high tone quality.
While the present disclosure has been described in detail with reference to the embodiments, the present disclosure is not limited to the specific embodiments, and those skilled in the art can make various modifications and alterations based on the concept of the present disclosure, and the modifications and alterations should fall within the scope of the present disclosure as claimed.
Claims (10)
1. A crossover speaker, comprising:
a cavity;
the moving iron unit and the moving coil unit are arranged in the cavity;
the frequency divider is respectively connected with the moving iron unit and the moving coil unit and is configured to divide a sound signal into a first signal and a second signal according to a preset frequency threshold value after receiving the sound signal, output the first signal to the moving iron unit and output the second signal to the moving coil unit;
the first signal is a part of the sound signal, the frequency of which is greater than or equal to the preset frequency threshold, and the second signal is a part of the sound signal, the frequency of which is less than the preset frequency threshold.
2. The crossover speaker of claim 1, wherein the first face of the cavity is provided with a sound outlet;
the sound outlet of the moving iron unit is opposite to the sound outlet of the cavity, so that sound waves generated by the moving iron unit are emitted from the sound outlet of the moving iron unit and then directly emitted from the sound outlet of the cavity;
the sound outlet of the moving coil unit is opposite to the second surface of the cavity, and the second surface is a surface adjacent to the first surface and vertical to the first surface, so that sound waves generated by the moving coil unit are emitted from the sound outlet of the moving coil unit and then are reflected by the second surface and then are emitted from the sound outlet of the cavity.
3. The crossover speaker of claim 1, wherein a distance between the moving iron unit and the moving coil unit is within a preset range, wherein a lower limit of the preset range is not 0.
4. The crossover speaker of claim 1, further comprising:
a power amplifier configured to amplify an input sound signal;
the divider is configured to divide the amplified sound signal.
5. The crossover speaker of claim 1, further comprising:
an audio codec configured to convert an input digital sound signal into an analog sound signal;
the divider is configured to divide the analog sound signal.
6. A crossover speaker as claimed in claim 1, wherein the predetermined threshold is any frequency value between 800 hz and 3000 hz.
7. An electronic device characterized in that it comprises at least a crossover speaker according to any one of claims 1 to 6.
8. A method of controlling a crossover speaker as defined in any one of claims 1 to 6, comprising:
receiving a sound signal;
dividing the sound signal into a first signal and a second signal through a frequency divider, outputting the first signal to a moving iron unit, and outputting the second signal to a moving coil unit;
the first signal is a part of the sound signal, the frequency of which is greater than or equal to a preset frequency threshold, and the second signal is a part of the sound signal, the frequency of which is less than the preset frequency threshold.
9. The control method according to claim 8, wherein before the dividing the sound signal into a first signal and a second signal by a frequency divider and outputting the first signal to the moving-iron unit and the second signal to the moving-coil unit, the method further comprises:
and amplifying the sound signal.
10. The control method according to claim 8 or 9, wherein the receiving a sound signal includes:
the received digital sound signal is converted into an analog sound signal.
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| CN202210078730.8A CN114401476A (en) | 2022-01-24 | 2022-01-24 | Crossover type loudspeaker, control method thereof and electronic equipment |
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| CN202210078730.8A CN114401476A (en) | 2022-01-24 | 2022-01-24 | Crossover type loudspeaker, control method thereof and electronic equipment |
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