CN108174320A - A kind of adaptive duct active noise reduction earphone and adaptive duct active denoising method - Google Patents
A kind of adaptive duct active noise reduction earphone and adaptive duct active denoising method Download PDFInfo
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- CN108174320A CN108174320A CN201810084308.7A CN201810084308A CN108174320A CN 108174320 A CN108174320 A CN 108174320A CN 201810084308 A CN201810084308 A CN 201810084308A CN 108174320 A CN108174320 A CN 108174320A
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
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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
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
Abstract
The present invention discloses a kind of adaptive duct active noise reduction earphone and adaptive duct active denoising method, earphone includes loud speaker, Audio Input Modules, microphone, computing module and noise reduction process module, the Audio Input Modules, computing module, microphone and loud speaker are connect with noise reduction process module, and the microphone is positioned over the ante-chamber of loud speaker.Noise-reduction method includes the following steps：1）Artitificial ear obtains third frequency response curve and third phase curve to calibrating audio collection；2）Microphone simultaneously acquires calibration audio and peripheral sound, obtains the first frequency response curve, first phase curve and second phase curve；3）Computing module is according to by step 1）With step 2）The data and fixed algorithm operation obtained obtain filter coefficient；4）Noise reduction process module carries out noise reduction process using filter coefficient to audio.The present invention adapts to the noise reduction requirement of various different ducts, meets the noise reduction demand of user, gives the good experience sense of user.
Description
Technical field
The present invention relates to noise reduction technology field, more particularly to a kind of adaptive duct active noise reduction earphone and adaptive duct
Active denoising method.
Background technology
Earphone has been obtained for extensive use in the ordinary live and work of people, earphone in addition to being used for appreciating music,
Except the function of amusement, isolation noise is also widely used in, keeps relatively quiet environment, but earphone is to low-frequency noise
Noise isolating effect and ability be limited.
The method that active noise reduction techniques use is to generate a signal opposite with outside noise amplitude same phase to support
Disappear into the noise of earphone.But the active noise reduction techniques used in earphone at present all only have constant noise reduction curve, due to every
Personal duct space is all unique, so everyone sensory difference of noise reduction is very big, it is meant that for certain people
The noise cancelling headphone felt good, it is very poor or at all without noise reduction in other people noise reductions.How for everyone
The most strong noise cancelling headphone of duct design flexibility is always the first problem of noise cancelling headphone design.
Invention content
The technical problem to be solved by the present invention is to, for the above-mentioned prior art in deficiency, a kind of adaptive duct is provided
Active noise reduction earphone and adaptive duct active denoising method adapt to the noise reduction requirement of various different ducts, meet user
Noise reduction demand, give the good experience sense of user.
In order to solve the above technical problems, the technical scheme is that：
A kind of active noise reduction earphone of adaptive duct, including：
Loud speaker, for playing calibration audio and the audio after noise reduction process；
Audio Input Modules, for calibration audio and audio to be interacted, inputted with Intelligent terminal data；
Microphone is acquired calibration audio and is converted into the first audio signal, peripheral sound is acquired and is converted into
Second audio signal, the microphone are positioned over the ante-chamber of loud speaker；
First audio signal is converted into the first parameter by computing module, and the second audio signal is converted into the second parameter, cooperation storage
It is stored in its internal third parameter and fixed algorithm operation obtains noise reduction parameters；And
Noise reduction process module carries out noise reduction process according to the noise reduction parameters that computing module is calculated to audio；
The Audio Input Modules, computing module, microphone and loud speaker are connect with noise reduction process module, and the microphone is put
It is placed in the ante-chamber of loud speaker.
As a preferred embodiment, the noise reduction process module includes wave filter, and the noise reduction parameters are filter coefficient.
As a preferred embodiment, first parameter is acquired the obtain first frequency for microphone to calibration audio
Ring curve and first phase curve.
As a preferred embodiment, second parameter is acquired peripheral sound for microphone the second phase obtained
Position curve.
As a preferred embodiment, the third parameter is acquired the third obtained frequency for artitificial ear to calibration audio
Ring curve and third phase curve.
As a preferred embodiment, the fixed algorithm includes the first calculation formula, the second calculation formula and third calculating
Formula,
First calculation formula includes frequency response error curve calculation formula and phase error curve calculation formula；
The frequency response error curve calculation formula is：EAn=An-An*, wherein, EAn is frequency response error curve, and An is third frequency response
Curve, An* are the first frequency response curve；
The phase error curve calculation formula is：EBn=Bn-Bn*, wherein, EBn is phase error curve, and Bn is third phase
Curve, Bn* are first phase curve；
Second calculation formula is：P=EAn * SIN (θ-EBn), wherein, P is the first frequency response curve and first phase curve
Compensated curve, θ be second phase curve；
The third calculation formula is：F=-（C+P）, wherein, F is filter coefficient, and C is the first frequency response curve and first phase
Curve.
As a preferred embodiment, the microphone is reaction type microphone.
A kind of active denoising method of adaptive duct, it is described based on artitificial ear and active noise reduction earphone as described above
Active denoising method includes the following steps：
1）Calibration audio is sent to loud speaker and played back by Audio Input Modules, and artitificial ear is acquired calibration audio, obtains
It is stored in computing module to third frequency response curve and third phase curve, and by third frequency response curve and third phase curve；
2）Microphone is made to be placed in the cavity that loud speaker ante-chamber and human antrum auris are collectively formed, Audio Input Modules will calibrate audio
It is sent to loud speaker to play back, microphone is simultaneously acquired calibration audio and peripheral sound and is converted into the first audio letter
Number and the second audio signal, computing module the first audio signal and the second audio signal are converted into the first frequency response curve, first
Phase curve and second phase curve；
3）Computing module passes through by step 1）The third frequency response curve and third phase curve that obtain, by step 2）First obtained
Frequency response curve, first phase curve and second phase curve and the fixation algorithm cooperation operation being built in computing module obtain
Filter coefficient, and filter coefficient is sent to the wave filter of noise reduction process module；
4）Audio is sent to noise reduction process module by Audio Input Modules, and the wave filter use of noise reduction process module is by step 3）
To filter coefficient noise reduction process is filtered to audio, the audio after filtered noise reduction process is then sent to loud speaker
It plays back.
As a preferred embodiment, step 3）In the measuring method of filter coefficient include the following steps：
1）Computing module passes through third frequency response curve, third phase curve, the first frequency response curve, first phase curve and the first meter
It calculates formula cooperation operation and obtains frequency response error curve and phase error curve；
2）Computing module is by second phase curve, the second calculation formula and by step 1）Obtained frequency response error curve and phase
Position error curve cooperation operation obtains the compensated curve of the first frequency response curve and first phase curve；
3）Computing module passes through by the first frequency response curve, first phase curve, third computing module and by step 3）It obtains
The cooperation operation of the compensated curve of first frequency response curve and first phase curve obtains filter coefficient.
As a preferred embodiment, the frequency range of the calibration audio is：50-500HZ.
The beneficial effects of the invention are as follows：Pass through loud speaker, microphone, Audio Input Modules, noise reduction process module and operation
The cooperation of module is realized and carries out noise reduction process noise reduction process to audio according to the noise reduction parameters that computing module is calculated, can fit
The noise reduction requirement of various different ducts is answered, reaches best noise reduction, meets the noise reduction demand of user, is brought for user better
Experience.
Description of the drawings
Fig. 1 is the assembling assumption diagram of embodiments of the present invention；
Fig. 2 is the active noise reduction flow frame diagram of the present invention；
Fig. 3 is the measuring and calculating flow frame diagram of the filter coefficient of the present invention.
In figure：1- loud speakers, 2- Audio Input Modules, 3- microphones, 4- computing modules, 5- noise reduction process modules.
Specific embodiment
The structural principle and operation principle of the present invention are described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of active noise reduction earphone of adaptive duct, including：
Loud speaker 1, for playing calibration audio and the audio after noise reduction process；
Audio Input Modules 2, for calibration audio and audio to be interacted, inputted with Intelligent terminal data；
Microphone 3 is acquired calibration audio and is converted into the first audio signal, peripheral sound is acquired and is converted into
Second audio signal, the microphone 3 are positioned over the ante-chamber of loud speaker 1；
First audio signal is converted into the first parameter by computing module 4, and the second audio signal is converted into the second parameter, cooperation
It is stored in its internal third parameter and fixed algorithm operation obtains noise reduction parameters；And
Noise reduction process module 5 carries out noise reduction process according to the noise reduction parameters that computing module 4 is calculated to audio；
The Audio Input Modules 2, computing module 4, microphone 3 and loud speaker 1 are connect with noise reduction process module 5, the wheat
Gram wind 3 is positioned over the ante-chamber of loud speaker 1.The noise reduction process module 5 includes wave filter, and the noise reduction parameters are wave filter system
Number.First parameter is acquired the first frequency response curve obtained and first phase curve for microphone 3 to calibration audio.
Second parameter is acquired peripheral sound for microphone 3 the second phase curve obtained.The third parameter is behaved
The third frequency response curve and third phase curve that work ear is acquired calibration audio and obtains.The microphone 3 is reaction type
Microphone.
The fixed algorithm includes the first calculation formula, the second calculation formula and third calculation formula,
First calculation formula includes frequency response error curve calculation formula and phase error curve calculation formula；
The frequency response error curve calculation formula is：EAn=An-An*, wherein, EAn is frequency response error curve, and An is third frequency response
Curve, An* are the first frequency response curve；
The phase error curve calculation formula is：EBn=Bn-Bn*, wherein, EBn is phase error curve, and Bn is third phase
Curve, Bn* are first phase curve；
Second calculation formula is：P=EAn * SIN (θ-EBn), wherein, P is the first frequency response curve and first phase curve
Compensated curve, θ be second phase curve；
The third calculation formula is：F=-（C+P）, wherein, F is filter coefficient, and C is the first frequency response curve and first phase
Curve.
As shown in Fig. 2, a kind of active denoising method of adaptive duct, based on artitificial ear and active noise reduction as described above
Earphone, the active denoising method include the following steps：
1）Calibration audio is sent to loud speaker 1 and played back by Audio Input Modules 2, and artitificial ear is acquired calibration audio,
Third frequency response curve and third phase curve are obtained, and third frequency response curve and third phase curve are stored in computing module 4
In；Since noise cancelling headphone noise reduction performance difference is concentrated mainly on low frequency, the frequency range of calibration audio is：50-
500HZ；
2）Microphone 3 is made to be placed in the cavity that 1 ante-chamber of loud speaker and human antrum auris are collectively formed, Audio Input Modules 2 will be calibrated
Audio is sent to loud speaker 1 and plays back, and microphone 3 is simultaneously acquired calibration audio and peripheral sound and is converted into first
First audio signal and the second audio signal are converted into the first frequency response song by audio signal and the second audio signal, computing module 4
Line, first phase curve and second phase curve；
3）Computing module 4 is by by step 1）The third frequency response curve and third phase curve that obtain, by step 2）Obtained
One frequency response curve, first phase curve and second phase curve and the fixation algorithm cooperation operation being built in computing module 4
It obtains filter coefficient, and filter coefficient is sent to the wave filter of noise reduction process module 5；
4）Audio is sent to noise reduction process module 5 by Audio Input Modules 2, and the wave filter use of noise reduction process module 5 is by step
3）Obtained filter coefficient is filtered audio noise reduction process, is then sent to the audio after filtered noise reduction process and raises
Sound device 1 plays back.
As shown in figure 3, step 3）In the measuring method of filter coefficient include the following steps：
1）Computing module 4 passes through third frequency response curve, third phase curve, the first frequency response curve, first phase curve and first
Calculation formula cooperation operation obtains frequency response error curve and phase error curve；
2）Computing module 4 is by second phase curve, the second calculation formula and by step 1）Obtained frequency response error curve and
Phase error curve fitting operation obtains the compensated curve of the first frequency response curve and first phase curve；
3）Computing module 4 passes through by the first frequency response curve, first phase curve, third computing module and by step 3）It obtains
The cooperation operation of the compensated curve of first frequency response curve and first phase curve obtains filter coefficient.
The above is only better embodiment of the present invention, and every technical solution according to the present invention is to above implementation
Any subtle modifications, equivalent variations and modifications that mode is made, belong in the range of technical solution of the present invention.
Claims (10)
1. a kind of adaptive duct active noise reduction earphone, it is characterised in that：Including：
Loud speaker, for playing calibration audio and the audio after noise reduction process；
Audio Input Modules, for calibration audio and audio to be interacted, inputted with Intelligent terminal data；
Microphone is acquired calibration audio and is converted into the first audio signal, peripheral sound is acquired and is converted into
Second audio signal, the microphone are positioned over the ante-chamber of loud speaker；
First audio signal is converted into the first parameter by computing module, and the second audio signal is converted into the second parameter, cooperation storage
It is stored in its internal third parameter and fixed algorithm operation obtains noise reduction parameters；And
Noise reduction process module carries out noise reduction process according to the noise reduction parameters that computing module is calculated to audio；
The Audio Input Modules, computing module, microphone and loud speaker are connect with noise reduction process module, and the microphone is put
It is placed in the ante-chamber of loud speaker.
2. a kind of adaptive duct active noise reduction earphone according to claim 1, it is characterised in that：The noise reduction process mould
Block includes wave filter, and the noise reduction parameters are filter coefficient.
3. a kind of adaptive duct active noise reduction earphone according to claim 1, it is characterised in that：First parameter is
The first frequency response curve and first phase curve that microphone is acquired calibration audio and obtains.
4. a kind of adaptive duct active noise reduction earphone according to claim 3, it is characterised in that：Second parameter is
The second phase curve that microphone is acquired peripheral sound and obtains.
5. a kind of adaptive duct active noise reduction earphone according to claim 4, it is characterised in that：The third parameter is
The third frequency response curve and third phase curve that artitificial ear is acquired calibration audio and obtains.
6. a kind of adaptive duct active noise reduction earphone according to claim 5, it is characterised in that：The fixed algorithm packet
The first calculation formula, the second calculation formula and third calculation formula are included,
First calculation formula includes frequency response error curve calculation formula and phase error curve calculation formula；
The frequency response error curve calculation formula is：EAn=An-An*, wherein, EAn is frequency response error curve, and An is third frequency response
Curve, An* are the first frequency response curve；
The phase error curve calculation formula is：EBn=Bn-Bn*, wherein, EBn is phase error curve, and Bn is third phase
Curve, Bn* are first phase curve；
Second calculation formula is：P=EAn * SIN (θ-EBn), wherein, P is the first frequency response curve and first phase curve
Compensated curve, θ be second phase curve；
The third calculation formula is：F=-（C+P）, wherein, F is filter coefficient, and C is the first frequency response curve and first phase
Curve.
7. a kind of adaptive duct active noise reduction earphone according to claim 1, it is characterised in that：The microphone is anti-
Feedback formula microphone.
8. a kind of adaptive duct active denoising method, it is characterised in that：Master based on artitificial ear and as described in claim 1-7
Dynamic noise cancelling headphone, the active denoising method include the following steps：
1）Calibration audio is sent to loud speaker and played back by Audio Input Modules, and artitificial ear is acquired calibration audio, obtains
It is stored in computing module to third frequency response curve and third phase curve, and by third frequency response curve and third phase curve；
2）Microphone is made to be placed in the cavity that loud speaker ante-chamber and human antrum auris are collectively formed, Audio Input Modules will calibrate audio
It is sent to loud speaker to play back, microphone is simultaneously acquired calibration audio and peripheral sound and is converted into the first audio letter
Number and the second audio signal, computing module the first audio signal and the second audio signal are converted into the first frequency response curve, first
Phase curve and second phase curve；
3）Computing module passes through by step 1）The third frequency response curve and third phase curve that obtain, by step 2）First obtained
Frequency response curve, first curve and second phase curve and the fixation algorithm cooperation operation being built in computing module obtain filter
Wave device coefficient, and filter coefficient is sent to the wave filter of noise reduction process module；
4）Audio is sent to noise reduction process module by Audio Input Modules, and the wave filter use of noise reduction process module is by step 3）
To filter coefficient noise reduction process is filtered to audio, the audio after filtered noise reduction process is then sent to loud speaker
It plays back.
9. a kind of adaptive duct active denoising method according to claim 8, it is characterised in that：Step 3）In filtering
The measuring method of device coefficient includes the following steps：
1）Computing module passes through third frequency response curve, third phase curve, the first frequency response curve, first phase curve and the first meter
It calculates formula cooperation operation and obtains frequency response error curve and phase error curve；
2）Computing module is by second phase curve, the second calculation formula and by step 1）Obtained frequency response error curve and phase
Position error curve cooperation operation obtains the compensated curve of the first frequency response curve and first phase curve；
3）Computing module passes through by the first frequency response curve, first phase curve, third computing module and by step 3）It obtains
The cooperation operation of the compensated curve of first frequency response curve and first phase curve obtains filter coefficient.
10. a kind of adaptive duct active denoising method according to claim 8, it is characterised in that：The calibration audio
Frequency range be：50-500HZ.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109246517A (en) * | 2018-10-12 | 2019-01-18 | 歌尔科技有限公司 | A kind of noise reduction microphone bearing calibration, wireless headset and the charging box of wireless headset |
| CN110740413A (en) * | 2019-09-12 | 2020-01-31 | 广东思派康电子科技有限公司 | environmental sound monitoring parameter calibration system and method |
| CN110809211A (en) * | 2020-01-08 | 2020-02-18 | 恒玄科技(北京)有限公司 | Method for actively reducing noise of earphone, active noise reduction system and earphone |
| CN110896512A (en) * | 2019-12-13 | 2020-03-20 | 恒玄科技(上海)股份有限公司 | Noise reduction method and system for semi-in-ear earphone and semi-in-ear earphone |
| CN110996210A (en) * | 2019-12-13 | 2020-04-10 | 恒玄科技(上海)股份有限公司 | Method for sound field equalization and earphone |
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| US10834494B1 (en) | 2019-12-13 | 2020-11-10 | Bestechnic (Shanghai) Co., Ltd. | Active noise control headphones |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101140760A (en) * | 2006-09-08 | 2008-03-12 | 联想移动通信科技有限公司 | Sound signal collecting and processing system and method thereof |
| CN101257729A (en) * | 2007-03-02 | 2008-09-03 | 索尼株式会社 | Signal processing apparatus and signal processing method |
| CN101765041A (en) * | 2009-06-09 | 2010-06-30 | 北京中星微电子有限公司 | Audio-frequency playing equipment and method for reducing environmental noises generated during audio-frequency playing |
| CN106937190A (en) * | 2015-12-29 | 2017-07-07 | 华为终端（东莞）有限公司 | Terminal, noise cancelling headphone and earphone noise-reduction method |
| CN107547962A (en) * | 2016-06-23 | 2018-01-05 | 联发科技股份有限公司 | Strengthen the method and device of the microphone signal transmitted from the receiver of earphone |
-
2018
- 2018-01-29 CN CN201810084308.7A patent/CN108174320B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101140760A (en) * | 2006-09-08 | 2008-03-12 | 联想移动通信科技有限公司 | Sound signal collecting and processing system and method thereof |
| CN101257729A (en) * | 2007-03-02 | 2008-09-03 | 索尼株式会社 | Signal processing apparatus and signal processing method |
| CN101765041A (en) * | 2009-06-09 | 2010-06-30 | 北京中星微电子有限公司 | Audio-frequency playing equipment and method for reducing environmental noises generated during audio-frequency playing |
| CN106937190A (en) * | 2015-12-29 | 2017-07-07 | 华为终端（东莞）有限公司 | Terminal, noise cancelling headphone and earphone noise-reduction method |
| CN107547962A (en) * | 2016-06-23 | 2018-01-05 | 联发科技股份有限公司 | Strengthen the method and device of the microphone signal transmitted from the receiver of earphone |
Cited By (20)
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|---|---|---|---|---|
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| CN109246517A (en) * | 2018-10-12 | 2019-01-18 | 歌尔科技有限公司 | A kind of noise reduction microphone bearing calibration, wireless headset and the charging box of wireless headset |
| CN110740413A (en) * | 2019-09-12 | 2020-01-31 | 广东思派康电子科技有限公司 | environmental sound monitoring parameter calibration system and method |
| CN110740413B (en) * | 2019-09-12 | 2022-01-28 | 广东思派康电子科技有限公司 | Environmental sound monitoring parameter calibration system and method |
| US11330359B2 (en) | 2019-12-13 | 2022-05-10 | Bestechnic (Shanghai) Co., Ltd. | Active noise control headphones |
| CN110896512A (en) * | 2019-12-13 | 2020-03-20 | 恒玄科技(上海)股份有限公司 | Noise reduction method and system for semi-in-ear earphone and semi-in-ear earphone |
| US11653141B2 (en) | 2019-12-13 | 2023-05-16 | Bestechnic (Shanghai) Co., Ltd. | Active noise control headphones |
| US11595748B2 (en) | 2019-12-13 | 2023-02-28 | Bestechnic (Shanghai) Co., Ltd. | Active noise control headphones |
| US10834494B1 (en) | 2019-12-13 | 2020-11-10 | Bestechnic (Shanghai) Co., Ltd. | Active noise control headphones |
| CN110996210A (en) * | 2019-12-13 | 2020-04-10 | 恒玄科技(上海)股份有限公司 | Method for sound field equalization and earphone |
| US11317192B2 (en) | 2019-12-13 | 2022-04-26 | Bestechnic (Shanghai) Co., Ltd. | Active noise control headphones |
| CN110996210B (en) * | 2019-12-13 | 2021-11-23 | 恒玄科技(上海)股份有限公司 | Method for sound field equalization and earphone |
| CN111010657A (en) * | 2019-12-19 | 2020-04-14 | 深圳市方宁思创科技有限公司 | Digital ANC automatic simulation test method |
| CN111541971A (en) * | 2020-01-08 | 2020-08-14 | 恒玄科技(北京)有限公司 | Method for actively reducing noise of earphone, active noise reduction system and earphone |
| CN110809211A (en) * | 2020-01-08 | 2020-02-18 | 恒玄科技(北京)有限公司 | Method for actively reducing noise of earphone, active noise reduction system and earphone |
| CN111212351A (en) * | 2020-02-28 | 2020-05-29 | 邝建红 | Self-calibration self-adaptive device and system for active noise reduction earphone |
| CN111491234A (en) * | 2020-04-16 | 2020-08-04 | 广东思派康电子科技有限公司 | Headset noise reduction earphone |
| CN112738692A (en) * | 2021-02-03 | 2021-04-30 | 广州由我科技股份有限公司 | Filter design method, device, earphone, electronic equipment and storage medium |
| CN112738692B (en) * | 2021-02-03 | 2022-05-24 | 广州由我科技股份有限公司 | Filter design method, device, earphone, electronic equipment and storage medium |
| WO2023070920A1 (en) * | 2021-10-28 | 2023-05-04 | 歌尔科技有限公司 | Earphone frequency response calibration method and apparatus, and earphone device and storage medium |
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