CN101924967A - Noise reduction earphone and method for reducing noises and distortion of same - Google Patents
Noise reduction earphone and method for reducing noises and distortion of same Download PDFInfo
- Publication number
- CN101924967A CN101924967A CN 201010259266 CN201010259266A CN101924967A CN 101924967 A CN101924967 A CN 101924967A CN 201010259266 CN201010259266 CN 201010259266 CN 201010259266 A CN201010259266 A CN 201010259266A CN 101924967 A CN101924967 A CN 101924967A
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- noise
- audio playing
- playing apparatus
- signal
- eliminating system
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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
- H04R2410/00—Microphones
- H04R2410/05—Noise reduction with a separate noise microphone
Abstract
The invention provides a pair of noise reduction earphones and a method for reducing the noises and the distortion of the same. In the invention, a first audio-frequency playing device is used for playing source signals, and a second audio-frequency playing device is used for playing antinoise signals with which are generated by a noise eliminating system and have equal amplitudes and reverse phases with environmental noises so that the source signals, the environmental noises and the antinoise signals are mixed and added to form an acoustic adder in the earphones or the auditory meatus of human bodies so as to counteract the environmental noises, therefore the human bodies only hear the input source signals; and the noise eliminating system and the input source signals are completely independent, therefore the distortion degree and noises of the source signals can not be increased.
Description
[technical field]
The present invention relates to earphone, relate in particular to the method for a kind of noise cancelling headphone and reduction earphone noise and distortion.
[background technology]
Along with the application of portable music player, earphone is also extensively popularized.Usually in high the using in the street or in the vehicles such as bus of noise level, with the music of being reproduced by player, external noise also can pass earphone and be heard portable music player.If listen to the music in noise, musical sound is flooded by noise sometimes, listens to the music so the user will improve volume, and the undue raising of volume will cause people's impaired hearing, and sound leaks into the outside from earphone, and the people around allowing sometimes feel bad.In addition, promptly use the musical sound of headphone reproduction high tone quality, the noise that enters from the outside is bothered sometimes, and the quality of the reproduction sound that the user can hear is descended.Therefore, eliminate the noise that enters from the outside, can only hear that in user's ear the noise removing formula earphone of musical sound is popularized.In order to eliminate noise, earphone must be launched has the amplitude identical with the ambient sound that occurs at the wearer's ear place but the sound wave of opposite polarity in the prior art, ambient sound waves and from the sound wave combination of earphone, and two ripples disappear each other mutually.As depicted in figs. 1 and 2, present noise cancelling headphone uses the add circuit on the electricity, with mixing with the anti-phase noise signal of ambient noise of the source signal of input and noise canceller circuit generation.In Fig. 1, source signal will pass through adder and amplifier, outputs to then on the loud speaker, and adder and amplifier all will produce noise and distortion.In Fig. 2, source signal will pass through adder, output on the loud speaker then, the impedance of adder will reduce the control ability of signal source to loud speaker, promptly reduces the damping coefficient of signal source, and this will reduce tonequality, anti-phase noise signal also is applied on the adder simultaneously, scurry in the signal source by adder, signal source is formed disturb, this also will reduce tonequality.
[summary of the invention]
In order to solve the problems of the prior art, the invention provides a kind of method that has the noise cancelling headphone of the high-fidelity and the minimizing distortion factor and reduce earphone noise and distortion.
The invention provides a kind of noise cancelling headphone, comprise first audio playing apparatus, noise eliminating system, second audio playing apparatus that link to each other with the source signal device, described second audio playing apparatus links to each other with described noise eliminating system and plays the antinoise signal, and described first audio playing apparatus and described second audio playing apparatus match and form adder on the acoustics.
As a further improvement on the present invention, described noise eliminating system comprises microphone, noise canceller circuit, and described noise canceller circuit input links to each other with described microphone, and described noise canceller circuit output links to each other with described second audio playing apparatus.
As a further improvement on the present invention, described first audio playing apparatus is first loud speaker, and described second audio playing apparatus is second loud speaker.
As a further improvement on the present invention, described first audio playing apparatus is first voice coil loudspeaker voice coil that is installed in the speaker unit, and described second audio playing apparatus is second voice coil loudspeaker voice coil that is installed in the described speaker unit.
As a further improvement on the present invention, described noise cancelling headphone also comprises the switching device of described first audio playing apparatus of control and the described second audio playing apparatus operating state.
The present invention also provides a kind of reduction earphone noise and distortion methods, and the first audio playing apparatus reception sources signal is also play; Noise eliminating system produces the antinoise signal, and second audio playing apparatus receives described antinoise signal and plays; Antinoise signal that source signal that described first audio playing apparatus is play and described second audio playing apparatus are play and environmental noise form the adder on the acoustics.
As a further improvement on the present invention, described noise eliminating system comprises microphone and noise canceller circuit, described microphone reception environment noise, and noise canceller circuit produces and the opposite antinoise signal of described environmental noise amplitude equal phase.
As a further improvement on the present invention, earphone has three kinds of operating states, is respectively, only the first audio playing apparatus operating state, the second audio playing apparatus operating state, first audio playing apparatus and second audio playing apparatus operating state simultaneously only; The user is switched between three kinds of operating states as required.
The invention has the beneficial effects as follows: by the first audio playing apparatus broadcast source signal, second audio playing apparatus is play by noise eliminating system and is produced the antinoise signal opposite with environmental noise amplitude equal phase, make source signal, environmental noise and antinoise signal in earphone or human antrum auris, mix addition, form the adder on the acoustics, thereby the counteracting environmental noise makes human body only hear the source signal of input; And, therefore can not increase the distortion factor and the noise of input source signal because the source signal of noise eliminating system and input is independent fully on circuit.
[description of drawings]
Fig. 1 is a kind of execution mode circuit diagram of existing earphone;
Fig. 2 is the another kind of execution mode circuit diagram of existing earphone;
Fig. 3 is the theory diagram of noise cancelling headphone of the present invention;
Fig. 4 is a kind of execution mode circuit diagram of noise cancelling headphone of the present invention.
[embodiment]
As shown in Figure 3, a kind of noise cancelling headphone is disclosed, comprise first audio playing apparatus 1, noise eliminating system 3, second audio playing apparatus 2 that link to each other with source signal device 5, described second audio playing apparatus 2 links to each other with described noise eliminating system 3 and plays the antinoise signal, and described first audio playing apparatus 1 and described second audio playing apparatus 2 match and form adder on the acoustics.
As shown in Figure 4, this noise eliminating system 3 can comprise microphone 31, noise canceller circuit 32, and described noise canceller circuit 32 inputs link to each other with described microphone 31, and described noise canceller circuit 32 outputs link to each other with described second audio playing apparatus 2.
As one embodiment of the present of invention, this first audio playing apparatus 1 is first loud speaker 11, this second audio playing apparatus 2 is second loud speaker 12, this first loud speaker 11 and this second loud speaker 12 can be installed in the earphone outer covering 6, and microphone 31 also can be installed in the described earphone outer covering 6.
As an alternative embodiment of the invention, this first audio playing apparatus 1 is for being installed in first voice coil loudspeaker voice coil in the speaker unit, this second audio playing apparatus 2 is for being installed in second voice coil loudspeaker voice coil in the described speaker unit, and microphone 4 equally also can be installed in this earphone outer covering 6.
This noise cancelling headphone also comprises the switching device of this first audio playing apparatus 1 of control and these second audio playing apparatus, 2 operating states.When using this noise cancelling headphone, if the user wants to close decrease of noise functions, only listen to the music, then switching device can cut out second audio playing apparatus 2, only uses first audio playing apparatus 1.If the user does not want to listen to the music, only want to reduce environmental noise, then switching device can cut out first audio playing apparatus 1, only uses second audio playing apparatus 2.Have only when the user is in the noisy environment, should listen to the music, when reducing environmental noise again, described first audio playing apparatus 1 is play simultaneously with described second audio playing apparatus 2.
Source signal, environmental noise and antinoise signal can or can mix addition in this noise cancelling headphone in human antrum auris, form the adder on the acoustics; When first audio playing apparatus 1 and second audio playing apparatus 2 are installed in the edge of earphone outer covering 6, the sound wave that first audio playing apparatus 1 and second audio playing apparatus 2 send is transmitted directly to outside the earphone outer covering 6, therefore source signal and antinoise signal can not mix addition in earphone outer covering 6, can only be the adder of mixing in the human antrum auris on the addition formation acoustics outside this noise cancelling headphone.
The invention also discloses a kind of reduction earphone noise method, first audio playing apparatus, 1 reception sources signal is also play; Noise eliminating system 3 produces the antinoise signal, and second audio playing apparatus 2 receives described antinoise signal and plays; Antinoise signal that source signal that described first audio playing apparatus 1 is play and described second audio playing apparatus 2 are play and environmental noise form the adder on the acoustics.Described noise eliminating system comprises microphone 31 and noise canceller circuit 32, described microphone 31 reception environment noises, and noise canceller circuit 32 produces and the opposite antinoise signal of described environmental noise amplitude equal phase.Earphone has three kinds of operating states, is respectively, only the first audio playing apparatus operating state, the second audio playing apparatus operating state, first audio playing apparatus and second audio playing apparatus operating state simultaneously only; The user is switched between three kinds of operating states as required.
The present invention reduces earphone noise method by the first audio playing apparatus broadcast source signal, second audio playing apparatus is play by noise eliminating system and is produced the antinoise signal opposite with environmental noise amplitude equal phase, make source signal, environmental noise and antinoise signal in this noise cancelling headphone or human antrum auris, mix addition, form the adder on the acoustics, thereby counteracting environmental noise, make human body only hear the source signal of input, guaranteed the tonequality of source signal.
Described source signal can be music or any audio signal.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. noise cancelling headphone, it is characterized in that: comprise first audio playing apparatus, noise eliminating system, second audio playing apparatus that link to each other with the source signal device, described second audio playing apparatus links to each other with described noise eliminating system and plays the antinoise signal, and described first audio playing apparatus and described second audio playing apparatus match and form adder on the acoustics.
2. noise cancelling headphone according to claim 1, it is characterized in that: described noise eliminating system comprises microphone, noise canceller circuit, and described noise canceller circuit input links to each other with described microphone, and described noise canceller circuit output links to each other with described second audio playing apparatus.
3. noise cancelling headphone according to claim 1 and 2 is characterized in that: described first audio playing apparatus is first loud speaker, and described second audio playing apparatus is second loud speaker.
4. noise cancelling headphone according to claim 1 and 2 is characterized in that: described first audio playing apparatus is first voice coil loudspeaker voice coil that is installed in the speaker unit, and described second audio playing apparatus is second voice coil loudspeaker voice coil that is installed in the described speaker unit.
5. noise cancelling headphone according to claim 1 and 2 is characterized in that: described noise cancelling headphone also comprises the switching device of described first audio playing apparatus of control and the described second audio playing apparatus operating state.
6. method that reduces earphone noise and distortion, it is characterized in that: the first audio playing apparatus reception sources signal is also play; Noise eliminating system produces the antinoise signal, and second audio playing apparatus receives described antinoise signal and plays; Antinoise signal that source signal that described first audio playing apparatus is play and described second audio playing apparatus are play and environmental noise form the adder on the acoustics.
7. reduction earphone noise method according to claim 6, it is characterized in that: described noise eliminating system comprises microphone and noise canceller circuit, described microphone reception environment noise, noise canceller circuit produces and the opposite antinoise signal of described environmental noise amplitude equal phase.
8. reduction earphone noise method according to claim 7, it is characterized in that: earphone has three kinds of operating states, be respectively, only the first audio playing apparatus operating state, the second audio playing apparatus operating state, first audio playing apparatus and second audio playing apparatus operating state simultaneously only; The user is switched between three kinds of operating states as required.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010259266 CN101924967A (en) | 2010-08-20 | 2010-08-20 | Noise reduction earphone and method for reducing noises and distortion of same |
| PCT/CN2011/077816 WO2012022220A1 (en) | 2010-08-20 | 2011-07-29 | Noise reduction headphones and method for reducing headphone noise and distortion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010259266 CN101924967A (en) | 2010-08-20 | 2010-08-20 | Noise reduction earphone and method for reducing noises and distortion of same |
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| Publication Number | Publication Date |
|---|---|
| CN101924967A true CN101924967A (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010259266 Pending CN101924967A (en) | 2010-08-20 | 2010-08-20 | Noise reduction earphone and method for reducing noises and distortion of same |
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| CN (1) | CN101924967A (en) |
| WO (1) | WO2012022220A1 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011113341A1 (en) * | 2010-03-18 | 2011-09-22 | 华为终端有限公司 | Audio apparatus capable of noise reduction and mobile telephone capable of noise reduction |
| WO2012022220A1 (en) * | 2010-08-20 | 2012-02-23 | Li Xiao | Noise reduction headphones and method for reducing headphone noise and distortion |
| CN104036782A (en) * | 2013-03-06 | 2014-09-10 | 联想(北京)有限公司 | Noise reduction method and handheld mobile terminal |
| CN104244139A (en) * | 2013-06-07 | 2014-12-24 | 深圳富泰宏精密工业有限公司 | Receiver control circuit and portable electronic device |
| CN105635872A (en) * | 2014-10-29 | 2016-06-01 | 东莞宇龙通信科技有限公司 | Method and device for playing information, and earphone |
| TWI563856B (en) * | 2014-02-27 | 2016-12-21 | Merry Electronics Co Ltd | Mobile device and corresponding noise-canceling earphone |
| CN107517423A (en) * | 2017-10-23 | 2017-12-26 | 南昌科卓科技有限公司 | A kind of highly sensitive bluetooth earphone |
| CN107734418A (en) * | 2017-10-23 | 2018-02-23 | 吉安市立讯射频科技股份有限公司 | A kind of Portable Bluetooth stereo headset |
| CN108156551A (en) * | 2018-02-09 | 2018-06-12 | 会听声学科技（北京）有限公司 | Active noise reduction system, active noise reduction earphone and active denoising method |
| CN108513100A (en) * | 2018-04-13 | 2018-09-07 | 浠诲嘲 | Automatic silene system based on signal analysis |
| WO2019084886A1 (en) * | 2017-11-03 | 2019-05-09 | 深圳传音通讯有限公司 | Audio denoising method and denoising device, mobile terminal and readable storage medium |
| CN110031088A (en) * | 2019-04-17 | 2019-07-19 | 珠海格力电器股份有限公司 | Electronic failure detection method, device, equipment and range hood |
| CN112618952A (en) * | 2020-12-10 | 2021-04-09 | 刘�东 | Ear acupoint therapeutic instrument |
| CN114038488A (en) * | 2021-11-02 | 2022-02-11 | 维沃移动通信有限公司 | Method and device for acquiring and playing multimedia information and electronic equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102015121333A1 (en) * | 2015-12-08 | 2017-06-08 | Sennheiser Electronic Gmbh & Co. Kg | Electroacoustic transducer unit and receiver |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101203A (en) * | 1993-09-29 | 1995-04-05 | 黄大伟 | Anti-noise earphone |
| CN101583059A (en) * | 2008-05-15 | 2009-11-18 | 欧力天工股份有限公司 | Noise-cancelling headphone |
| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2588714Y (en) * | 2002-05-31 | 2003-11-26 | 黄大伟 | Noise-eliminating earphone |
| CN201207642Y (en) * | 2008-04-23 | 2009-03-11 | 符诗华 | Wireless noise reducing earphone |
| CN101924967A (en) * | 2010-08-20 | 2010-12-22 | 黎晓 | Noise reduction earphone and method for reducing noises and distortion of same |
-
2010
- 2010-08-20 CN CN 201010259266 patent/CN101924967A/en active Pending
-
2011
- 2011-07-29 WO PCT/CN2011/077816 patent/WO2012022220A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101203A (en) * | 1993-09-29 | 1995-04-05 | 黄大伟 | Anti-noise earphone |
| CN101583059A (en) * | 2008-05-15 | 2009-11-18 | 欧力天工股份有限公司 | Noise-cancelling headphone |
| 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 |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011113341A1 (en) * | 2010-03-18 | 2011-09-22 | 华为终端有限公司 | Audio apparatus capable of noise reduction and mobile telephone capable of noise reduction |
| WO2012022220A1 (en) * | 2010-08-20 | 2012-02-23 | Li Xiao | Noise reduction headphones and method for reducing headphone noise and distortion |
| CN104036782A (en) * | 2013-03-06 | 2014-09-10 | 联想(北京)有限公司 | Noise reduction method and handheld mobile terminal |
| CN104244139A (en) * | 2013-06-07 | 2014-12-24 | 深圳富泰宏精密工业有限公司 | Receiver control circuit and portable electronic device |
| TWI563856B (en) * | 2014-02-27 | 2016-12-21 | Merry Electronics Co Ltd | Mobile device and corresponding noise-canceling earphone |
| CN105635872A (en) * | 2014-10-29 | 2016-06-01 | 东莞宇龙通信科技有限公司 | Method and device for playing information, and earphone |
| CN107517423A (en) * | 2017-10-23 | 2017-12-26 | 南昌科卓科技有限公司 | A kind of highly sensitive bluetooth earphone |
| CN107734418A (en) * | 2017-10-23 | 2018-02-23 | 吉安市立讯射频科技股份有限公司 | A kind of Portable Bluetooth stereo headset |
| WO2019084886A1 (en) * | 2017-11-03 | 2019-05-09 | 深圳传音通讯有限公司 | Audio denoising method and denoising device, mobile terminal and readable storage medium |
| CN108156551A (en) * | 2018-02-09 | 2018-06-12 | 会听声学科技（北京）有限公司 | Active noise reduction system, active noise reduction earphone and active denoising method |
| CN108513100A (en) * | 2018-04-13 | 2018-09-07 | 浠诲嘲 | Automatic silene system based on signal analysis |
| CN110031088A (en) * | 2019-04-17 | 2019-07-19 | 珠海格力电器股份有限公司 | Electronic failure detection method, device, equipment and range hood |
| CN112618952A (en) * | 2020-12-10 | 2021-04-09 | 刘�东 | Ear acupoint therapeutic instrument |
| CN114038488A (en) * | 2021-11-02 | 2022-02-11 | 维沃移动通信有限公司 | Method and device for acquiring and playing multimedia information and electronic equipment |
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| Publication number | Publication date |
|---|---|
| WO2012022220A1 (en) | 2012-02-23 |
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Application publication date: 20101222 |