CN102209135B - For the device and method that mobile terminal fall wind is made an uproar - Google Patents
For the device and method that mobile terminal fall wind is made an uproar Download PDFInfo
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- CN102209135B CN102209135B CN201110132375.XA CN201110132375A CN102209135B CN 102209135 B CN102209135 B CN 102209135B CN 201110132375 A CN201110132375 A CN 201110132375A CN 102209135 B CN102209135 B CN 102209135B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
- G10K11/17823—Reference signals, e.g. ambient acoustic environment
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17861—Methods, e.g. algorithms; Devices using additional means for damping sound, e.g. using sound absorbing panels
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L21/0232—Processing in the frequency domain
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- General Health & Medical Sciences (AREA)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Human Computer Interaction (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Telephone Function (AREA)
Abstract
The invention discloses that a kind of wherein device includes: wind noise cancellation signal acquisition module for the mobile terminal fall device and method made an uproar of wind, for gathering the wind noise cancellation signal in the external world, and be converted into the signal of telecommunication and export wind noise cancellation signal detection module and wind noise cancellation signal processing module；Wind noise cancellation signal detection module, for detecting the wind noise cancellation signal of wind noise cancellation signal acquisition module output, and triggers wind noise cancellation signal processing module determining that needs carry out dropping when wind is made an uproar and processed；Wind noise cancellation signal processing module, for being filtered the wind noise cancellation signal that wind noise cancellation signal acquisition module exports, amplify and exporting mobile terminal receiver after phse conversion process；One aspect of the present invention improves the voice quality of oneself receiver side, makes oneself can hear the voice of the other side clearly；On the other hand improve the voice quality of the other side's receiver side, make, to the voice that can hear oneself clearly, to make communication apparent, smooth, substantially improve the communication effect in the case of user the most particularly has wind.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of device and method for mobile terminal fall wind is made an uproar.
Background technology
Along with the fast development of mobile communication technology, mobile phone has become as the necessary that people's daily life is indispensable now.
But communication effect is good when existing common mobile telephone especially uses in indoor environment in general use environment, but use out of doors especially when the field usage that wind-force is bigger, wind noise is clearly, not only oneself do not hear the voice signal that the other side passes over, and wind noise cancellation signal can be delivered to the other side's receiver side by mike, making the other side not hear the voice signal of oneself, the exchange to both sides causes the biggest obstacle, has had a strong impact on effect and the quality of call.
Summary of the invention
In view of above-mentioned analysis, it is desirable to provide a kind of device and method for mobile terminal fall wind is made an uproar, in order to solve in prior art owing to wind is made an uproar the poor problem of the communication effect brought to mobile terminal.
The purpose of the present invention is mainly achieved through the following technical solutions:
The invention provides a kind of device for mobile terminal fall wind is made an uproar, including: wind noise cancellation signal acquisition module, wind noise cancellation signal detection module and wind noise cancellation signal processing module, wherein,
Described wind noise cancellation signal acquisition module, for gathering the wind noise cancellation signal in the external world, and converts thereof into the signal of telecommunication and exports to described wind noise cancellation signal detection module and described wind noise cancellation signal processing module；
Described wind noise cancellation signal detection module, for detecting the wind noise cancellation signal of described wind noise cancellation signal acquisition module output, and triggers described wind noise cancellation signal processing module determining that needs carry out dropping when wind is made an uproar and processed；
Described wind noise cancellation signal processing module, for being filtered the wind noise cancellation signal that described wind noise cancellation signal acquisition module exports, amplify and exporting mobile terminal receiver after phse conversion process.
Further, described wind noise cancellation signal detection module specifically for, to described wind noise cancellation signal acquisition module output wind noise cancellation signal filter High-frequency Interference and amplify, then judge that whether it is more than predetermined wind noise cancellation signal threshold, make an uproar processing module if it is, trigger described wind, the most do not make noise reduction process.
Further, described wind noise cancellation signal processing module specifically includes: filter unit and reverse amplifying unit, wherein,
Described filter unit, exports to described reverse amplifying unit after the wind noise cancellation signal of described wind noise cancellation signal acquisition module output is filtered low-frequency disturbance；
Described reverse amplifying unit, is amplified successively for the wind noise cancellation signal that exported by described filter unit, amplitude and Phase Processing, and the amplitude making output is identical with the wind noise cancellation signal amplitude of human ear side, opposite in phase.
Further, also include: passive fall wind is made an uproar module, and this module includes: uni-directional microphone, microphone glue sheath, wherein,
Described uni-directional microphone, is arranged at the precalculated position of mobile terminal shell, and it goes out acoustic aperture and points to the sound hole of mobile terminal fore shell；
Described microphone glue sheath, is enclosed within described uni-directional microphone, and the acoustic aperture physics that goes out of its perforate and described uni-directional microphone staggers.
Further, described passive fall wind module of making an uproar also includes: poroid fall wind is made an uproar material, and one side is in close contact with mobile terminal fore shell, and another side closely crimps with described microphone glue sheath.
Present invention also offers a kind of method for mobile terminal fall wind is made an uproar, including:
Step A: gather extraneous wind noise cancellation signal, and be converted into signal of telecommunication output；
Step B: the wind noise cancellation signal of step A output is detected, and determine needs carry out dropping wind make an uproar process time, it is filtered, amplify and phse conversion process after output to mobile terminal receiver.
Further, described step B specifically includes
The wind noise cancellation signal being converted into the signal of telecommunication is filtered High-frequency Interference and amplifies；
Judge that whether the wind noise cancellation signal after filtering High-frequency Interference and amplifying is more than predetermined wind noise cancellation signal threshold, if, the wind noise cancellation signal of step A output is filtered low-frequency disturbance, and be amplified successively, amplitude and Phase Processing, the amplitude making output is identical with the wind noise cancellation signal amplitude of human ear side, opposite in phase；The most do not make noise reduction process.
The present invention has the beneficial effect that:
The embodiment of the present invention actively drop wind and makes an uproar and passively drop wind by increasing and make an uproar process, and one side improves the voice quality of oneself receiver side, makes oneself can hear the voice of the other side clearly；On the other hand improve the voice quality of the other side's receiver side, make, to the voice that can hear oneself clearly, to make communication apparent, smooth, substantially improve the communication effect in the case of user the most particularly has wind.
Other features and advantages of the present invention will illustrate in the following description, and, becoming apparent from description of part, or understand by implementing the present invention.The purpose of the present invention and other advantages can be realized by structure specifically noted in the description write, claims and accompanying drawing and be obtained.
Accompanying drawing explanation
Fig. 1 is the structural representation of device described in the embodiment of the present invention；
Fig. 2 is in the embodiment of the present invention, the structural representation of wind noise cancellation signal processing module；
Fig. 3 is in the embodiment of the present invention, and passive fall wind is made an uproar the structural representation of module；
Fig. 4 is the schematic flow sheet of method described in the embodiment of the present invention.
Detailed description of the invention
Specifically describing the preferred embodiments of the present invention below in conjunction with the accompanying drawings, wherein, accompanying drawing constitutes the application part, and together with embodiments of the present invention for explaining the principle of the present invention.For purpose of clarity and simplification, when it may make subject of the present invention smudgy, illustrating in detail of known function and structure in device described herein will be omitted.
First, in conjunction with accompanying drawing 1, device described in the embodiment of the present invention is described in detail.
As it is shown in figure 1, Fig. 1 is the structural representation of device described in the embodiment of the present invention, specifically may include that wind noise cancellation signal acquisition module 11, wind noise cancellation signal detection module 12, wind noise cancellation signal processing module 13, wherein
Wind noise cancellation signal acquisition module 11, gathers extraneous wind noise cancellation signal, and is converted into the signal of telecommunication and exports wind noise cancellation signal detection module 12 and wind noise cancellation signal processing module 13；
Wind noise cancellation signal detection module 12, detects the wind noise cancellation signal of wind noise cancellation signal acquisition module 11 output, and triggers wind noise cancellation signal processing module 13 determining that needs carry out dropping when wind is made an uproar and processed；It is exactly specifically, the wind noise cancellation signal that wind noise cancellation signal acquisition module 11 is exported by wind noise cancellation signal detection module 12 filters High-frequency Interference and amplifies, and then judges whether it is more than predetermined wind noise cancellation signal threshold, if, trigger wind noise cancellation signal processing module 13, the most do not make noise reduction process.
Wind noise cancellation signal processing module 13, the wind noise cancellation signal that wind noise cancellation signal acquisition module 11 exports is filtered, amplifies and export mobile terminal receiver after phse conversion process, the wind noise cancellation signal being allowed to occur with receiver side offsets, thus realizes actively dropping the effect that wind is made an uproar.
As in figure 2 it is shown, the structural representation that Fig. 2 is wind noise cancellation signal processing module 13, wind noise cancellation signal processing module 13 mainly includes filter unit 131 and reverse amplifying unit 132.
Filter unit 131, the wind noise cancellation signal mainly gathered wind noise cancellation signal acquisition module 11 processes, and filters the low frequency signal (predominantly non-speech audio) wherein mixed, and makes to carry out signal reverse, processing and amplifying cleaner；
Reversely amplifying unit 132, is mainly amplified filtered wind noise cancellation signal, amplitude and Phase Processing so that it is the amplitude of output is identical with the wind noise cancellation signal amplitude of human ear side, opposite in phase, and then is offset by wind noise, plays and drops the effect that wind is made an uproar.
The most several modules primarily serve and actively drop the effect that wind is made an uproar, and make an uproar effect to play preferably fall wind, and device described in the embodiment of the present invention can also include: passive fall wind is made an uproar module；As it is shown on figure 3, Fig. 3 is that passively fall wind is made an uproar the structural representation of module, specifically may include that uni-directional microphone 31, microphone glue sheath 32, poroid fall wind are made an uproar material 33,
Uni-directional microphone 31, it goes out acoustic aperture and points to the sound hole on mobile terminal fore shell 34；
Microphone glue sheath 32, with uni-directional microphone physical connection, being enclosed within uni-directional microphone 31, the acoustic aperture physics that goes out of its perforate and uni-directional microphone staggers, and material 33 of making an uproar with poroid fall wind closely crimps, closure noise signal within mobile terminal is delivered to mike；Meanwhile, poroid fall wind material 33 of making an uproar is in close contact with mobile terminal fore shell 34, can weaken the extraneous wind noise cancellation signal entering mike, and then plays suppression the other side and hear the effect of wind noise.
It follows that method described in the embodiment of the present invention will be described in detail in conjunction with accompanying drawing 4.
As shown in Figure 4, Fig. 4 is the schematic flow sheet of method described in the embodiment of the present invention, specifically may include steps of:
Step 401: gather extraneous wind noise cancellation signal, and be converted into signal of telecommunication output；
Step 402: the wind noise cancellation signal of step 401 output is detected, and determine needs carry out dropping wind make an uproar process time, it is filtered, amplify and phse conversion process after output to mobile terminal receiver.
Described step 402 specifically includes
The wind noise cancellation signal being converted into the signal of telecommunication is filtered High-frequency Interference and amplifies；
Judge that whether the wind noise cancellation signal after filtering High-frequency Interference and amplifying is more than predetermined wind noise cancellation signal threshold, if, the wind noise cancellation signal of step 401 output is filtered low-frequency disturbance, and be amplified successively, amplitude and Phase Processing, the amplitude making output is identical with the wind noise cancellation signal amplitude of human ear side, opposite in phase；The most do not make noise reduction process.
In sum, embodiments provide a kind of device and method for mobile terminal fall wind is made an uproar, compared with general communication mobile terminal, the embodiment of the present invention adds and actively drops wind and make an uproar and passively fall wind is made an uproar process, on the one hand improve the voice quality of oneself receiver side, make oneself can hear the voice of the other side clearly；On the other hand improve the voice quality of the other side's receiver side, make, to the voice that can hear oneself clearly, to make communication apparent, smooth, substantially improve the communication effect in the case of user the most particularly has wind.
The above; being only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (6)
1. one kind is used for the device making an uproar mobile terminal fall wind, it is characterised in that including: wind noise cancellation signal gathers
Module, wind noise cancellation signal detection module, wind noise cancellation signal processing module and passive fall wind are made an uproar module, wherein,
Described wind noise cancellation signal acquisition module, for gathering the wind noise cancellation signal in the external world, and converts thereof into the signal of telecommunication
Output is to described wind noise cancellation signal detection module and described wind noise cancellation signal processing module；
Described wind noise cancellation signal detection module, for entering the wind noise cancellation signal of described wind noise cancellation signal acquisition module output
Row detection, and trigger described wind noise cancellation signal processing module determining that needs carry out dropping when wind is made an uproar and processed；
Described wind noise cancellation signal processing module, for entering the wind noise cancellation signal that described wind noise cancellation signal acquisition module exports
Row filtering, amplification and phse conversion export mobile terminal receiver after processing；
Passive fall wind is made an uproar module, and this module includes: uni-directional microphone, microphone glue sheath, wherein,
Described uni-directional microphone, is arranged at the precalculated position of mobile terminal shell, and it goes out acoustic aperture and points to mobile
The sound hole of terminal fore shell；
Described microphone glue sheath, is enclosed within described uni-directional microphone, and its perforate points to wheat with described list
The acoustic aperture physics that goes out of gram wind staggers.
Device the most according to claim 1, it is characterised in that described wind noise cancellation signal detection module is concrete
For, the wind noise cancellation signal of described wind noise cancellation signal acquisition module output is filtered High-frequency Interference and amplifies, then sentences
Whether disconnected its is more than predetermined wind noise cancellation signal threshold, if it is, trigger described wind noise cancellation signal processing module, no
The most do not make noise reduction process.
Device the most according to claim 1, it is characterised in that described wind noise cancellation signal processing module is concrete
Including: filter unit and reverse amplifying unit, wherein,
Described filter unit, does for the wind noise cancellation signal of described wind noise cancellation signal acquisition module output is filtered low frequency
Export after disturbing to described reverse amplifying unit；
Described reverse amplifying unit, be amplified successively for the wind noise cancellation signal that described filter unit is exported,
Amplitude and Phase Processing, the amplitude making output is identical with the wind noise cancellation signal amplitude of human ear side, opposite in phase.
Device the most according to claim 1, it is characterised in that described passive fall wind module of making an uproar also includes:
Poroid fall wind is made an uproar material, and one side is in close contact with mobile terminal fore shell, and another side is tight with described microphone glue sheath
Close crimping.
5. the method being used for mobile terminal fall wind is made an uproar, it is characterised in that including:
Step A: gather extraneous wind noise cancellation signal, and be converted into signal of telecommunication output；
Step B: the wind noise cancellation signal of step A output is detected, and determining that needs carry out dropping wind and make an uproar place
It during reason, is filtered, amplifies and export after phse conversion process the receiver of mobile terminal；
Described terminal includes: passive fall wind is made an uproar module, and this module includes: uni-directional microphone, mike glue
Set, wherein,
Described uni-directional microphone, is arranged at the precalculated position of mobile terminal shell, and it goes out acoustic aperture and points to mobile
The sound hole of terminal fore shell；
Described microphone glue sheath, is enclosed within described uni-directional microphone, and its perforate points to wheat with described list
The acoustic aperture physics that goes out of gram wind staggers.
Method the most according to claim 5, it is characterised in that described step B specifically includes
The wind noise cancellation signal being converted into the signal of telecommunication is filtered High-frequency Interference and amplifies；
Judge whether the wind noise cancellation signal after filtering High-frequency Interference and amplifying is more than predetermined wind noise cancellation signal threshold, as
Fruit is, the wind noise cancellation signal of step A output filtered low-frequency disturbance, and be amplified successively, amplitude and phase place
Processing, the amplitude making output is identical with the wind noise cancellation signal amplitude of human ear side, opposite in phase；The most do not make noise reduction
Process.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110132375.XA CN102209135B (en) | 2011-05-20 | 2011-05-20 | For the device and method that mobile terminal fall wind is made an uproar |
| PCT/CN2011/078591 WO2012159380A1 (en) | 2011-05-20 | 2011-08-18 | Device and method for reducing wind noise for mobile terminals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110132375.XA CN102209135B (en) | 2011-05-20 | 2011-05-20 | For the device and method that mobile terminal fall wind is made an uproar |
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| CN102209135A CN102209135A (en) | 2011-10-05 |
| CN102209135B true CN102209135B (en) | 2016-09-07 |
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| CN201110132375.XA Active CN102209135B (en) | 2011-05-20 | 2011-05-20 | For the device and method that mobile terminal fall wind is made an uproar |
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| WO (1) | WO2012159380A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104092801A (en) * | 2014-05-22 | 2014-10-08 | 中兴通讯股份有限公司 | Intelligent terminal call noise reduction method and intelligent terminal |
| CN104539819A (en) * | 2014-12-26 | 2015-04-22 | 贵州万臻时代通讯技术有限公司 | Method for restraining mobile communication terminal wind noise |
| US9721581B2 (en) | 2015-08-25 | 2017-08-01 | Blackberry Limited | Method and device for mitigating wind noise in a speech signal generated at a microphone of the device |
| CN108121527A (en) * | 2016-11-28 | 2018-06-05 | 天津三星电子有限公司 | A kind of method and electronic equipment for exporting audio |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1802873A (en) * | 2003-06-06 | 2006-07-12 | 索尼爱立信移动通讯股份有限公司 | Microphone noise reduction |
| CN1910653A (en) * | 2004-01-20 | 2007-02-07 | 皇家飞利浦电子股份有限公司 | Enhanced usage of telephones in noisy surroundings |
| CN101211558A (en) * | 2006-12-28 | 2008-07-02 | 海尔集团公司 | Active noise reduction method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2588714Y (en) * | 2002-05-31 | 2003-11-26 | 黄大伟 | Noise-eliminating earphone |
| CN101197870A (en) * | 2006-12-05 | 2008-06-11 | 乐金电子(中国)研究开发中心有限公司 | Mobile terminal with adjustable speech quality |
| JP2008263498A (en) * | 2007-04-13 | 2008-10-30 | Sanyo Electric Co Ltd | Wind noise reducing device, sound signal recorder and imaging apparatus |
| US8488803B2 (en) * | 2007-05-25 | 2013-07-16 | Aliphcom | Wind suppression/replacement component for use with electronic systems |
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- 2011-08-18 WO PCT/CN2011/078591 patent/WO2012159380A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1802873A (en) * | 2003-06-06 | 2006-07-12 | 索尼爱立信移动通讯股份有限公司 | Microphone noise reduction |
| CN1910653A (en) * | 2004-01-20 | 2007-02-07 | 皇家飞利浦电子股份有限公司 | Enhanced usage of telephones in noisy surroundings |
| CN101211558A (en) * | 2006-12-28 | 2008-07-02 | 海尔集团公司 | Active noise reduction method and device |
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| WO2012159380A1 (en) | 2012-11-29 |
| CN102209135A (en) | 2011-10-05 |
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