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WO2006017993A1 - Dispositif et procede d'elimination de bruit de fond pour un terminal de communication orale - Google Patents

Dispositif et procede d'elimination de bruit de fond pour un terminal de communication orale Download PDF

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Publication number
WO2006017993A1
WO2006017993A1 PCT/CN2005/001289 CN2005001289W WO2006017993A1 WO 2006017993 A1 WO2006017993 A1 WO 2006017993A1 CN 2005001289 W CN2005001289 W CN 2005001289W WO 2006017993 A1 WO2006017993 A1 WO 2006017993A1
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WO
WIPO (PCT)
Prior art keywords
signal
background noise
sound
receiver
output
Prior art date
Application number
PCT/CN2005/001289
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English (en)
Chinese (zh)
Inventor
Qiang Zhang
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP05774479A priority Critical patent/EP1768109A4/fr
Publication of WO2006017993A1 publication Critical patent/WO2006017993A1/fr

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques 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
    • 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

Definitions

  • the present invention relates to a communication terminal voice processing technology, and in particular to a device and method for eliminating background noise of a voice communication terminal. Background of the invention
  • both communication users often talk in some noisy background environment.
  • the sound heard by the recipient user includes not only the voice of the sender user, but also other voices around the sender and the receiver, such as voices of others, footsteps, collision of objects, music, and sounds from vehicles. .
  • These sounds other than the speech voices of the communication users are called background noise, the background noise around the sender's user is called the sender's background noise, and the background noise around the receiver's user is called the receiver's background noise.
  • FIG. 1 is a schematic diagram of a voice transmission process of a mobile communication terminal, wherein a sender microphone simultaneously receives a sender voice and a sender background noise, and after transmitting, encoding, transmitting, and decoding the received voice, transmitting to the receiver Headphones or speakers, the receiver listens to the transmitted sound through headphones or speakers, and also hears the receiver's background noise.
  • the speech receives double interference of the sender's background noise and the receiver's background noise during the transmission process.
  • the background noise masks the voice of the communicating speaker, making the recipient's listener unable to correctly acquire the voice information sent by the speaker, thereby causing communication difficulties.
  • FIG. 2 is a schematic structural diagram of a device for canceling a background noise of a sender in a mobile communication terminal of the prior art, including: a microphone 201, a sampling module 202, an adaptive filter 203, and a speech encoding module 204.
  • the microphone 201 receives the sender voice and the background noise, and then transmits the received sender voice and background noise to the sampling module 202.
  • the sample module 202 samples the sample, which is to be simulated.
  • the signal is converted into a digital signal, and the obtained digital signal is output to the adaptive filter 203; the adaptive filter 203 performs background noise cancellation on the received signal, and outputs the remaining speech signal to the speech encoding module 204; Speech encoding module 204 encodes the received speech signal.
  • x(n) is delayed by ⁇
  • the estimated value, and the estimated value (/7) is subtracted from the input signal x(n) to obtain an error signal e(n).
  • the subtraction operation is not a general algebraic subtraction, but requires a corresponding algorithm to perform operations, such as power spectral density analysis of the relevant power.
  • LMS Least Mean Square
  • W(n+1) W(n) + ⁇ ( ⁇ ) ⁇ ( ⁇ ) 0
  • ⁇ is the step factor when searching according to the minimum mean square error criterion.
  • the speech signals s(n) and s(nA) are strongly correlated, and the noise signals v(n) and ⁇ ( ⁇ - ⁇ ) are considered irrelevant, and the noise signal and the speech signal are also considered uncorrelated. .
  • a highly correlated component of the input signal ⁇ ( ⁇ ) can be estimated.
  • adjusting the weight of the filter » to minimize the mean square error of e(n) the best estimate of the speech signal s(n) under the minimum mean square error criterion can be obtained.
  • the prior art scheme for eliminating the background noise of the sender can reduce the interference of the background noise to the voice
  • the prior art only considers to eliminate the background noise of the sender, and does not perform any processing on the background noise of the receiver, ignoring the receiver.
  • the background noise interferes with the sound emitted by the receiver's earphones, especially when the receiver is in a noisy environment, and the receiver's background noise is particularly severe to the speaker's voice.
  • the method for the mobile communication terminal to overcome the background noise of the receiver is to increase the volume of the earphone. This method is limited by the maximum volume of the earphone, and the effect in the noisy environment is still poor.
  • the existing fixed communication terminal also has the above problems. Summary of the invention
  • the main object of the present invention is to provide a device for canceling the background noise of a voice communication terminal, which can perform noise cancellation processing on the background noise of the receiver and reduce interference of the receiver background noise on the receiver.
  • Another object of the present invention is to provide a method for canceling background noise of a voice communication terminal, which can reduce interference of receiver background noise to a receiver.
  • the present invention provides a device for canceling background noise of a voice communication terminal, the voice communication terminal including for converting an input sound signal into a player that plays sounds;
  • the device includes:
  • a sound sensing module configured to collect sound played by the player and background noise of the receiver, convert the sound into a sound signal, and output the sound signal;
  • An adaptive filter configured to calculate and output a noise signal contained in a sound signal of the sound sensing module according to the input sound signal from the sound sensing module and the voice signal from the transmitting side;
  • a noise estimation module configured to predict and output a receiver background noise signal according to the noise signal output by the adaptive filter
  • an adder module configured to inversely superimpose the receiver background noise signal output by the noise estimation module and the sender voice signal into the player of the voice communication terminal.
  • the signal output by the sound sensing module of the device is an analog signal; the device further includes: an A/D conversion module, configured to convert an analog signal output by the sound sensing module into a digital signal and input the Filter
  • the number of the sound sensing modules of the device is two or more.
  • the device further includes an inserter
  • the adder is located between the sound sensing module and the A/D conversion module, and is configured to superimpose and output the analog signals output by the plurality of sound sensing modules to the A/D conversion module;
  • the adder is located between the A/D conversion module and the adaptive filter, and is used for outputting the plurality of sound sensing modules to the A/D conversion module and performing analog-to-digital conversion by the A/D conversion module respectively.
  • the signals are superimposed and output to an adaptive filter.
  • the A/D conversion module of the device is an A/D conversion module for respectively performing analog-to-digital conversion on signals output by a plurality of sound sensing modules and outputting the signals to an adaptive filter respectively; Receiving multiple signals output by the A/D conversion module and filtering separately Wave adaptive filter.
  • the present invention provides a method for eliminating background noise of a voice communication terminal, including:
  • the estimated background noise signal of the receiver is reversed and then superimposed with the sender voice signal received by the voice communication terminal, and then played to the receiver user.
  • the method for collecting the sound signal in the method step a is: converting the collected sound into an analog signal and converting it into a digital signal through analog-to-digital conversion.
  • the sound collected in the method step a is divided into multiple channels, and after converting the collected sound into an analog signal, the method further includes:
  • multi-channel analog signals are subjected to analog-to-digital conversion, and the conversion results are superimposed; or the multi-channel analog signals are respectively subjected to analog-to-digital conversion, and respectively output.
  • the method step b includes: using the sender voice signal received by the voice communication terminal as a reference signal for adaptive filtering processing, using the adaptive filtering processing calculation step a to obtain the noise signal estimation value in the signal, and then using the noise signal estimation value The estimated value of the receiver's background noise signal is predicted.
  • the method for obtaining a noise signal by using adaptive filtering processing in the method is: obtaining an estimated value of the noise signal by using a minimum mean square error algorithm.
  • the signal obtained in step a of the method is multiplexed, and the multiple input signals are respectively adaptively filtered in step b, and the maximum value of the plurality of processing results obtained through the adaptive filtering process or all the processing results of the current time are selected. The sum is used as an estimate of the noise signal.
  • the method for predicting a receiver background noise signal estimate by the method is: current time
  • the background noise signal estimate is the sum of the background noise signal estimate at the previous moment and the noise signal estimate obtained through the adaptive filtering process.
  • the apparatus of the present invention mainly includes an adaptive filter and a noise estimation module for estimating background noise, and the background noise is estimated by the adaptive filter and the noise estimation module, and the background noise is used. After the estimated value is inverted, the voice signal is superimposed, and then the voice signal including the background noise estimate is played out through the earphone, so that the background noise estimate and the actual receiver background noise cancel each other, thereby obtaining the noise cancellation. Voice signal.
  • the apparatus and method for eliminating background noise of the voice communication terminal provided by the present invention can well cancel the background noise around the earphone, reduce the interference of the receiver background noise to the receiver, and make the receiving party have a small volume in the earphone.
  • the voice of the sender can be clearly heard.
  • FIG. 1 is a schematic diagram of a voice transmission process of a mobile communication terminal
  • FIG. 2 is a schematic structural diagram of a structure of a device for canceling a background noise of a sender in a mobile communication terminal of the prior art
  • FIG. 3 is a schematic structural diagram of an adaptive filter in a transmitter background noise canceling apparatus shown in FIG. 2;
  • FIG. 4 is a schematic structural diagram of an embodiment of a device for canceling a background noise of a receiver in a mobile communication terminal according to the present invention
  • FIG. 5 is a schematic structural diagram of an adaptive filter in an embodiment of the receiver background noise canceling apparatus shown in FIG. 4;
  • FIG. 5 is a schematic structural diagram of an adaptive filter in an embodiment of the receiver background noise canceling apparatus shown in FIG. 4;
  • FIG. 6 is a schematic diagram showing an arrangement manner of an earphone and a microphone in an embodiment of a receiving device background noise canceling apparatus according to the present invention
  • 7 is a flowchart of a method for implementing background noise for eliminating a voice communication terminal according to the present invention
  • Figure 8 is a block diagram showing the structure of an embodiment of a device for canceling background noise of a receiving side in a fixed communication terminal of the present invention. Mode for carrying out the invention
  • the voice communication terminal to which the present invention is applied should include a player for converting the input sound signal into sound for playback.
  • the device for eliminating background noise of a voice communication terminal mainly comprises: a sound sensing module, configured to collect sound played by a player of a voice communication terminal and background noise of a receiver, convert the collected sound into a sound signal and output; a filter, configured to calculate, according to the input sound signal from the sound sensing module and the voice signal from the sender, a noise signal contained in the sound signal of the sound sensing module, and output; a noise estimation module, configured to The noise signal output by the adaptive filter predicts the receiver background noise signal and outputs; the adder module is configured to inversely superimpose the receiver background noise signal output by the noise estimation module and the sender voice signal into the a player of the voice communication terminal.
  • the method for eliminating background noise of a voice communication terminal mainly includes the following steps: collecting a sound signal including a sender voice and a receiver background noise received by a receiver user; and estimating a receiver background from the obtained signal.
  • the noise signal is superimposed on the estimated background noise signal of the receiver and superimposed with the sender voice signal received by the voice communication terminal, and then played to the receiver user.
  • the structure of the device for canceling the background noise of the receiver in the mobile communication terminal of the preferred embodiment of the present invention includes: an adder module 401, a digital/analog (D/A) conversion module 402, an earphone 403, a microphone 405, Analog/digital (A/D) conversion module 406, adaptive filter 407 And a noise estimation module 408, wherein the earphone 403 and the digital/analog (D/A) conversion module 402 are existing devices in the mobile communication terminal.
  • the adder module 401 is configured to inversely superimpose the sender voice signal s(n) received by the communication terminal and the receiver background noise signal estimate value (7); the D/A conversion module 402 is configured to input the digital signal. Converting to an analog signal; the earphone 403 is configured to convert the input analog electrical signal into a sound signal for playing. In the present invention, the earphone 403 actually plays the voice signal from the sender and the opposite phase of the received background noise signal.
  • the speaker can also be used instead of the earphone;
  • the microphone 405 is used for receiving the user's voice signal and the background noise cancelled by the headphone output signal;
  • the A/D conversion module 406 is used to convert the analog signal into a digital signal;
  • Filter 407 is used to estimate the noise signal value in the acquired signal;
  • noise estimation module 408 is used to predict the estimated value of the background noise.
  • the sender voice signal s(n) received by the communication terminal is processed by the adder module 401 and then transmitted to the D/A conversion module 402, and the D/A conversion module 402 performs digital signal to analog signal conversion on the received signal, and
  • the converted analog signal is output to the earphone 403 as a player, and the earphone 403 converts the analog signal into a sound signal for playback.
  • the sound signal played by the earphone 403 is transmitted to the receiver user and the microphone 405 as the sound sensing module through the voice transmission channel 404, and the background noise V of the receiver is also transmitted to the receiver user and the microphone 405 through the voice transmission channel 404.
  • the microphone 405 converts the received sound signal into an analog signal X and sends it to the A/D conversion module 406.
  • the signal X includes the sender's voice signal and the receiver noise signal.
  • the A/D conversion module 406 samples the analog signal and The converted value signal x(n) is sent to the adaptive filter 407; the adaptive filter 407 performs adaptive filtering with the speech signal s(n) as a reference input, and the estimated value noise estimation module 408 of the estimated noise signal is based on the noise signal.
  • the estimated value predicts the estimated value of the background noise signal and sends the background noise estimate
  • the adder module 401 is provided.
  • the A/D conversion module 406 is not necessary, for example: if the adaptive filter 407, the noise estimation module 408, and the like can process the analog signal, the A/D conversion module 406 does not have to be set; in addition, if the microphone 405 can The digital signal is directly output, and it is not necessary to set the A/D conversion module 406.
  • the adder module 401 superimposes the estimated value of the received background noise signal with the transmitted speech signal s(n) to obtain a signal s(n) - ⁇ ( ⁇ ), and outputs the signal to the D/A.
  • the conversion module 402 is played back through the earphone 403.
  • the inverse phase of the received background noise signal estimate - ⁇ ) and the receiver background noise V cancel each other in the voice transmission channel 404 such that the sound transmitted to the recipient user and the microphone 405 is primarily the sender's voice signal.
  • the specific structure of the adaptive filter 407 is shown in FIG.
  • the mixed digital signal x(n) received via the microphone including the sender speech signal s(n) and the background noise signal passes through the filter portion of the adaptive filter 407 to recover the best estimate of the transmitted speech signal)
  • the best estimated value of the speech signal is subtracted from the delayed signal s(nA) of the transmitted speech signal s(n) received by the mobile terminal through the antenna to obtain the obtained error signal.
  • the signal is not correlated with the background noise signal.
  • Adjusting the weight of the filter w » to minimize the mean square error the best estimate of the speech signal s(n) in ⁇ ( ⁇ ) under the minimum mean square error criterion can be obtained.
  • W is the best estimate of the residual noise signal after the background noise is cancelled.
  • ⁇ is the delay of the speech signal, which can be searched according to the minimum mean square error criterion.
  • the adaptive filter 407 can also Use other adaptive algorithms and best practices.
  • the noise estimation module 408 predicts the current background based on the best estimate of the noise signal Noise estimate.
  • the number of headphones 403 and microphone 405 can be set to be plural, and the number of headphones and microphones can be different.
  • the position of the microphone is in the area where it is desired to cancel the noise.
  • the area where it is usually desired to cancel the noise is around the earphone on the receiving side, but there are exceptions in other applications, such as: When sleeping, if the mobile phone is only used as a tool to reduce the surrounding noise, This area can be larger.
  • the distribution method shown in Fig. 6 can be adopted. Among them, the earphone is in the middle, and the three microphones are distributed at an angle of 120 degrees around the earphone.
  • Signals received simultaneously by multiple microphones may be superimposed and transmitted to the adaptive filter, or separately transmitted to the adaptive filter and then processed by the adaptive filter separately. If superimposition is required, the corresponding position in the device of the present invention is required.
  • Add a stacker For example: the output signals of multiple microphones can be superimposed before A/D conversion, then the adder is set between the microphone and the A/D conversion module; or it can be superimposed after A/D conversion. The adder is disposed between the A/D conversion module and the adaptive filter.
  • the output signals of the plurality of microphones can also be separately sent to the adaptive filter for processing after performing A/D conversion.
  • the present invention also provides a background noise canceling method for a receiving party voice communication terminal, as shown in Fig. 7, comprising the following steps:
  • Step 701 Collecting a sound to be heard by the user of the receiving party, including a sound emitted by the earphone of the voice communication terminal and a background noise of the receiving side, and converting the collected sound into a sound signal and performing A/D conversion.
  • the microphones for collecting sound signals may be one or more, that is, the collected signals may be one or more channels. Multiple microphones can be used when acquiring signals using multiple microphones.
  • the signals of the wind output are first superimposed, and then A/D is converted and outputted.
  • the signals output by the plurality of microphones may be respectively A/D-converted and then superimposed and outputted; or the signals output by the plurality of microphones may be separately Perform A/D conversion and output separately.
  • the A/D conversion process is also not necessary, for example: if the subsequent adaptive filtering, noise estimation, etc. processing can be performed based on the analog signal, the A/D conversion is not necessary here; in addition, if the microphone can directly output the digital The signal does not have to be subjected to the A/D conversion.
  • Step 702 The sender voice signal is used as a reference input, and the collected digital sound signal is adaptively filtered to estimate a noise signal therein.
  • the adaptive filter may adopt an LMS algorithm or adopt another adaptive algorithm and most Good guidelines.
  • Step 704 The predicted background actual signal noise signal is inversely phase-phased and superimposed with the sender voice signal, and output through the earphone.
  • Step 705 The sound outputted by the earphone and the background noise of the receiver are superimposed during the voice transmission to cancel the background noise therein, and the receiver user obtains the noise of the sender after the noise cancellation.
  • the solution of the invention can also be applied to a fixed voice communication terminal, and the implementation thereof is only different in that: since the existing fixed communication terminal receiver receives the analog signal from the sender, it is necessary to first convert the received analog signal. A digital signal is then used for noise estimation and noise cancellation. Referring to Figure 8, it is necessary to add an A/D conversion module 800 before the sender's voice signal input terminal for converting the input analog signal into a digital signal.
  • the present invention can obtain residual noise after noise cancellation through adaptive filtering processing, and then continuously superimposes by noise prediction processing, and can estimate the background noise of the receiver, and then use the estimated receiver background.
  • the noise is cancelled by the actual receiver background noise, which reduces the interference of the background noise to the receiver.

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  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Telephone Function (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

L'invention porte sur un dispositif d'élimination de bruit de fond pour un terminal de communication orale, comprenant un détecteur de son, un filtre adaptatif, un estimateur de bruit et un additionneur reliés successivement. Elle porte aussi sur un procédé d'élimination de bruit de fond pour un terminal de communication orale consistant à recueillir le signal sonore entendu par le récepteur qui comprend la parole de l'émetteur et le bruit de fond au niveau du récepteur, à estimer le signal de bruit de fond au niveau du récepteur à partir du signal obtenu au cours de l'étape a, à ajouter le signal de bruit de fond estimé au niveau du récepteur après la phase d'inversion du signal de parole de l'émetteur reçu par le terminal de communication orale, et à lire le signal ajouté dans le récepteur.
PCT/CN2005/001289 2004-08-18 2005-08-18 Dispositif et procede d'elimination de bruit de fond pour un terminal de communication orale WO2006017993A1 (fr)

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Application Number Priority Date Filing Date Title
EP05774479A EP1768109A4 (fr) 2004-08-18 2005-08-18 Dispositif et procede d'elimination de bruit de fond pour un terminal de communication orale

Applications Claiming Priority (2)

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CN200410058578.9 2004-08-18
CNB2004100585789A CN100337270C (zh) 2004-08-18 2004-08-18 一种语音通信终端背景噪声的消除装置及方法

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Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1822092B (zh) * 2006-03-28 2010-05-26 北京中星微电子有限公司 一种消除语音输入中背景噪声的方法及其装置
JP5564743B2 (ja) * 2006-11-13 2014-08-06 ソニー株式会社 ノイズキャンセル用のフィルタ回路、ノイズ低減信号生成方法、およびノイズキャンセリングシステム
CN101193139B (zh) * 2006-11-20 2011-11-30 鸿富锦精密工业（深圳）有限公司 一种可滤除环境音的方法及其手机
GB0725111D0 (en) * 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Lower rate emulation
DE102008026232B4 (de) 2008-05-29 2023-11-23 Volkswagen Ag Verfahren und Vorrichtung zur Steuerung eines Batterie-Lüfters in einem Kraftfahrzeug
CN201616843U (zh) * 2010-03-18 2010-10-27 华为终端有限公司 能够降低噪音的音频装置和降噪手机
WO2011151842A1 (fr) * 2010-06-03 2011-12-08 Rajmohan Harindranath Procédé et dispositif d'atténuation permettant d'éviter une écoute clandestine dans un dispositif électronique
CN101894562A (zh) * 2010-07-02 2010-11-24 中兴通讯股份有限公司 降低环境噪音对音频影响的方法及终端
CN102044252B (zh) * 2010-09-23 2012-12-19 瑞声声学科技(深圳)有限公司 消噪装置及方法
CN102075599A (zh) * 2011-01-07 2011-05-25 蔡镇滨 一种降低环境噪声的装置及方法
CN102163431A (zh) * 2011-03-23 2011-08-24 冠捷显示科技（厦门）有限公司 应用前向噪声补偿提高hdtv音频质量的方法
CN102185992B (zh) * 2011-04-08 2013-04-10 罗迒哉 一种用于手机的双向有源降噪装置
CN102970050B (zh) * 2011-08-31 2016-04-20 瑞昱半导体股份有限公司 网络信号接收系统及网络信号接收方法
TWI492622B (zh) 2011-08-31 2015-07-11 Realtek Semiconductor Corp 網路訊號接收系統與網路訊號接收方法
CN103680510B (zh) * 2012-09-11 2016-06-29 华为终端有限公司 降噪处理方法及装置
WO2014057406A1 (fr) * 2012-10-09 2014-04-17 Koninklijke Philips N.V. Procédé et appareil pour l'estimation d'interférences audio
CN103310797B (zh) * 2013-06-28 2015-08-26 姜鸿彦 噪声与语音信号提取装置
CN103310796B (zh) * 2013-06-28 2016-06-08 姜鸿彦 语音信号提取方法
US9445184B2 (en) 2013-12-03 2016-09-13 Bose Corporation Active noise reduction headphone
CN103873975B (zh) * 2014-03-20 2016-11-23 努比亚技术有限公司 一种实现蓝牙耳机降噪的方法、装置和系统
CN104681022B (zh) * 2014-12-25 2018-09-21 中国科学院信息工程研究所 一种声压消除器、声压消除系统及方法
CN104900237B (zh) * 2015-04-24 2019-07-05 上海聚力传媒技术有限公司 一种用于对音频信息进行降噪处理的方法、装置和系统
CN106548781A (zh) * 2015-09-21 2017-03-29 上海日趋信息技术有限公司 一种用于语音识别系统消除背景噪音的方法
CN105261359B (zh) * 2015-12-01 2018-11-09 南京师范大学 手机麦克风的消噪系统和消噪方法
CN105979464A (zh) * 2016-05-13 2016-09-28 深圳市豪恩声学股份有限公司 电声换能器不良诊断的预处理装置及方法
WO2018050787A1 (fr) * 2016-09-16 2018-03-22 Avatronics Sàrl Système d'annulation active de bruit pour casque d'écoute
CN107967919A (zh) * 2016-10-19 2018-04-27 展讯通信（上海）有限公司 消除tdd噪声的方法、装置及移动终端
CN106448696A (zh) * 2016-12-20 2017-02-22 成都启英泰伦科技有限公司 一种基于背景噪声估计自适应高通滤波语音降噪方法
CN108962241B (zh) * 2018-06-27 2021-04-02 Oppo广东移动通信有限公司 位置提示方法、装置、存储介质及电子设备
CN109166589B (zh) * 2018-08-13 2024-08-20 深圳市腾讯网络信息技术有限公司 应用声音抑制方法、装置、介质以及设备
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CN111383654A (zh) * 2020-04-07 2020-07-07 东莞市凌毅电子商务有限公司 一种消除音频指示灯上环境噪音干扰的方法
CN113571035B (zh) 2021-06-18 2022-06-21 荣耀终端有限公司 降噪方法及降噪装置
CN113793619B (zh) * 2021-07-27 2023-10-13 江汉大学 一种语音增强方法、装置以及处理设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991015896A1 (fr) 1990-04-09 1991-10-17 Active Noise And Vibration Technologies, Inc. Systeme de suppression de bruit
WO1994002935A1 (fr) 1992-07-22 1994-02-03 Sinvent A/S Procede et dispositif de reduction active du bruit dans une zone locale
EP0661903A2 (fr) 1993-12-29 1995-07-05 Nec Corporation Appareil téléphonique avec fonction de suppression du bruit de fond
CN2256610Y (zh) * 1996-05-31 1997-06-18 绍兴市华越通讯设备有限公司 语音接收系统背景噪声消除装置
CN1152830A (zh) * 1995-07-24 1997-06-25 松下电器产业株式会社 噪声受控型手机
CN1415139A (zh) * 1999-11-03 2003-04-30 艾利森电话股份有限公司 用于通信信号中噪声抑制的系统和方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5251263A (en) * 1992-05-22 1993-10-05 Andrea Electronics Corporation Adaptive noise cancellation and speech enhancement system and apparatus therefor
US5625684A (en) * 1993-02-04 1997-04-29 Local Silence, Inc. Active noise suppression system for telephone handsets and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991015896A1 (fr) 1990-04-09 1991-10-17 Active Noise And Vibration Technologies, Inc. Systeme de suppression de bruit
WO1994002935A1 (fr) 1992-07-22 1994-02-03 Sinvent A/S Procede et dispositif de reduction active du bruit dans une zone locale
EP0661903A2 (fr) 1993-12-29 1995-07-05 Nec Corporation Appareil téléphonique avec fonction de suppression du bruit de fond
CN1152830A (zh) * 1995-07-24 1997-06-25 松下电器产业株式会社 噪声受控型手机
CN2256610Y (zh) * 1996-05-31 1997-06-18 绍兴市华越通讯设备有限公司 语音接收系统背景噪声消除装置
CN1415139A (zh) * 1999-11-03 2003-04-30 艾利森电话股份有限公司 用于通信信号中噪声抑制的系统和方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1768109A4 *

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EP1768109A1 (fr) 2007-03-28

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