EP2530673B1 - Equipement audio comprenant des moyens de débruitage d'un signal de parole par filtrage à délai fractionnaire - Google Patents

Equipement audio comprenant des moyens de débruitage d'un signal de parole par filtrage à délai fractionnaire Download PDF

Info

Publication number
EP2530673B1
EP2530673B1 EP12170407.6A EP12170407A EP2530673B1 EP 2530673 B1 EP2530673 B1 EP 2530673B1 EP 12170407 A EP12170407 A EP 12170407A EP 2530673 B1 EP2530673 B1 EP 2530673B1
Authority
EP
European Patent Office
Prior art keywords
speech
signal
filter
equipment
noise
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP12170407.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2530673A1 (fr
Inventor
Guillaume Vitte
Michael Herve
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Parrot SA
Original Assignee
Parrot SA
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 Parrot SA filed Critical Parrot SA
Publication of EP2530673A1 publication Critical patent/EP2530673A1/fr
Application granted granted Critical
Publication of EP2530673B1 publication Critical patent/EP2530673B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
    • G10L2021/02165—Two microphones, one receiving mainly the noise signal and the other one mainly the speech signal

Definitions

  • microphones include one or more microphones (“microphones”) sensitive, capturing not only the voice of the user, but also the surrounding noise, noise that is a disruptive element that can go in some cases to make unintelligible the speaker's words . It is the same if one wants to implement speech recognition techniques, because it is very difficult to perform a form recognition on words embedded in a high noise level.
  • the device is a headset type microphone / headset combined used for communication functions such as "hands-free" telephony functions, in addition to listening to a source audio (music for example) from a device to which the headphones are connected.
  • the headset can be used in a noisy environment (metro, busy street, train, etc.), so that the microphone will not only pick up the word of the wearer of the helmet, but also the noise surrounding.
  • the wearer is certainly protected from this noise by the helmet, especially if it is a model with closed earphones isolating the ear from the outside, and even more if the headset is provided with an "active control of noise”.
  • the distant speaker (the one at the other end of the communication channel) will suffer from the noise picked up by the microphone and being superimposed and interfere with the speech signal of the near speaker (the helmet wearer).
  • certain speech formers essential to the understanding of the voice are often embedded in noise components commonly encountered in the usual environments.
  • the invention relates more particularly to denoising techniques using several microphones, usually two microphones, to judiciously combine the signals picked up simultaneously by these microphones in order to isolate the useful speech components of the noise noise components.
  • this technique has the disadvantage of requiring two remote microphones, the efficiency being even higher than the two microphones are remote. Therefore, this technique is not applicable to a device in which the two microphones are close together, for example two microphones incorporated in the facade of a car radio, or two microphones that would be arranged on one of the shells an earphone.
  • the invention proposes audio equipment of the general type disclosed by the US 2008/0280653 A1 above, that is to say comprising: a set of two microphonic sensors able to collect the speech of the user of the equipment and to deliver respective noisy speech signals; means for sampling the speech signals delivered by the microphone sensors; and means for denoising a speech signal, receiving as input the samples of the speech signals delivered by the two microphonic sensors, and outputting a speech signal that is not representative of the speech transmitted by the user of the equipment .
  • the adaptive filter is a LMS mean least squares linear prediction algorithm filter.
  • the equipment comprises a video camera directed towards the user of the equipment and able to capture an image thereof
  • the voice activity detection means comprise suitable video analysis means. analyzing the image produced by the camera and responding in response to said presence or absence of speech signal by said user.
  • the equipment may in particular be a headset of the combined microphone / headset type, comprising: headphones each comprising a sound reproduction transducer of an audio signal housed in a shell provided with a circumaural pad; said two microphone sensors, arranged on the shell of one of the earphones; and said physiological sensor, incorporated in the pad of one of the earphones and placed in a region thereof able to come into contact with the cheek or temple of the wearer of the helmet.
  • These two microphonic sensors are preferably aligned in a linear array in a main direction directed towards the mouth of the user of the equipment.
  • the Figure 1 schematically illustrates, in block form, the various functions implemented by the invention.
  • the signal that is desired to be denoised originates from a network of microphone sensors which, in the minimum configuration illustrated, may simply be an array of two sensors arranged in a predetermined configuration, each sensor consisting of a corresponding respective microphone 10 , 12.
  • the invention may, however, be generalized to a network of more than two microphone sensors, and / or to microphonic sensors, each sensor of which is constituted by a more complex structure than a simple microphone, for example a combination of several microphones and / or or other speech sensors.
  • the microphones 10, 12 are microphones that pick up the signal emitted by the useful signal source (the speech signal from the speaker), and the difference in position between the two microphones induces a set of phase shifts and amplitude variations in the microphone. recording the signals emitted by the useful signal source.
  • the useful signal source the speech signal from the speaker
  • the two microphones 10, 12 are omnidirectional microphones placed a few centimeters apart from each other on the ceiling of a car interior, on the front of a car radio or in an appropriate location on the car. dashboard, or on the shell of one of the headphones headphones, etc.
  • This noise reduction is effected by means of an algorithm seeking the transfer function between one of the microphones (for example the microphone 10) and the other microphone (the microphone 12) by means of an adaptive combiner 14 setting A predictive filter 16 of LMS ( Least Mean Squares ) type is used.
  • the output of the filter 16 is subtracted at 18 from the signal of the microphone 10 to give a signal S de-noised, applied back to the filter 16 to allow its iterative adaptation as a function of the prediction error. It is thus possible to predict from the signal picked up by the microphone 12 the noise component contained in the signal picked up by the microphone 10 (the transfer function identifying the noise transfer).
  • the adaptive search of the transfer function between the two microphones is performed only during the speech-free phases. For this, the iterative adaptation of the filter 16 is activated only when a voice activity detector VAD ( Voice Activity Detector ) 20 controlled by a sensor 22 indicates that the near speaker is not speaking.
  • VAD Voice Activity Detector
  • the adaptive combiner 14 seeks to optimize the transfer function between the two microphones 10 and 12 so as to reduce the noise component (closed position of the switch 24, as shown in the figure); on the other hand, in the presence of a speech signal confirmed by the voice activity detector 20, the adaptive combiner 14 freezes the parameters of the filter 16 to the value at which they were just before the speech was detected (opening of the switch 24), which avoids any degradation of the speech signal of the nearby speaker.
  • the filtering of the adaptive combiner 14 is a fractional delay filtering, that is to say that it makes it possible to apply a filtering between the signals picked up by the two microphones taking into account the a delay less than the duration of a sample digitizing signals.
  • the interval or offset between two samples corresponds temporally to a duration of Te second.
  • the Figure 3a gives a graphic representation of this function.
  • MicAvant (n) and MicRear (n) being the respective values of the signals from the microphonic sensors 10 and 12.
  • the estimation of ⁇ takes place directly, by the minimization of the error e ( n ) above, without there being need to estimate separately ⁇ and F.
  • L being the length of the filter.
  • the prediction of the filter H gives a fractional delay filter which, ideally and in the absence of speech, cancels the noise of the microphone 10 with reference to the microphone 12 (as indicated above, during speech however, the filter is frozen to prevent any degradation of local speech).
  • the Figure 4 illustrates an example of acoustic response between the two microphones, in the form of a characteristic giving the amplitude A as a function of the coefficients k of the filter F.
  • the different sound reflections that may occur depending on the environment, for example on the windows or other walls of a car interior, create visible peaks on this acoustic response characteristic.
  • the Figure 5 illustrates an example of the result of the convolution G X F of the two filters G (cardinal sinus response) and F (environment of use), in the form of a characteristic giving the amplitude A as a function of the coefficients k of the convoluted filter.
  • the estimate ⁇ can be calculated by an iterative LMS algorithm seeking to minimize the error y (n) - ⁇ X x ( n ) to converge towards the optimal filter.
  • the voice activity detector is here preferably a "perfect” detector, that is to say it delivers a binary signal (absence vs. presence of speech). It is thus distinguished from most voice activity detectors used in known denoising systems, which deliver only a probability of presence of variable speech between 0 and 100% continuously or in successive steps. With such detectors based only on the probability of speech, false detections can be important in noisy environments. To be “perfect”, the voice activity detector can not rely solely on the signal picked up by the microphones; it must have additional information to discriminate the speech and silence phases of the next speaker.
  • a first example of such a detector is illustrated by the Figure 6 , where the voice activity detector 20 operates in response to the signal produced by a camera.
  • This camera is for example a camera 26 installed in the passenger compartment of a motor vehicle, and oriented so that its field of view 28 encompasses in all circumstances the driver's head 30, considered as the close speaker.
  • the signal delivered by the camera 26 is analyzed to determine from the movement of the mouth and lips whether the speaker speaks or not.
  • Video data is added to conventional audio data to improve speech enhancement .
  • This treatment may be used in the context of the present invention to distinguish between the speech phases and the silence phases of the speaker.
  • the advantage of this image analysis technique is to have complementary information completely independent of the acoustic noise environment.

Landscapes

  • 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)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)
EP12170407.6A 2011-06-01 2012-06-01 Equipement audio comprenant des moyens de débruitage d'un signal de parole par filtrage à délai fractionnaire Active EP2530673B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1154825A FR2976111B1 (fr) 2011-06-01 2011-06-01 Equipement audio comprenant des moyens de debruitage d'un signal de parole par filtrage a delai fractionnaire, notamment pour un systeme de telephonie "mains libres"

Publications (2)

Publication Number Publication Date
EP2530673A1 EP2530673A1 (fr) 2012-12-05
EP2530673B1 true EP2530673B1 (fr) 2013-07-10

Family

ID=44533268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12170407.6A Active EP2530673B1 (fr) 2011-06-01 2012-06-01 Equipement audio comprenant des moyens de débruitage d'un signal de parole par filtrage à délai fractionnaire

Country Status (6)

Country Link
US (1) US8682658B2 (zh)
EP (1) EP2530673B1 (zh)
JP (1) JP6150988B2 (zh)
CN (1) CN103002170B (zh)
ES (1) ES2430121T3 (zh)
FR (1) FR2976111B1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106157963A (zh) * 2015-04-08 2016-11-23 广州质音通讯技术有限公司 一种音频信号的降噪处理方法和装置及电子设备

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2974655B1 (fr) * 2011-04-26 2013-12-20 Parrot Combine audio micro/casque comprenant des moyens de debruitage d'un signal de parole proche, notamment pour un systeme de telephonie "mains libres".
US20140025374A1 (en) * 2012-07-22 2014-01-23 Xia Lou Speech enhancement to improve speech intelligibility and automatic speech recognition
US9135915B1 (en) * 2012-07-26 2015-09-15 Google Inc. Augmenting speech segmentation and recognition using head-mounted vibration and/or motion sensors
US9685171B1 (en) * 2012-11-20 2017-06-20 Amazon Technologies, Inc. Multiple-stage adaptive filtering of audio signals
CN103871419B (zh) * 2012-12-11 2017-05-24 联想(北京)有限公司 一种信息处理方法及电子设备
FR3002679B1 (fr) * 2013-02-28 2016-07-22 Parrot Procede de debruitage d'un signal audio par un algorithme a gain spectral variable a durete modulable dynamiquement
US9185199B2 (en) 2013-03-12 2015-11-10 Google Technology Holdings LLC Method and apparatus for acoustically characterizing an environment in which an electronic device resides
US20150199950A1 (en) * 2014-01-13 2015-07-16 DSP Group Use of microphones with vsensors for wearable devices
FR3021180B1 (fr) * 2014-05-16 2016-06-03 Parrot Casque audio a controle actif de bruit anc avec prevention des effets d'une saturation du signal microphonique "feedback"
US9953640B2 (en) 2014-06-05 2018-04-24 Interdev Technologies Inc. Systems and methods of interpreting speech data
US10163453B2 (en) 2014-10-24 2018-12-25 Staton Techiya, Llc Robust voice activity detector system for use with an earphone
JP6501259B2 (ja) * 2015-08-04 2019-04-17 本田技研工業株式会社 音声処理装置及び音声処理方法
EP3147896B1 (en) * 2015-09-25 2023-05-31 Harman Becker Automotive Systems GmbH Active road noise control system with overload detection of primary sense signal
EP3557576B1 (en) * 2016-12-16 2022-12-07 Nippon Telegraph and Telephone Corporation Target sound emphasis device, noise estimation parameter learning device, method for emphasizing target sound, method for learning noise estimation parameter, and program
US10930298B2 (en) * 2016-12-23 2021-02-23 Synaptics Incorporated Multiple input multiple output (MIMO) audio signal processing for speech de-reverberation
US10366708B2 (en) * 2017-03-20 2019-07-30 Bose Corporation Systems and methods of detecting speech activity of headphone user
US10311889B2 (en) * 2017-03-20 2019-06-04 Bose Corporation Audio signal processing for noise reduction
JP6821126B2 (ja) * 2017-05-19 2021-01-27 株式会社Ｊｖｃケンウッド ノイズ除去装置、ノイズ除去方法およびノイズ除去プログラム
CN108810692A (zh) * 2018-05-25 2018-11-13 会听声学科技（北京）有限公司 主动降噪系统、主动降噪方法及耳机
US10455319B1 (en) * 2018-07-18 2019-10-22 Motorola Mobility Llc Reducing noise in audio signals
JP2020144204A (ja) * 2019-03-06 2020-09-10 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ 信号処理装置及び信号処理方法
CN110049395B (zh) * 2019-04-25 2020-06-05 维沃移动通信有限公司 耳机控制方法及耳机设备
US11871190B2 (en) 2019-07-03 2024-01-09 The Board Of Trustees Of The University Of Illinois Separating space-time signals with moving and asynchronous arrays
US11227587B2 (en) * 2019-12-23 2022-01-18 Peiker Acustic Gmbh Method, apparatus, and computer-readable storage medium for adaptive null-voice cancellation
CN112822592B (zh) * 2020-12-31 2022-07-12 青岛理工大学 一种可定向聆听的有源降噪耳机及控制方法
CN115914910A (zh) 2021-08-17 2023-04-04 达发科技股份有限公司 适应性主动噪声消除装置以及使用其的声音播放系统
TWI777729B (zh) * 2021-08-17 2022-09-11 達發科技股份有限公司 適應性主動雜訊消除裝置以及使用其之聲音播放系統
TWI790718B (zh) * 2021-08-19 2023-01-21 宏碁股份有限公司 會議終端及用於會議的回音消除方法
CN113744735A (zh) * 2021-09-01 2021-12-03 青岛海尔科技有限公司 一种分布式唤醒方法及系统
CN115132220B (zh) * 2022-08-25 2023-02-28 深圳市友杰智新科技有限公司 抑制电视噪声的双麦唤醒的方法、装置、设备及存储介质

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672665A (en) * 1984-07-27 1987-06-09 Matsushita Electric Industrial Co. Ltd. Echo canceller
US5574824A (en) * 1994-04-11 1996-11-12 The United States Of America As Represented By The Secretary Of The Air Force Analysis/synthesis-based microphone array speech enhancer with variable signal distortion
US5694474A (en) * 1995-09-18 1997-12-02 Interval Research Corporation Adaptive filter for signal processing and method therefor
US5761318A (en) * 1995-09-26 1998-06-02 Nippon Telegraph And Telephone Corporation Method and apparatus for multi-channel acoustic echo cancellation
US5774562A (en) * 1996-03-25 1998-06-30 Nippon Telegraph And Telephone Corp. Method and apparatus for dereverberation
FI114422B (fi) * 1997-09-04 2004-10-15 Nokia Corp Lähteen puheaktiviteetin tunnistus
US7072831B1 (en) * 1998-06-30 2006-07-04 Lucent Technologies Inc. Estimating the noise components of a signal
US6453285B1 (en) * 1998-08-21 2002-09-17 Polycom, Inc. Speech activity detector for use in noise reduction system, and methods therefor
US6289309B1 (en) * 1998-12-16 2001-09-11 Sarnoff Corporation Noise spectrum tracking for speech enhancement
US7062049B1 (en) * 1999-03-09 2006-06-13 Honda Giken Kogyo Kabushiki Kaisha Active noise control system
JP2000312395A (ja) * 1999-04-28 2000-11-07 Alpine Electronics Inc マイクロホンシステム
US7117145B1 (en) * 2000-10-19 2006-10-03 Lear Corporation Adaptive filter for speech enhancement in a noisy environment
US7206418B2 (en) * 2001-02-12 2007-04-17 Fortemedia, Inc. Noise suppression for a wireless communication device
US7617099B2 (en) * 2001-02-12 2009-11-10 FortMedia Inc. Noise suppression by two-channel tandem spectrum modification for speech signal in an automobile
DE10118653C2 (de) * 2001-04-14 2003-03-27 Daimler Chrysler Ag Verfahren zur Geräuschreduktion
JP3568922B2 (ja) * 2001-09-20 2004-09-22 三菱電機株式会社 エコー処理装置
US6937980B2 (en) * 2001-10-02 2005-08-30 Telefonaktiebolaget Lm Ericsson (Publ) Speech recognition using microphone antenna array
US7167568B2 (en) * 2002-05-02 2007-01-23 Microsoft Corporation Microphone array signal enhancement
CN1328707C (zh) * 2002-07-19 2007-07-25 日本电气株式会社 音频解码设备以及解码方法
US7949522B2 (en) * 2003-02-21 2011-05-24 Qnx Software Systems Co. System for suppressing rain noise
US8073689B2 (en) * 2003-02-21 2011-12-06 Qnx Software Systems Co. Repetitive transient noise removal
CA2473195C (en) * 2003-07-29 2014-02-04 Microsoft Corporation Head mounted multi-sensory audio input system
JP4496379B2 (ja) * 2003-09-17 2010-07-07 財団法人北九州産業学術推進機構 分割スペクトル系列の振幅頻度分布の形状に基づく目的音声の復元方法
JP2005249816A (ja) * 2004-03-01 2005-09-15 Internatl Business Mach Corp <Ibm> 信号強調装置、方法及びプログラム、並びに音声認識装置、方法及びプログラム
JP2006039267A (ja) * 2004-07-28 2006-02-09 Nissan Motor Co Ltd 音声入力装置
US7533017B2 (en) * 2004-08-31 2009-05-12 Kitakyushu Foundation For The Advancement Of Industry, Science And Technology Method for recovering target speech based on speech segment detection under a stationary noise
US7844059B2 (en) * 2005-03-16 2010-11-30 Microsoft Corporation Dereverberation of multi-channel audio streams
CN1809105B (zh) * 2006-01-13 2010-05-12 北京中星微电子有限公司 适用于小型移动通信设备的双麦克语音增强方法及系统
FR2898209B1 (fr) 2006-03-01 2008-12-12 Parrot Sa Procede de debruitage d'un signal audio
FR2908003B1 (fr) * 2006-10-26 2009-04-03 Parrot Sa Procede de reduction de l'echo acoustique residuel apres supression d'echo dans un dispositif"mains libres"
US7983428B2 (en) * 2007-05-09 2011-07-19 Motorola Mobility, Inc. Noise reduction on wireless headset input via dual channel calibration within mobile phone
US8175291B2 (en) * 2007-12-19 2012-05-08 Qualcomm Incorporated Systems, methods, and apparatus for multi-microphone based speech enhancement
US8577677B2 (en) * 2008-07-21 2013-11-05 Samsung Electronics Co., Ltd. Sound source separation method and system using beamforming technique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106157963A (zh) * 2015-04-08 2016-11-23 广州质音通讯技术有限公司 一种音频信号的降噪处理方法和装置及电子设备
CN106157963B (zh) * 2015-04-08 2019-10-15 质音通讯科技（深圳）有限公司 一种音频信号的降噪处理方法和装置及电子设备

Also Published As

Publication number Publication date
US8682658B2 (en) 2014-03-25
FR2976111B1 (fr) 2013-07-05
FR2976111A1 (fr) 2012-12-07
US20120310637A1 (en) 2012-12-06
CN103002170B (zh) 2016-01-06
JP2012253771A (ja) 2012-12-20
JP6150988B2 (ja) 2017-06-21
ES2430121T3 (es) 2013-11-19
EP2530673A1 (fr) 2012-12-05
CN103002170A (zh) 2013-03-27

Similar Documents

Publication Publication Date Title
EP2530673B1 (fr) Equipement audio comprenant des moyens de débruitage d&#39;un signal de parole par filtrage à délai fractionnaire
EP2518724B1 (fr) Combiné audio micro/casque comprenant des moyens de débruitage d&#39;un signal de parole proche, notamment pour un système de téléphonie &#34;mains libres&#34;
EP2680262B1 (fr) Procédé de débruitage d&#39;un signal acoustique pour un dispositif audio multi-microphone opérant dans un milieu bruité
EP2057835B1 (fr) Procédé de réduction de l&#39;écho acoustique résiduel après suppression d&#39;écho dans un dispositif &#34;mains libres&#34;
EP2293594B1 (fr) Procédé de filtrage des bruits latéraux non-stationnaires pour un dispositif audio multi-microphone, notamment un dispositif téléphonique &#34;mains libres&#34; pour véhicule automobile
EP2309499B1 (fr) Procédé de filtrage optimisé des bruits non stationnaires captés par un dispositif audio multi-microphone, notamment un dispositif téléphonique &#34;mains libres&#34; pour véhicule automobile
EP2538409B1 (fr) Procédé de débruitage pour équipement audio multi-microphones, notamment pour un système de téléphonie &#34;mains libres&#34;
EP2772916B1 (fr) Procédé de débruitage d&#39;un signal audio par un algorithme à gain spectral variable à dureté modulable dynamiquement
CH702399A2 (fr) Appareil et procédé pour la saisie et le traitement de la voix.
EP0998166A1 (fr) Dispositif de traitement audio récepteur et procédé pour filtrer un signal utile et le restituer en présence de bruit ambiant
EP0752181A1 (fr) Annuleur d&#39;echo acoustique a filtre adaptatif et passage dans le domaine frequentiel
EP0884926B1 (fr) Procédé et dispositif de traitement optimisé d&#39;un signal perturbateur lors d&#39;une prise de son
FR2906070A1 (fr) Reduction de bruit multi-reference pour des applications vocales en environnement automobile
FR3009121A1 (fr) Procede de suppression de la reverberation tardive d&#39;un signal sonore
WO2017207286A1 (fr) Combine audio micro/casque comprenant des moyens de detection d&#39;activite vocale multiples a classifieur supervise
EP0989544A1 (fr) Dispositif et procédé de filtrage d&#39;un signal de parole, récepteur et système de communications téléphonique
EP2515300A1 (fr) Procédé et système de réduction du bruit
WO2020049263A1 (fr) Dispositif de rehaussement de la parole par implementation d&#39;un reseau de neurones dans le domaine temporel
WO2008037925A1 (fr) Reduction de bruit et de distorsion dans une structure de type forward
WO2022207994A1 (fr) Estimation d&#39;un masque optimise pour le traitement de donnees sonores acquises
FR2921747A1 (fr) Procede de traitement d&#39;un signal audio dans un dispositif portable
FR2878399A1 (fr) Dispositif et procede de debruitage a deux voies mettant en oeuvre une fonction de coherence associee a une utilisation de proprietes psychoacoustiques, et programme d&#39;ordinateur correspondant

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20120601

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602012000117

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: G10L0021020000

Ipc: G10L0021020800

RIC1 Information provided on ipc code assigned before grant

Ipc: G10L 21/0208 20130101AFI20130314BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20130422

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 621363

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130715

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602012000117

Country of ref document: DE

Effective date: 20130905

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2430121

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20131119

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 621363

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130710

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131111

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130918

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131110

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131010

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131011

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20140411

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602012000117

Country of ref document: DE

Effective date: 20140411

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140601

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140601

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 4

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20150724

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602012000117

Country of ref document: DE

Owner name: PARROT AUTOMOTIVE, FR

Free format text: FORMER OWNER: PARROT, PARIS, FR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140602

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20151029 AND 20151104

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Owner name: PARROT AUTOMOTIVE, FR

Effective date: 20151201

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: NL

Ref legal event code: PD

Owner name: PARROT AUTOMOTIVE; FR

Free format text: DETAILS ASSIGNMENT: VERANDERING VAN EIGENAAR(S), OVERDRACHT; FORMER OWNER NAME: PARROT

Effective date: 20151102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150630

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20120601

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140630

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20190619

Year of fee payment: 8

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20200701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200701

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230523

Year of fee payment: 12

Ref country code: FR

Payment date: 20230523

Year of fee payment: 12

Ref country code: DE

Payment date: 20230523

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230523

Year of fee payment: 12