ES2158276T3 - Anulador de eco acustico con filtro adaptativo y paso al campo frecuencial. - Google Patents

Anulador de eco acustico con filtro adaptativo y paso al campo frecuencial.

Info

Publication number
ES2158276T3
ES2158276T3 ES96901828T ES96901828T ES2158276T3 ES 2158276 T3 ES2158276 T3 ES 2158276T3 ES 96901828 T ES96901828 T ES 96901828T ES 96901828 T ES96901828 T ES 96901828T ES 2158276 T3 ES2158276 T3 ES 2158276T3
Authority
ES
Spain
Prior art keywords
pct
coefficients
adaptive filter
cancellator
sec
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.)
Expired - Lifetime
Application number
ES96901828T
Other languages
English (en)
Inventor
Jerome Boudy
Francois Capman
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.)
EADS Defence and Security Networks SAS
Original Assignee
EADS Defence and Security Networks SAS
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 EADS Defence and Security Networks SAS filed Critical EADS Defence and Security Networks SAS
Application granted granted Critical
Publication of ES2158276T3 publication Critical patent/ES2158276T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Networks Using Active Elements (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Filters And Equalizers (AREA)
  • Telephone Function (AREA)

Abstract

EL ANULADOR DE ECO COMPRENDE UN FILTRO ADAPTATIVO QUE RECIBE LOS COEFICIENTES DE UNA TRANSFORMADA DIRECTA DISCRETA EN EL CAMPO FRECUENCIAL CALCULADOS SOBRE BLOQUES SUCESIVOS DE UNA SEÑAL DE ENTRADA, Y QUE ATACA, MEDIANTE UN CIRCUITO DE TRANSFORMADA INVERSA, LA ENTRADA SUSTRAIDA DE UN SUMADOR DE FORMACION DE UNA SEÑAL DE SALIDA QUE VA HACIA LA RED, Y UN CIRCUITO DE ADAPTACION DE LOS COEFICIENTES DEL FILTRO, CARACTERIZADO PORQUE DICHO CIRCUITO DE ADAPTACION RECIBE LOS COEFICIENTES DE TRANSFORMADAS SUCESIVAS DE LOS BLOQUES DE MUESTRAS DE LA SEÑAL DE SALIDA MEDIANTE UN REDUCTOR DE RUIDO. EL CIRCUITO DE ADAPTACION RECIBE LOS COEFICIENTES DE LAS TRANSFORMADAS SUCESIVAS DE LOS BLOQUES DE MUESTRAS DE LA SEÑAL DE SALIDA MEDIANTE UN REDUCTOR DE RUIDO.
ES96901828T 1995-01-24 1996-01-22 Anulador de eco acustico con filtro adaptativo y paso al campo frecuencial. Expired - Lifetime ES2158276T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9500777A FR2729804B1 (fr) 1995-01-24 1995-01-24 Annuleur d'echo acoustique a filtre adaptatif et passage dans le domaine frequentiel

Publications (1)

Publication Number Publication Date
ES2158276T3 true ES2158276T3 (es) 2001-09-01

Family

ID=9475429

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96901828T Expired - Lifetime ES2158276T3 (es) 1995-01-24 1996-01-22 Anulador de eco acustico con filtro adaptativo y paso al campo frecuencial.

Country Status (12)

Country Link
US (1) US5848151A (es)
EP (1) EP0752181B1 (es)
CN (1) CN1145710A (es)
AT (1) ATE201120T1 (es)
AU (1) AU708388B2 (es)
BR (1) BR9603890A (es)
CA (1) CA2186281A1 (es)
DE (1) DE69612701T2 (es)
ES (1) ES2158276T3 (es)
FI (1) FI963769A0 (es)
FR (1) FR2729804B1 (es)
WO (1) WO1996023384A1 (es)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997045995A1 (en) * 1996-05-31 1997-12-04 Philips Electronics N.V. Arrangement for suppressing an interfering component of an input signal
FR2758677B1 (fr) * 1997-01-21 1999-04-02 Matra Communication Procede d'annulation d'echo et annuleur d'echo mettant en oeuvre un tel procede
SG77611A1 (en) * 1997-11-13 2001-01-16 Univ Singapore Acoustic echo cancellation equipped with howling suppressor and double-talk detector
US6091813A (en) * 1998-06-23 2000-07-18 Noise Cancellation Technologies, Inc. Acoustic echo canceller
JP2000032069A (ja) * 1998-07-08 2000-01-28 Nec Corp パケット構成方法及びパケット受信器
DE19850272A1 (de) * 1998-10-31 2000-05-04 Alcatel Sa Verfahren zur Verbesserung der Echounterdrückung in einem Telekommunikaionssystem
US6269161B1 (en) * 1999-05-20 2001-07-31 Signalworks, Inc. System and method for near-end talker detection by spectrum analysis
GB2352948B (en) * 1999-07-13 2004-03-31 Racal Recorders Ltd Voice activity monitoring apparatus and methods
US6665645B1 (en) * 1999-07-28 2003-12-16 Matsushita Electric Industrial Co., Ltd. Speech recognition apparatus for AV equipment
US6834109B1 (en) 1999-11-11 2004-12-21 Tokyo Electron Limited Method and apparatus for mitigation of disturbers in communication systems
US6978015B1 (en) 1999-11-11 2005-12-20 Tokyo Electron Limited Method and apparatus for cooperative diagnosis of impairments and mitigation of disturbers in communication systems
AU1593501A (en) * 1999-11-11 2001-06-06 Voyan Technology Design and architecture of an impairment diagnosis system for use in communications systems
US6970560B1 (en) 1999-11-11 2005-11-29 Tokyo Electron Limited Method and apparatus for impairment diagnosis in communication systems
US6970415B1 (en) 1999-11-11 2005-11-29 Tokyo Electron Limited Method and apparatus for characterization of disturbers in communication systems
US7864692B1 (en) 1999-11-11 2011-01-04 Tokyo Electron Limited Method and apparatus for the prediction and optimization in impaired communication systems
US6870901B1 (en) 1999-11-11 2005-03-22 Tokyo Electron Limited Design and architecture of an impairment diagnosis system for use in communications systems
US6959167B1 (en) * 2000-08-11 2005-10-25 Scansoft, Inc. Noise-level adaptive residual echo suppressor
US20080162119A1 (en) * 2007-01-03 2008-07-03 Lenhardt Martin L Discourse Non-Speech Sound Identification and Elimination
CN101617363B (zh) * 2007-02-21 2012-09-05 艾利森电话股份有限公司 双端话音检测器
WO2009029076A1 (en) * 2007-08-31 2009-03-05 Tellabs Operations, Inc. Controlling echo in the coded domain
US8451921B2 (en) * 2009-10-28 2013-05-28 Qualcomm Incorporated Method and an apparatus for adaptively learning a sparse impulse response of a continuous channel
WO2012046582A1 (ja) * 2010-10-08 2012-04-12 日本電気株式会社 信号処理装置、信号処理方法、及び信号処理プログラム
CN110351623A (zh) * 2013-05-02 2019-10-18 布佳通有限公司 耳机有源噪声控制
JP6151213B2 (ja) * 2014-04-25 2017-06-21 日本電信電話株式会社 反響消去装置、反響消去方法、プログラム
US10102613B2 (en) * 2014-09-25 2018-10-16 Google Llc Frequency-domain denoising

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897878A (en) * 1985-08-26 1990-01-30 Itt Corporation Noise compensation in speech recognition apparatus
NL8701633A (nl) * 1987-07-10 1989-02-01 Philips Nv Digitale echocompensator.
US5148489A (en) * 1990-02-28 1992-09-15 Sri International Method for spectral estimation to improve noise robustness for speech recognition
US5274739A (en) * 1990-05-22 1993-12-28 Rockwell International Corporation Product code memory Itakura-Saito (MIS) measure for sound recognition
JP2626223B2 (ja) * 1990-09-26 1997-07-02 日本電気株式会社 音声符号化装置
DE69123579T2 (de) * 1991-09-06 1997-06-12 Ibm Verfahren zur adaptiven Echokompensation und Einrichtung zur Durchführung des Verfahrens
FR2681715B1 (fr) * 1991-09-25 1994-02-11 Matra Communication Procede de traitement de la parole en presence de bruits acoustiques: procede de soustraction spectrale non lineaire .
JPH06216811A (ja) * 1993-01-20 1994-08-05 Toshiba Corp エコーキャンセラを備えた音声通信装置
US5475731A (en) * 1994-01-07 1995-12-12 Ericsson Inc. Echo-canceling system and method using echo estimate to modify error signal
FR2715784B1 (fr) * 1994-02-02 1996-03-29 Jacques Prado Procédé et dispositif d'analyse d'un signal de retour et annuleur d'écho adaptatif en comportant application.
FR2726392B1 (fr) * 1994-10-28 1997-01-10 Alcatel Mobile Comm France Procede et dispositif de suppression de bruit dans un signal de parole, et systeme avec annulation d'echo correspondant
US5526426A (en) * 1994-11-08 1996-06-11 Signalworks System and method for an efficiently constrained frequency-domain adaptive filter
US5657384A (en) * 1995-03-10 1997-08-12 Tandy Corporation Full duplex speakerphone
JP3359460B2 (ja) * 1995-03-20 2002-12-24 沖電気工業株式会社 適応フィルタ及びエコーキャンセラ

Also Published As

Publication number Publication date
DE69612701D1 (de) 2001-06-13
EP0752181B1 (fr) 2001-05-09
AU708388B2 (en) 1999-08-05
CN1145710A (zh) 1997-03-19
EP0752181A1 (fr) 1997-01-08
FI963769A (fi) 1996-09-23
BR9603890A (pt) 1997-10-07
CA2186281A1 (fr) 1996-08-01
FR2729804B1 (fr) 1997-04-04
FI963769A0 (fi) 1996-09-23
ATE201120T1 (de) 2001-05-15
FR2729804A1 (fr) 1996-07-26
DE69612701T2 (de) 2002-04-18
WO1996023384A1 (fr) 1996-08-01
US5848151A (en) 1998-12-08
AU4625396A (en) 1996-08-14

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