DE69835644D1 - Akustischer Echokompensator - Google Patents

Akustischer Echokompensator

Info

Publication number
DE69835644D1
DE69835644D1 DE69835644T DE69835644T DE69835644D1 DE 69835644 D1 DE69835644 D1 DE 69835644D1 DE 69835644 T DE69835644 T DE 69835644T DE 69835644 T DE69835644 T DE 69835644T DE 69835644 D1 DE69835644 D1 DE 69835644D1
Authority
DE
Germany
Prior art keywords
acoustic echo
echo canceler
canceler
acoustic
echo
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 - Fee Related
Application number
DE69835644T
Other languages
English (en)
Other versions
DE69835644T2 (de
Inventor
Hui Siew Kok
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.)
Bitwave Pte Ltd
Original Assignee
Bitwave Pte 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 Bitwave Pte Ltd filed Critical Bitwave Pte Ltd
Application granted granted Critical
Publication of DE69835644D1 publication Critical patent/DE69835644D1/de
Publication of DE69835644T2 publication Critical patent/DE69835644T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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)
DE69835644T 1997-08-01 1998-07-30 Akustischer Echokompensator Expired - Fee Related DE69835644T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG9702744 1997-08-01
SG1997002744A SG71035A1 (en) 1997-08-01 1997-08-01 Acoustic echo canceller

Publications (2)

Publication Number Publication Date
DE69835644D1 true DE69835644D1 (de) 2006-10-05
DE69835644T2 DE69835644T2 (de) 2007-08-23

Family

ID=20429709

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69835644T Expired - Fee Related DE69835644T2 (de) 1997-08-01 1998-07-30 Akustischer Echokompensator

Country Status (4)

Country Link
US (1) US6249581B1 (de)
EP (1) EP0895397B9 (de)
DE (1) DE69835644T2 (de)
SG (1) SG71035A1 (de)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19850272A1 (de) * 1998-10-31 2000-05-04 Alcatel Sa Verfahren zur Verbesserung der Echounterdrückung in einem Telekommunikaionssystem
FR2802367B1 (fr) * 1999-12-14 2006-08-18 France Telecom Procede temps reel de traitement et de gestion pour l'annulation d'echo entre haut-parleur et microphone d'un terminal informatique
EP1243082A1 (de) 1999-12-17 2002-09-25 Nokia Corporation Zeitverzögerungsmesssystem in einem paketnetz
US6622030B1 (en) * 2000-06-29 2003-09-16 Ericsson Inc. Echo suppression using adaptive gain based on residual echo energy
US6766019B1 (en) * 2000-07-21 2004-07-20 Agere Systems Inc. Method and apparatus for performing double-talk detection in acoustic echo cancellation
DE10043064B4 (de) * 2000-09-01 2004-07-08 Dietmar Dr. Ruwisch Verfahren und Vorrichtung zur Elimination von Lautsprecherinterferenzen aus Mikrofonsignalen
US7547307B2 (en) * 2001-02-27 2009-06-16 Smith & Nephew, Inc. Computer assisted knee arthroplasty instrumentation, systems, and processes
ATE431111T1 (de) * 2001-02-27 2009-05-15 Smith & Nephew Inc Vorrichtung zur totalen knierekonstruktion
US6889066B2 (en) * 2001-03-27 2005-05-03 Qualcomm Incorporated Network echo suppression in mobile stations
WO2003010996A2 (en) * 2001-07-20 2003-02-06 Koninklijke Philips Electronics N.V. Sound reinforcement system having an echo suppressor and loudspeaker beamformer
JP2004537232A (ja) * 2001-07-20 2004-12-09 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 多数のマイクロフォンのエコーを抑圧する回路をポストプロセッサとして有する音響補強システム
US7409057B1 (en) * 2002-07-03 2008-08-05 Marvell International Ltd. Nonlinear echo compensator for class B transmitter line driver
US7272224B1 (en) * 2003-03-03 2007-09-18 Apple Inc. Echo cancellation
US7363334B2 (en) * 2003-08-28 2008-04-22 Accoutic Processing Technology, Inc. Digital signal-processing structure and methodology featuring engine-instantiated, wave-digital-filter componentry, and fabrication thereof
US20050065778A1 (en) * 2003-09-24 2005-03-24 Mastrianni Steven J. Secure speech
US7862570B2 (en) 2003-10-03 2011-01-04 Smith & Nephew, Inc. Surgical positioners
US7764985B2 (en) 2003-10-20 2010-07-27 Smith & Nephew, Inc. Surgical navigation system component fault interfaces and related processes
CA2546023C (en) 2003-11-14 2012-11-06 Smith & Nephew, Inc. Adjustable surgical cutting systems
AU2005237479B8 (en) 2004-04-21 2011-09-29 Smith & Nephew, Inc. Computer-aided methods for shoulder arthroplasty
US7395790B2 (en) * 2004-11-18 2008-07-08 S&S Cycle, Inc. Reed valve breather for evolution engine
EP1855601B1 (de) 2005-02-22 2018-10-10 Smith & Nephew, Inc. Lineares frässystem
WO2006111370A1 (en) * 2005-04-19 2006-10-26 Epfl (Ecole Polytechnique Federale De Lausanne) A method and device for removing echo in a multi-channel audio signal
US7647077B2 (en) 2005-05-31 2010-01-12 Bitwave Pte Ltd Method for echo control of a wireless headset
US7856098B1 (en) * 2005-09-15 2010-12-21 Mindspeed Technologies, Inc. Echo cancellation and control in discrete cosine transform domain
DE102008039329A1 (de) 2008-01-25 2009-07-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Berechnung von Steuerinformationen für ein Echounterdrückungsfilter und Vorrichtung und Verfahren zur Berechnung eines Verzögerungswerts
NO332437B1 (no) * 2010-01-18 2012-09-17 Cisco Systems Int Sarl Apparat og fremgangsmate for a supprimere et akustisk ekko
EP2710787A1 (de) * 2011-05-17 2014-03-26 Google, Inc. Nichtlineare nachverarbeitung für akustische echounterdrückung
US9065895B2 (en) * 2012-02-22 2015-06-23 Broadcom Corporation Non-linear echo cancellation
US9628141B2 (en) * 2012-10-23 2017-04-18 Interactive Intelligence Group, Inc. System and method for acoustic echo cancellation
US9083782B2 (en) * 2013-05-08 2015-07-14 Blackberry Limited Dual beamform audio echo reduction
CN103414453B (zh) * 2013-08-19 2016-02-24 北京无线电计量测试研究所 一种频率源短稳参数数字化检测方法及装置
CN109448748B (zh) * 2018-12-17 2021-08-03 嘉楠明芯(北京)科技有限公司 一种用于回声消除的滤波方法及装置、设备、介质
CN111917926B (zh) * 2019-05-09 2021-08-06 上海触乐信息科技有限公司 一种通信终端中的回声消除方法、装置及终端设备

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699271A (en) * 1970-11-16 1972-10-17 Bell Telephone Labor Inc Speech processor using multiband controlled center clipping
US3784747A (en) * 1971-12-03 1974-01-08 Bell Telephone Labor Inc Speech suppression by predictive filtering
DE3118473C2 (de) * 1981-05-09 1987-02-05 Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Verfahren zur Aufbereitung elektrischer Signale mit einer digitalen Filteranordnung
US4644108A (en) * 1982-10-27 1987-02-17 International Business Machines Corporation Adaptive sub-band echo suppressor
US4562312A (en) * 1983-02-17 1985-12-31 At&T Bell Laboratories Subsampling delay estimator for an echo canceler
EP0288577B1 (de) * 1986-10-30 1992-06-03 Fujitsu Limited Echokompensator mit kurzer verarbeitungsverzögerung und reduzierter multiplikationszahl und verfahren zur echokompensation
NL8701633A (nl) * 1987-07-10 1989-02-01 Philips Nv Digitale echocompensator.
US5588089A (en) * 1990-10-23 1996-12-24 Koninklijke Ptt Nederland N.V. Bark amplitude component coder for a sampled analog signal and decoder for the coded signal
US5450522A (en) * 1991-08-19 1995-09-12 U S West Advanced Technologies, Inc. Auditory model for parametrization of speech
DE4316297C1 (de) * 1993-05-14 1994-04-07 Fraunhofer Ges Forschung Frequenzanalyseverfahren
EP0704118B1 (de) * 1994-04-12 2003-06-04 Koninklijke Philips Electronics N.V. Signalverstärkersystem mit verbesserter echounterdrückung
US5659619A (en) * 1994-05-11 1997-08-19 Aureal Semiconductor, Inc. Three-dimensional virtual audio display employing reduced complexity imaging filters

Also Published As

Publication number Publication date
DE69835644T2 (de) 2007-08-23
EP0895397A2 (de) 1999-02-03
US6249581B1 (en) 2001-06-19
EP0895397A3 (de) 1999-08-18
SG71035A1 (en) 2000-03-21
EP0895397B9 (de) 2007-01-17
EP0895397B1 (de) 2006-08-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: JOSTARNDT PATENTANWALTS-AG, 52074 AACHEN

8339 Ceased/non-payment of the annual fee