ATE343874T1 - Echounterdrückung unter verwendung von vordergrund- und hintergrundfiltern - Google Patents

Echounterdrückung unter verwendung von vordergrund- und hintergrundfiltern

Info

Publication number
ATE343874T1
ATE343874T1 AT98302979T AT98302979T ATE343874T1 AT E343874 T1 ATE343874 T1 AT E343874T1 AT 98302979 T AT98302979 T AT 98302979T AT 98302979 T AT98302979 T AT 98302979T AT E343874 T1 ATE343874 T1 AT E343874T1
Authority
AT
Austria
Prior art keywords
filter
background
filters
echo
main
Prior art date
Application number
AT98302979T
Other languages
English (en)
Inventor
Jorma Makinen
Antti Vahatalo
Original Assignee
Nokia Corp
Nokia Telecomm 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 Nokia Corp, Nokia Telecomm Ltd filed Critical Nokia Corp
Application granted granted Critical
Publication of ATE343874T1 publication Critical patent/ATE343874T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)
AT98302979T 1997-04-18 1998-04-17 Echounterdrückung unter verwendung von vordergrund- und hintergrundfiltern ATE343874T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI971664A FI104524B (fi) 1997-04-18 1997-04-18 Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin

Publications (1)

Publication Number Publication Date
ATE343874T1 true ATE343874T1 (de) 2006-11-15

Family

ID=8548674

Family Applications (1)

Application Number Title Priority Date Filing Date
AT98302979T ATE343874T1 (de) 1997-04-18 1998-04-17 Echounterdrückung unter verwendung von vordergrund- und hintergrundfiltern

Country Status (6)

Country Link
US (1) US6163609A (de)
EP (1) EP0872962B1 (de)
JP (1) JP3679245B2 (de)
AT (1) ATE343874T1 (de)
DE (1) DE69836240T2 (de)
FI (1) FI104524B (de)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935808A1 (de) * 1999-07-29 2001-02-08 Ericsson Telefon Ab L M Echounterdrückungseinrichtung zum Unterdrücken von Echos in einer Sender/Empfänger-Einheit
US7068780B1 (en) * 2000-08-30 2006-06-27 Conexant, Inc. Hybrid echo canceller
US6970896B2 (en) 2001-08-08 2005-11-29 Octasic Inc. Method and apparatus for generating a set of filter coefficients
US6965640B2 (en) 2001-08-08 2005-11-15 Octasic Inc. Method and apparatus for generating a set of filter coefficients providing adaptive noise reduction
US6999509B2 (en) 2001-08-08 2006-02-14 Octasic Inc. Method and apparatus for generating a set of filter coefficients for a time updated adaptive filter
US6957240B2 (en) * 2001-08-08 2005-10-18 Octasic Inc. Method and apparatus for providing an error characterization estimate of an impulse response derived using least squares
GB2389286A (en) * 2002-05-28 2003-12-03 Mitel Knowledge Corp Echo cancellation
US6961423B2 (en) * 2002-06-24 2005-11-01 Freescale Semiconductor, Inc. Method and apparatus for performing adaptive filtering
US7242762B2 (en) 2002-06-24 2007-07-10 Freescale Semiconductor, Inc. Monitoring and control of an adaptive filter in a communication system
US7388954B2 (en) 2002-06-24 2008-06-17 Freescale Semiconductor, Inc. Method and apparatus for tone indication
US7215765B2 (en) 2002-06-24 2007-05-08 Freescale Semiconductor, Inc. Method and apparatus for pure delay estimation in a communication system
GB2395878A (en) * 2002-11-29 2004-06-02 Mitel Knowledge Corp Method of capturing constant echo path information using default coefficients
US6947549B2 (en) * 2003-02-19 2005-09-20 The Hong Kong Polytechnic University Echo canceller
DE10329055B4 (de) * 2003-06-27 2005-10-13 Infineon Technologies Ag Verfahren und Vorrichtung zur Echokompensation
US20070116255A1 (en) * 2003-12-10 2007-05-24 Koninklijke Philips Electronic, N.V. Echo canceller having a series arrangement of adaptive filters with individual update control strategy
US7536007B2 (en) * 2004-12-30 2009-05-19 Alcatel Lucent Echo cancellation using adaptive IIR and FIR filters
US7596220B2 (en) * 2004-12-30 2009-09-29 Alcatel Lucent Echo cancellation using adaptive IIR and FIR filters
GB2427332B (en) * 2005-06-16 2007-05-16 Trinity Convergence Inc Systems and methods for adaptive echo cancellation
US8335311B2 (en) * 2005-07-28 2012-12-18 Kabushiki Kaisha Toshiba Communication apparatus capable of echo cancellation
US8014516B2 (en) * 2006-01-27 2011-09-06 Mediatek Inc. Method and apparatus for echo cancellation
US8437757B2 (en) * 2006-06-30 2013-05-07 Nokia Corporation Systems for providing peer-to-peer communications
US8170224B2 (en) * 2008-09-22 2012-05-01 Magor Communications Corporation Wideband speakerphone
JP5373473B2 (ja) * 2009-05-11 2013-12-18 株式会社エー・アール・アイ 音声抽出装置
SE533956C2 (sv) * 2009-07-20 2011-03-15 Limes Audio Ab Enhet och metod för styrning av restekodämpning
EP2512040B1 (de) * 2011-04-14 2013-11-13 Alcatel Lucent Rechensparender Echokompensator für ein Breitband-Audiosignal
US9479650B1 (en) 2015-05-04 2016-10-25 Captioncall, Llc Methods and devices for updating filter coefficients during echo cancellation
KR102266780B1 (ko) * 2019-07-04 2021-06-18 한양대학교 산학협력단 음성 통신 환경에서 발생하는 클리핑 현상 완화 및 마이크 입력 신호, 에러 신호 및 원단 신호의 상관관계를 이용한 음성 왜곡 감소 업데이트 방법 및 장치
US20230051021A1 (en) * 2021-08-04 2023-02-16 Nokia Technologies Oy Apparatus, Methods and Computer Programs for Performing Acoustic Echo Cancellation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8423017D0 (en) * 1984-09-12 1984-10-17 Plessey Co Plc Echo canceller
AU4695485A (en) * 1984-09-21 1986-03-27 Alcatel N.V. Digital hybrid
US5307405A (en) * 1992-09-25 1994-04-26 Qualcomm Incorporated Network echo canceller
JP2538176B2 (ja) * 1993-05-28 1996-09-25 松下電器産業株式会社 エコ―制御装置
FI108830B (fi) * 1993-12-23 2002-03-28 Nokia Corp Menetelmä ja laite kaiun vaimentamiseksi puhelinlaitteessa
US5664011A (en) * 1995-08-25 1997-09-02 Lucent Technologies Inc. Echo canceller with adaptive and non-adaptive filters
SE505150C3 (sv) * 1995-10-18 1997-08-04 Ericsson Telefon Ab L M Adaptivt ekoslaeckningsfoerfarande av dubbelfiltertyp

Also Published As

Publication number Publication date
EP0872962A3 (de) 2004-12-08
FI971664A0 (fi) 1997-04-18
JP3679245B2 (ja) 2005-08-03
JPH10341190A (ja) 1998-12-22
FI104524B (fi) 2000-02-15
US6163609A (en) 2000-12-19
FI971664A (fi) 1998-10-19
EP0872962A2 (de) 1998-10-21
DE69836240D1 (de) 2006-12-07
DE69836240T2 (de) 2007-02-08
EP0872962B1 (de) 2006-10-25

Similar Documents

Publication Publication Date Title
ATE343874T1 (de) Echounterdrückung unter verwendung von vordergrund- und hintergrundfiltern
AU767771B2 (en) Digital adaptive filter and acoustic echo canceller using the same
JP3447735B2 (ja) ネットワークエコー消去装置
AU723043B2 (en) Echo suppressor and non-linear processor of echo canceller
FI863169A0 (fi) Fullstaendigt dubbelriktad hoegtalartelefon foer radio- och kabeltelefonsystem.
CA2101228A1 (en) Active acoustic attenuation system with power limiting
WO1997023068A3 (en) An adaptive noise cancelling arrangement, a noise reduction system and a transceiver
WO2004045244A8 (en) Adaptative noise canceling microphone system
CA2132428A1 (en) Speech communication apparatus
IL150823A0 (en) Improved system and method for implementation of an echo canceller
ATE349849T1 (de) Erzeugung von kalibrierungssignalen zur adaptiven strahlbildung
CA2174366A1 (en) Subband echo cancellation method using projection algorithm
ES2158276T3 (es) Anulador de eco acustico con filtro adaptativo y paso al campo frecuencial.
ITMI920398A1 (it) Procedimento e dispositivo per la cancellazione numerica adattativa dell'eco generato in collegamenti telefonici non stazionari
EP0758830A3 (de) Akustischer Teilband-Echokompensator
EP1210814B1 (de) Verfahren und vorrichtung zur leistungsverbesserung eines adaptiven filters mittels nicht hörbarer information
US5970154A (en) Apparatus and method for echo cancellation
EP0732838A3 (de) Akustischer Echokompensator
JP4754497B2 (ja) 音声歪み抑制システム
SE9200062D0 (sv) Anordning foer att minska risken foer en icke oenskad parameterdrift hos ett adaptivt filter som anvaends foer ekoeliminering
SE9503545D0 (sv) Förafrande vid telefonsystem
ATE146320T1 (de) Anordnung zur unterdrückung von akustischen reflexionen bei handapparaten der fernsprechtechnik
DE59812278D1 (de) Verfahren und vorrichtung zur echounterdrückung bei einer freisprecheinrichtung, insbesondere für ein telefon
JPH04174500A (ja) 雑音除去装置
JPH02301351A (ja) ノイズ除去機能付き電話機

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties