DE602005005000D1 - Echokompensator unter Verwendung von adaptiven FIR- und IIR-Filtern - Google Patents

Echokompensator unter Verwendung von adaptiven FIR- und IIR-Filtern

Info

Publication number
DE602005005000D1
DE602005005000D1 DE602005005000T DE602005005000T DE602005005000D1 DE 602005005000 D1 DE602005005000 D1 DE 602005005000D1 DE 602005005000 T DE602005005000 T DE 602005005000T DE 602005005000 T DE602005005000 T DE 602005005000T DE 602005005000 D1 DE602005005000 D1 DE 602005005000D1
Authority
DE
Germany
Prior art keywords
adaptive
signal
filters
return
adaptive fir
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
DE602005005000T
Other languages
English (en)
Inventor
Chiang Yeh
Harpal Mann
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.)
Alcatel Lucent SAS
Original Assignee
Alcatel Lucent 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 Alcatel Lucent SAS filed Critical Alcatel Lucent SAS
Publication of DE602005005000D1 publication Critical patent/DE602005005000D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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)
  • Circuit For Audible Band Transducer (AREA)
DE602005005000T 2004-12-30 2005-12-23 Echokompensator unter Verwendung von adaptiven FIR- und IIR-Filtern Active DE602005005000D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/028,357 US7596220B2 (en) 2004-12-30 2004-12-30 Echo cancellation using adaptive IIR and FIR filters

Publications (1)

Publication Number Publication Date
DE602005005000D1 true DE602005005000D1 (de) 2008-04-10

Family

ID=36121289

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602005005000T Active DE602005005000D1 (de) 2004-12-30 2005-12-23 Echokompensator unter Verwendung von adaptiven FIR- und IIR-Filtern

Country Status (5)

Country Link
US (1) US7596220B2 (de)
EP (1) EP1677430B1 (de)
CN (1) CN1797546B (de)
AT (1) ATE387756T1 (de)
DE (1) DE602005005000D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100573669C (zh) * 2006-10-13 2009-12-23 南京大学 回声抵消系统中的多延迟自适应建模的方法
JP2010521939A (ja) * 2007-03-19 2010-06-24 エーシーエヌ アドヴァンスド コミュニケーションズ ネットワークス エスエー 複数のフィルタバンクを用いる多重搬送波受信機のロバストな同期方法及びそれに対応する受信機とトランシーバ
KR101585849B1 (ko) * 2011-02-16 2016-01-22 돌비 레버러토리즈 라이쎈싱 코오포레이션 필터 계수들을 생성하고 필터들을 구성하는 방법들 및 시스템들
US8644522B2 (en) * 2011-03-31 2014-02-04 Broadcom Corporation Method and system for modeling external volume changes within an acoustic echo canceller

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5305309A (en) * 1989-12-06 1994-04-19 Fujitsu Limited Echo canceller
JPH04369932A (ja) * 1991-06-19 1992-12-22 Hitachi Ltd エコーキャンセラ、および、それを用いた伝送装置
US5920548A (en) * 1996-10-01 1999-07-06 Telefonaktiebolaget L M Ericsson Echo path delay estimation
US6064873A (en) * 1997-03-26 2000-05-16 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for controlling echo on both sides of a connection
FI104524B (fi) * 1997-04-18 2000-02-15 Nokia Mobile Phones Ltd Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin
US6256383B1 (en) * 1997-11-07 2001-07-03 Legerity, Inc. IIR filter of adaptive balance circuit for long tail echo cancellation
US6263078B1 (en) * 1999-01-07 2001-07-17 Signalworks, Inc. Acoustic echo canceller with fast volume control compensation
DE19955596A1 (de) * 1999-11-18 2001-06-13 Infineon Technologies Ag Vorrichtung und Verfahren zur Echokompensation bei Gleichlage-Übertragungsverfahren im Duplex-Betrieb über eine Zweidrahtleitung
US7020279B2 (en) * 2001-10-19 2006-03-28 Quartics, Inc. Method and system for filtering a signal and for providing echo cancellation

Also Published As

Publication number Publication date
ATE387756T1 (de) 2008-03-15
EP1677430B1 (de) 2008-02-27
US7596220B2 (en) 2009-09-29
US20060147031A1 (en) 2006-07-06
CN1797546B (zh) 2010-05-26
EP1677430A1 (de) 2006-07-05
CN1797546A (zh) 2006-07-05

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Legal Events

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