SE9301184L - Sätt att utföra konvergens i en ekoundertryckare med adaptiva filter - Google Patents

Sätt att utföra konvergens i en ekoundertryckare med adaptiva filter

Info

Publication number
SE9301184L
SE9301184L SE9301184A SE9301184A SE9301184L SE 9301184 L SE9301184 L SE 9301184L SE 9301184 A SE9301184 A SE 9301184A SE 9301184 A SE9301184 A SE 9301184A SE 9301184 L SE9301184 L SE 9301184L
Authority
SE
Sweden
Prior art keywords
filter vector
ways
adaptive filters
echo suppressor
perform convergence
Prior art date
Application number
SE9301184A
Other languages
Unknown language ( )
English (en)
Swedish (sv)
Other versions
SE9301184D0 (sv
Inventor
Jamesp Ashley
Quoc Nguyen
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of SE9301184D0 publication Critical patent/SE9301184D0/xx
Publication of SE9301184L publication Critical patent/SE9301184L/

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/015—Reducing echo effects

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
SE9301184A 1992-04-13 1993-04-08 Sätt att utföra konvergens i en ekoundertryckare med adaptiva filter SE9301184L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/867,555 US5295136A (en) 1992-04-13 1992-04-13 Method of performing convergence in a, least mean square, adaptive filter, echo canceller

Publications (2)

Publication Number Publication Date
SE9301184D0 SE9301184D0 (sv) 1993-04-08
SE9301184L true SE9301184L (sv) 1993-10-14

Family

ID=25350012

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9301184A SE9301184L (sv) 1992-04-13 1993-04-08 Sätt att utföra konvergens i en ekoundertryckare med adaptiva filter

Country Status (5)

Country Link
US (1) US5295136A (fr)
JP (1) JP2858065B2 (fr)
CA (1) CA2093744C (fr)
FR (1) FR2692089B1 (fr)
SE (1) SE9301184L (fr)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5617423A (en) 1993-01-08 1997-04-01 Multi-Tech Systems, Inc. Voice over data modem with selectable voice compression
US6009082A (en) 1993-01-08 1999-12-28 Multi-Tech Systems, Inc. Computer-based multifunction personal communication system with caller ID
US5812534A (en) 1993-01-08 1998-09-22 Multi-Tech Systems, Inc. Voice over data conferencing for a computer-based personal communications system
US5535204A (en) 1993-01-08 1996-07-09 Multi-Tech Systems, Inc. Ringdown and ringback signalling for a computer-based multifunction personal communications system
US7082106B2 (en) * 1993-01-08 2006-07-25 Multi-Tech Systems, Inc. Computer-based multi-media communications system and method
US5864560A (en) 1993-01-08 1999-01-26 Multi-Tech Systems, Inc. Method and apparatus for mode switching in a voice over data computer-based personal communications system
US5453986A (en) 1993-01-08 1995-09-26 Multi-Tech Systems, Inc. Dual port interface for a computer-based multifunction personal communication system
US5452289A (en) 1993-01-08 1995-09-19 Multi-Tech Systems, Inc. Computer-based multifunction personal communications system
US5546395A (en) 1993-01-08 1996-08-13 Multi-Tech Systems, Inc. Dynamic selection of compression rate for a voice compression algorithm in a voice over data modem
US5412686A (en) * 1993-09-17 1995-05-02 Motorola Inc. Method and apparatus for power estimation in a communication system
US5757801A (en) 1994-04-19 1998-05-26 Multi-Tech Systems, Inc. Advanced priority statistical multiplexer
US5682386A (en) 1994-04-19 1997-10-28 Multi-Tech Systems, Inc. Data/voice/fax compression multiplexer
ES2101633B1 (es) * 1994-05-31 1998-03-01 Alcatel Standard Electrica Terminal celular fijo para servicios de telecomunicaciones a dos hilos.
US5535194A (en) * 1994-07-14 1996-07-09 Motorola, Inc. Method and apparatus for echo canceling with double-talk immunity
US5592548A (en) * 1995-05-31 1997-01-07 Qualcomm Incorporated System and method for avoiding false convergence in the presence of tones in a time-domain echo cancellation process
US5933494A (en) * 1995-12-07 1999-08-03 Rockwell International Corporation Echo canceling method and apparatus in a communication device
EP0951798B1 (fr) * 1996-04-03 2002-07-03 BRITISH TELECOMMUNICATIONS public limited company Correction acoustique en retour
US5856970A (en) * 1996-08-05 1999-01-05 Motorola, Inc. Multi-channel echo cancellation method and apparatus
US6044068A (en) * 1996-10-01 2000-03-28 Telefonaktiebolaget Lm Ericsson Silence-improved echo canceller
KR20000064767A (ko) * 1997-01-23 2000-11-06 비센트 비.인그라시아 통신 시스템의 비선형 처리 장치 및 방법
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
US6185195B1 (en) * 1997-05-16 2001-02-06 Qualcomm Incorporated Methods for preventing and detecting message collisions in a half-duplex communication system
US6009448A (en) * 1997-08-18 1999-12-28 Industrial Technology Research Institute Pipelined parallel-serial architecture for a modified least mean square adaptive filter
US6031908A (en) * 1997-11-14 2000-02-29 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having variable adaptive gain settings
US6240180B1 (en) * 1997-11-14 2001-05-29 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having split adaptive gain settings
JP3437445B2 (ja) 1998-05-22 2003-08-18 松下電器産業株式会社 線形信号予測を用いた受信装置及び方法
GB2354414B (en) * 1999-09-14 2004-12-22 Mitel Corp Locating network echos
US6377682B1 (en) * 2000-06-26 2002-04-23 Lucent Technologies Inc. Robust adaptive filter for use in acoustic and network echo cancellation
US7006458B1 (en) 2000-08-16 2006-02-28 3Com Corporation Echo canceller disabler for modulated data signals
US6865270B1 (en) 2000-09-21 2005-03-08 Rane Corporation Echo cancellation method and apparatus
US7639601B2 (en) * 2002-07-05 2009-12-29 Nortel Networks Limited Methods and apparatus for data communication
GB2397990A (en) * 2003-01-31 2004-08-04 Mitel Networks Corp Echo cancellation/suppression and double-talk detection in communication paths
WO2004075582A1 (fr) * 2003-02-21 2004-09-02 Nortel Networks Limited Dispositif et procede de communication permettant d'etablir une connexion par contournement codec
US6954530B2 (en) 2003-07-09 2005-10-11 Utah State University Echo cancellation filter
US6996229B2 (en) * 2003-07-09 2006-02-07 Utah State University Echo cancellation filter
US8027265B2 (en) * 2004-03-19 2011-09-27 Genband Us Llc Providing a capability list of a predefined format in a communications network
US7990865B2 (en) * 2004-03-19 2011-08-02 Genband Us Llc Communicating processing capabilities along a communications path
CN101622711B (zh) 2006-12-28 2012-07-18 杰恩邦德公司 用于无声插入描述符（sid）转换的方法、系统
JP5061976B2 (ja) * 2008-03-12 2012-10-31 沖電気工業株式会社 エコーキャンセラ、エコーキャンセル方法及びプログラム
US8908541B2 (en) 2009-08-04 2014-12-09 Genband Us Llc Methods, systems, and computer readable media for intelligent optimization of digital signal processor (DSP) resource utilization in a media gateway
CN109346098B (zh) * 2018-11-20 2022-06-07 网宿科技股份有限公司 一种回声消除方法及终端
US10891935B2 (en) * 2019-05-07 2021-01-12 Harman International Industries, Incorporated In-vehicle noise cancellation adaptive filter divergence control

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1208769B (it) * 1983-10-12 1989-07-10 Cselt Centro Studi Lab Telecom Teristiche varianti nel tempo procedimento e dispositivo per la cancellazione numerica dell eco generato in collegamenti con carat
US4805215A (en) * 1986-10-01 1989-02-14 Racal Data Communications Inc. Adaptive echo canceller with sparse dynamically positioned taps
JPS63234732A (ja) * 1987-03-24 1988-09-30 Matsushita Electric Ind Co Ltd 音響エコ−キヤンセラ
CA1315356C (fr) * 1988-07-20 1993-03-30 Seiji Miyoshi Filtre adaptatif numerique et methode de convergence utilisee par celui-ci
US5001701A (en) * 1989-08-07 1991-03-19 At&T Bell Laboratories Subband echo canceler including real time allocation among the subbands
US5029167A (en) * 1989-09-13 1991-07-02 Northern Telecom Limited Coefficient storage reduction in adaptive filters in echo cancellers or decision feedback equalizers
US4947425A (en) * 1989-10-27 1990-08-07 At&T Bell Laboratories Echo measurement arrangement

Also Published As

Publication number Publication date
CA2093744A1 (fr) 1993-10-14
CA2093744C (fr) 1997-07-01
US5295136A (en) 1994-03-15
SE9301184D0 (sv) 1993-04-08
FR2692089B1 (fr) 1996-06-21
JPH06104797A (ja) 1994-04-15
JP2858065B2 (ja) 1999-02-17
FR2692089A1 (fr) 1993-12-10

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