SG52194A1 - Optimization of adaptive filter tap settings for subband acoustic echo cancellers in teleconferencing - Google Patents

Optimization of adaptive filter tap settings for subband acoustic echo cancellers in teleconferencing

Info

Publication number
SG52194A1
SG52194A1 SG1995002306A SG1995002306A SG52194A1 SG 52194 A1 SG52194 A1 SG 52194A1 SG 1995002306 A SG1995002306 A SG 1995002306A SG 1995002306 A SG1995002306 A SG 1995002306A SG 52194 A1 SG52194 A1 SG 52194A1
Authority
SG
Singapore
Prior art keywords
teleconferencing
optimization
adaptive filter
acoustic echo
filter tap
Prior art date
Application number
SG1995002306A
Other languages
English (en)
Inventor
Eric John Diethorn
Original Assignee
At & T Corp
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 At & T Corp filed Critical At & T Corp
Publication of SG52194A1 publication Critical patent/SG52194A1/en

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/002—Applications of echo suppressors or cancellers in telephonic connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
SG1995002306A 1994-12-23 1995-12-22 Optimization of adaptive filter tap settings for subband acoustic echo cancellers in teleconferencing SG52194A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/363,675 US5548642A (en) 1994-12-23 1994-12-23 Optimization of adaptive filter tap settings for subband acoustic echo cancelers in teleconferencing

Publications (1)

Publication Number Publication Date
SG52194A1 true SG52194A1 (en) 1998-09-28

Family

ID=23431212

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1995002306A SG52194A1 (en) 1994-12-23 1995-12-22 Optimization of adaptive filter tap settings for subband acoustic echo cancellers in teleconferencing

Country Status (8)

Country Link
US (1) US5548642A (it)
EP (1) EP0719028B1 (it)
JP (1) JP3568665B2 (it)
KR (1) KR100300248B1 (it)
CA (1) CA2162413C (it)
DE (1) DE69531336T2 (it)
SG (1) SG52194A1 (it)
TW (1) TW281849B (it)

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JP3099870B2 (ja) * 1996-07-23 2000-10-16 日本電気株式会社 音響エコーキャンセラ
US6044068A (en) * 1996-10-01 2000-03-28 Telefonaktiebolaget Lm Ericsson Silence-improved echo canceller
US5838786A (en) * 1996-10-04 1998-11-17 Lucent Technologies, Inc. Intelligent acoustic systems peripheral
DE19647276A1 (de) * 1996-11-15 1998-05-20 Alsthom Cge Alcatel Verfahren und Anordnung zur adaptiven Echokompensation
US5970154A (en) * 1997-06-16 1999-10-19 Industrial Technology Research Institute Apparatus and method for echo cancellation
KR100245608B1 (ko) * 1997-10-27 2000-02-15 김완식 기록 및 사진첩
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
GB2344036B (en) * 1998-11-23 2004-01-21 Mitel Corp Single-sided subband filters
US7512149B2 (en) * 2003-04-23 2009-03-31 At & T Intellectual Property Ii, L.P. Bit and power allocation scheme for full-duplex transmission with echo cancellation in multicarrier-based modems
US6510224B1 (en) 1999-05-20 2003-01-21 Telefonaktiebolaget L M Ericsson Enhancement of near-end voice signals in an echo suppression system
NL1013044C2 (nl) * 1999-09-15 2001-03-16 Koninkl Kpn Nv Kwaliteitsmeting van spraaksignalen met echo-verstoring.
EP1168734A1 (en) * 2000-06-26 2002-01-02 BRITISH TELECOMMUNICATIONS public limited company Method to reduce the distortion in a voice transmission over data networks
KR20020036542A (ko) * 2000-11-10 2002-05-16 김승범 반향 제거 장치
US6785382B2 (en) 2001-02-12 2004-08-31 Signalworks, Inc. System and method for controlling a filter to enhance speakerphone performance
US6673113B2 (en) 2001-10-18 2004-01-06 Spinecore, Inc. Intervertebral spacer device having arch shaped spring elements
US20050125064A1 (en) * 2001-02-15 2005-06-09 Spinecore, Inc. Intervertebral spacer device
US6989032B2 (en) * 2001-07-16 2006-01-24 Spinecore, Inc. Artificial intervertebral disc
US7771477B2 (en) * 2001-10-01 2010-08-10 Spinecore, Inc. Intervertebral spacer device utilizing a belleville washer having radially spaced concentric grooves
JP3984842B2 (ja) * 2002-03-12 2007-10-03 松下電器産業株式会社 ハウリング制御装置
US7151803B1 (en) 2002-04-01 2006-12-19 At&T Corp. Multiuser allocation method for maximizing transmission capacity
US20080027548A9 (en) 2002-04-12 2008-01-31 Ferree Bret A Spacerless artificial disc replacements
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US7167568B2 (en) * 2002-05-02 2007-01-23 Microsoft Corporation Microphone array signal enhancement
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US6908484B2 (en) 2003-03-06 2005-06-21 Spinecore, Inc. Cervical disc replacement
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US7319770B2 (en) 2004-04-30 2008-01-15 Phonak Ag Method of processing an acoustic signal, and a hearing instrument
EP1841387B1 (en) * 2005-01-19 2011-12-21 Nexgen Spine, Inc. Elastomeric intervertebral disc prosthesis
AU2006206559A1 (en) * 2005-01-19 2006-07-27 Nexgen Spine, Inc. Fixation of elastomer to rigid structures
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JP4107613B2 (ja) * 2006-09-04 2008-06-25 インターナショナル・ビジネス・マシーンズ・コーポレーション 残響除去における低コストのフィルタ係数決定法
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US8155304B2 (en) * 2007-04-10 2012-04-10 Microsoft Corporation Filter bank optimization for acoustic echo cancellation
US8259928B2 (en) * 2007-04-23 2012-09-04 Microsoft Corporation Method and apparatus for reducing timestamp noise in audio echo cancellation
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US9520140B2 (en) 2013-04-10 2016-12-13 Dolby Laboratories Licensing Corporation Speech dereverberation methods, devices and systems
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JPH04123621A (ja) * 1990-09-14 1992-04-23 Nippon Telegr & Teleph Corp <Ntt> 反響消去装置
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Also Published As

Publication number Publication date
DE69531336D1 (de) 2003-08-28
EP0719028A3 (en) 1999-04-28
KR100300248B1 (ko) 2001-10-22
JPH08251084A (ja) 1996-09-27
DE69531336T2 (de) 2004-04-15
JP3568665B2 (ja) 2004-09-22
EP0719028A2 (en) 1996-06-26
KR960028517A (ko) 1996-07-22
CA2162413C (en) 2001-08-07
TW281849B (it) 1996-07-21
US5548642A (en) 1996-08-20
CA2162413A1 (en) 1996-06-24
EP0719028B1 (en) 2003-07-23

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