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 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0719028B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JP3568665B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR (1) KR100300248B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA2162413C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE69531336T2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SG (1) SG52194A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
TW (1) TW281849B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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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
US6240180B1 (en) * 1997-11-14 2001-05-29 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having split adaptive gain settings
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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
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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
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US6785382B2 (en) 2001-02-12 2004-08-31 Signalworks, Inc. System and method for controlling a filter to enhance speakerphone performance
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US7319770B2 (en) 2004-04-30 2008-01-15 Phonak Ag Method of processing an acoustic signal, and a hearing instrument
CN101137340B (zh) * 2005-01-19 2010-11-10 耐可真脊柱有限公司 弹性体在刚性结构上的固定
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Also Published As

Publication number Publication date
DE69531336T2 (de) 2004-04-15
US5548642A (en) 1996-08-20
DE69531336D1 (de) 2003-08-28
EP0719028A3 (en) 1999-04-28
JPH08251084A (ja) 1996-09-27
KR960028517A (ko) 1996-07-22
JP3568665B2 (ja) 2004-09-22
KR100300248B1 (ko) 2001-10-22
EP0719028A2 (en) 1996-06-26
CA2162413A1 (en) 1996-06-24
EP0719028B1 (en) 2003-07-23
CA2162413C (en) 2001-08-07
TW281849B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1996-07-21

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