KR100300248B1 - 서브대역음향에코소거기 - Google Patents

서브대역음향에코소거기 Download PDF

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Publication number
KR100300248B1
KR100300248B1 KR1019950054930A KR19950054930A KR100300248B1 KR 100300248 B1 KR100300248 B1 KR 100300248B1 KR 1019950054930 A KR1019950054930 A KR 1019950054930A KR 19950054930 A KR19950054930 A KR 19950054930A KR 100300248 B1 KR100300248 B1 KR 100300248B1
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KR
South Korea
Prior art keywords
subband
tap
acoustic
echo canceller
room
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.)
Expired - Fee Related
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KR1019950054930A
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English (en)
Korean (ko)
Other versions
KR960028517A (ko
Inventor
존 디에토른 에릭
Original Assignee
엘리 웨이스 , 알 비 레비
에이티 앤드 티 코포레이션
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Application filed by 엘리 웨이스 , 알 비 레비, 에이티 앤드 티 코포레이션 filed Critical 엘리 웨이스 , 알 비 레비
Publication of KR960028517A publication Critical patent/KR960028517A/ko
Application granted granted Critical
Publication of KR100300248B1 publication Critical patent/KR100300248B1/ko
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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)
KR1019950054930A 1994-12-23 1995-12-22 서브대역음향에코소거기 Expired - Fee Related KR100300248B1 (ko)

Applications Claiming Priority (2)

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
US08/363,675 1994-12-23

Publications (2)

Publication Number Publication Date
KR960028517A KR960028517A (ko) 1996-07-22
KR100300248B1 true KR100300248B1 (ko) 2001-10-22

Family

ID=23431212

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950054930A Expired - Fee Related KR100300248B1 (ko) 1994-12-23 1995-12-22 서브대역음향에코소거기

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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KR20160095008A (ko) * 2013-12-05 2016-08-10 마이크로소프트 테크놀로지 라이센싱, 엘엘씨 음향 에코 제거를 위한 룸 임펄스 응답을 추정하는 방법

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US5825753A (en) * 1995-09-29 1998-10-20 Paradyne Corporation Echo canceler gain tracker for cellular modems
JP3199155B2 (ja) * 1995-10-18 2001-08-13 日本電信電話株式会社 反響消去装置
US5825754A (en) * 1995-12-28 1998-10-20 Vtel Corporation Filter and process for reducing noise in audio signals
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
US6240180B1 (en) * 1997-11-14 2001-05-29 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having split adaptive gain settings
US6031908A (en) * 1997-11-14 2000-02-29 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having variable 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
US6989032B2 (en) * 2001-07-16 2006-01-24 Spinecore, Inc. Artificial intervertebral disc
US20050125064A1 (en) * 2001-02-15 2005-06-09 Spinecore, Inc. Intervertebral spacer device
US6673113B2 (en) 2001-10-18 2004-01-06 Spinecore, Inc. Intervertebral spacer device having arch shaped spring elements
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
US8038713B2 (en) 2002-04-23 2011-10-18 Spinecore, Inc. Two-component artificial disc replacements
US20080027548A9 (en) 2002-04-12 2008-01-31 Ferree Bret A Spacerless artificial disc replacements
US7167568B2 (en) * 2002-05-02 2007-01-23 Microsoft Corporation Microphone array signal enhancement
AU2003259469A1 (en) * 2002-08-01 2004-02-23 Koninklijke Philips Electronics N.V. Echo canceling in a speech processing system
US6908484B2 (en) 2003-03-06 2005-06-21 Spinecore, Inc. Cervical disc replacement
US20050015150A1 (en) * 2003-07-17 2005-01-20 Lee Casey K. Intervertebral disk and nucleus prosthesis
KR20060094078A (ko) * 2003-10-16 2006-08-28 코닌클리즈케 필립스 일렉트로닉스 엔.브이. 음성 동작 검출 장치 및 방법
US7319770B2 (en) 2004-04-30 2008-01-15 Phonak Ag Method of processing an acoustic signal, and a hearing instrument
WO2006078663A2 (en) * 2005-01-19 2006-07-27 Nexgen Spine, Inc. Elastomeric intervertebral disc prosthesis
AU2006206559A1 (en) * 2005-01-19 2006-07-27 Nexgen Spine, Inc. Fixation of elastomer to rigid structures
EP1948041A2 (en) * 2005-10-24 2008-07-30 Nexgen Spine, Inc. Intervertebral disc replacement and associated instrumentation
JP4706439B2 (ja) * 2005-11-02 2011-06-22 ヤマハ株式会社 遠隔会議システム
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
WO2008039850A2 (en) * 2006-09-26 2008-04-03 Nexgen Spine, Inc. Intervertebral. prosthesis endplate having double dome and surgical tools for preparing the vertebral body endplate to receive the prosthesis
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
EP2237271B1 (en) 2009-03-31 2021-01-20 Cerence Operating Company Method for determining a signal component for reducing noise in an input signal
US8934620B2 (en) 2011-04-01 2015-01-13 Cogent Signals, Inc. Acoustic echo cancellation for high noise and excessive double talk
GB2493801B (en) 2011-08-18 2014-05-14 Ibm Improved audio quality in teleconferencing
WO2014168777A1 (en) 2013-04-10 2014-10-16 Dolby Laboratories Licensing Corporation Speech dereverberation methods, devices and systems
US9001994B1 (en) * 2013-09-24 2015-04-07 Rawles Llc Non-uniform adaptive echo cancellation
US9324364B2 (en) 2014-07-17 2016-04-26 International Business Machines Corporation Constraining FIR filter taps in an adaptive architecture
US9236084B1 (en) 2014-07-17 2016-01-12 International Business Machines Corporation Dynamic gain control for use with adaptive equalizers
GB2545263B (en) 2015-12-11 2019-05-15 Acano Uk Ltd Joint acoustic echo control and adaptive array processing
GB201709849D0 (en) * 2017-06-20 2017-08-02 Nokia Technologies Oy Processing audio signals
US10959018B1 (en) * 2019-01-18 2021-03-23 Amazon Technologies, Inc. Method for autonomous loudspeaker room adaptation
EP4199368B1 (en) * 2020-08-12 2025-08-20 Auzdsp Co., Ltd. Adaptive delay diversity filter and method using same
US20250168588A1 (en) * 2023-11-21 2025-05-22 Varjo Technologies Oy Method and system for enhancing audio fidelity in a virtual teleconferencing environment

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JPH01269323A (ja) * 1988-04-21 1989-10-26 Nec Corp エコーキャンセラー装置
US5272695A (en) * 1990-09-14 1993-12-21 Nippon Telegraph And Telephone Corporation Subband echo canceller with adjustable coefficients using a series of step sizes

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JP2792311B2 (ja) * 1992-01-31 1998-09-03 日本電気株式会社 多チャンネルエコー除去方法および装置
JP2654894B2 (ja) * 1992-09-30 1997-09-17 日本電信電話株式会社 反響消去装置およびその方法
JPH06318885A (ja) * 1993-03-11 1994-11-15 Nec Corp 帯域分割適応フィルタによる未知システム同定の方法及び装置

Patent Citations (2)

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JPH01269323A (ja) * 1988-04-21 1989-10-26 Nec Corp エコーキャンセラー装置
US5272695A (en) * 1990-09-14 1993-12-21 Nippon Telegraph And Telephone Corporation Subband echo canceller with adjustable coefficients using a series of step sizes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160095008A (ko) * 2013-12-05 2016-08-10 마이크로소프트 테크놀로지 라이센싱, 엘엘씨 음향 에코 제거를 위한 룸 임펄스 응답을 추정하는 방법
KR102223695B1 (ko) 2013-12-05 2021-03-04 마이크로소프트 테크놀로지 라이센싱, 엘엘씨 음향 에코 제거를 위한 룸 임펄스 응답을 추정하는 방법

Also Published As

Publication number Publication date
EP0719028A3 (en) 1999-04-28
EP0719028A2 (en) 1996-06-26
JP3568665B2 (ja) 2004-09-22
DE69531336T2 (de) 2004-04-15
TW281849B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1996-07-21
CA2162413C (en) 2001-08-07
JPH08251084A (ja) 1996-09-27
EP0719028B1 (en) 2003-07-23
SG52194A1 (en) 1998-09-28
CA2162413A1 (en) 1996-06-24
KR960028517A (ko) 1996-07-22
US5548642A (en) 1996-08-20
DE69531336D1 (de) 2003-08-28

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