DE69735396D1 - Akustischer Teilband-Echokompensator - Google Patents

Akustischer Teilband-Echokompensator

Info

Publication number: DE69735396D1
Authority: DE; Germany
Prior art keywords: echo canceller; subband echo; acoustic; acoustic subband; canceller
Prior art date: 1996-07-23
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 - Lifetime

Application number

DE69735396T

Other languages

English (en)

Other versions

DE69735396T2 (de

Inventor

Yoshihiro Ono

Shigeru Ono

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.)

NEC Corp

Original Assignee

NEC 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.)

1996-07-23

Filing date

1997-07-22

Publication date

2006-05-04

1997-07-22 Application filed by NEC Corp filed Critical NEC Corp

2006-05-04 Publication of DE69735396D1 publication Critical patent/DE69735396D1/de

2006-08-24 Application granted granted Critical

2006-08-24 Publication of DE69735396T2 publication Critical patent/DE69735396T2/de

2017-07-23 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

DE69735396T 1996-07-23 1997-07-22 Akustischer Teilband-Echokompensator Expired - Lifetime DE69735396T2 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP19305996		1996-07-23
JP08193059A JP3099870B2 (ja)	1996-07-23	1996-07-23	音響エコーキャンセラ

Publications (2)

Publication Number	Publication Date
DE69735396D1 true DE69735396D1 (de)	2006-05-04
DE69735396T2 DE69735396T2 (de)	2006-08-24

Family

ID=16301516

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE69735396T Expired - Lifetime DE69735396T2 (de)	1996-07-23	1997-07-22	Akustischer Teilband-Echokompensator

Country Status (5)

Country	Link
US (1)	US5859914A (de)
EP (1)	EP0821513B1 (de)
JP (1)	JP3099870B2 (de)
AU (1)	AU726240B2 (de)
DE (1)	DE69735396T2 (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP3139405B2 (ja) *	1997-02-28	2001-02-26	日本電気株式会社	エコーキャンセラ
JP3267556B2 (ja) *	1998-02-18	2002-03-18	沖電気工業株式会社	エコー除去装置および送話器
JP3159176B2 (ja) *	1998-06-11	2001-04-23	日本電気株式会社	帯域分割適応フィルタによる未知システム同定方法及び装置
KR20000057739A (ko) *	1999-01-12	2000-09-25	비센트 비.인그라시아	서브대역 에코 소거기 및 그 방법
GB2348350B (en)	1999-03-26	2004-02-18	Mitel Corp	Echo cancelling/suppression for handsets
US6510224B1 (en)	1999-05-20	2003-01-21	Telefonaktiebolaget L M Ericsson	Enhancement of near-end voice signals in an echo suppression system
US6771772B1 (en)	1999-07-09	2004-08-03	Oguz Tanrikulu	Method and apparatus for fast network bulk delay and span estimation for line echo cancellation
US6278785B1 (en) *	1999-09-21	2001-08-21	Acoustic Technologies, Inc.	Echo cancelling process with improved phase control
US6580795B1 (en) *	1999-10-14	2003-06-17	Motorola, Inc.	Echo canceller for a full-duplex communication system and method therefor
GB0023207D0 (en) *	2000-09-21	2000-11-01	Royal College Of Art	Apparatus for acoustically improving an environment
JP2001251167A (ja) *	2000-03-03	2001-09-14	Nec Corp	適応フィルタ
KR20020036542A (ko) *	2000-11-10	2002-05-16	김승범	반향 제거 장치
JP2004023481A (ja) *	2002-06-17	2004-01-22	Alpine Electronics Inc	音響信号処理装置及び方法並びにオーディオ装置
US7289554B2 (en) *	2003-07-15	2007-10-30	Brooktree Broadband Holding, Inc.	Method and apparatus for channel equalization and cyclostationary interference rejection for ADSL-DMT modems
US8457614B2 (en) *	2005-04-07	2013-06-04	Clearone Communications, Inc.	Wireless multi-unit conference phone
US8275120B2 (en) *	2006-05-30	2012-09-25	Microsoft Corp.	Adaptive acoustic echo cancellation
EP1885154B1 (de) *	2006-08-01	2013-07-03	Nuance Communications, Inc.	Enthallung eines Mikrofonsignals
JP5034607B2 (ja) *	2006-11-02	2012-09-26	株式会社日立製作所	音響エコーキャンセラシステム
JP5423966B2 (ja) *	2007-08-27	2014-02-19	日本電気株式会社	特定信号消去方法、特定信号消去装置、適応フィルタ係数更新方法、適応フィルタ係数更新装置及びコンピュータプログラム
ATE521064T1 (de) *	2007-10-08	2011-09-15	Harman Becker Automotive Sys	Verstärkung und spektralformenanpassung bei der verarbeitung von audiosignalen
WO2009047858A1 (ja) *	2007-10-12	2009-04-16	Fujitsu Limited	エコー抑圧システム、エコー抑圧方法、エコー抑圧プログラム、エコー抑圧装置、音出力装置、オーディオシステム、ナビゲーションシステム及び移動体
US8050398B1 (en)	2007-10-31	2011-11-01	Clearone Communications, Inc.	Adaptive conferencing pod sidetone compensator connecting to a telephonic device having intermittent sidetone
US8199927B1 (en)	2007-10-31	2012-06-12	ClearOnce Communications, Inc.	Conferencing system implementing echo cancellation and push-to-talk microphone detection using two-stage frequency filter
JP2009188457A (ja) *	2008-02-01	2009-08-20	Sk Telesys Co Ltd	移動通信用の無線中継器における干渉除去装置及び方法
US9363386B2 (en) *	2011-11-23	2016-06-07	Qualcomm Incorporated	Acoustic echo cancellation based on ultrasound motion detection
US10135968B2 (en)	2013-04-15	2018-11-20	Nuance Communications, Inc.	System and method for acoustic echo cancellation
JP6109450B2 (ja)	2014-12-15	2017-04-05	三菱電機株式会社	エコーキャンセラ装置およびエコーキャンセル方法
JP6279172B2 (ja) *	2015-11-16	2018-02-14	三菱電機株式会社	エコーキャンセラ装置及び通話装置
CN109451398B (zh) *	2018-11-16	2021-03-19	珠海市杰理科技股份有限公司	声反馈消除设备、声反馈消除方法、音频处理***
US10917074B2 (en)	2019-03-29	2021-02-09	Bose Corporation	Subband adaptive filter for systems with partially acausal transfer functions

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2628918B1 (fr) *	1988-03-15	1990-08-10	France Etat	Dispositif annuleur d'echo a filtrage en sous-bandes de frequence
GB2240452A (en) *	1990-01-10	1991-07-31	Motorola Inc	Echo canceller has plurality of sub-band channels each with its own adaptive filter
CA2036078C (en) *	1990-02-21	1994-07-26	Fumio Amano	Sub-band acoustic echo canceller
JPH04123621A (ja) *	1990-09-14	1992-04-23	Nippon Telegr & Teleph Corp <Ntt>	反響消去装置
US5548642A (en) *	1994-12-23	1996-08-20	At&T Corp.	Optimization of adaptive filter tap settings for subband acoustic echo cancelers in teleconferencing
US5566167A (en) *	1995-01-04	1996-10-15	Lucent Technologies Inc.	Subband echo canceler
US5561668A (en) *	1995-07-06	1996-10-01	Coherent Communications Systems Corp.	Echo canceler with subband attenuation and noise injection control

1996
- 1996-07-23 JP JP08193059A patent/JP3099870B2/ja not_active Expired - Fee Related
1997
- 1997-07-18 US US08/897,066 patent/US5859914A/en not_active Expired - Lifetime
- 1997-07-22 EP EP97112511A patent/EP0821513B1/de not_active Expired - Lifetime
- 1997-07-22 DE DE69735396T patent/DE69735396T2/de not_active Expired - Lifetime
- 1997-07-23 AU AU30123/97A patent/AU726240B2/en not_active Ceased

Also Published As

Publication number	Publication date
EP0821513A1 (de)	1998-01-28
JP3099870B2 (ja)	2000-10-16
JPH1041859A (ja)	1998-02-13
AU726240B2 (en)	2000-11-02
DE69735396T2 (de)	2006-08-24
AU3012397A (en)	1998-01-29
US5859914A (en)	1999-01-12
EP0821513B1 (de)	2006-03-08

Legal Events

Date	Code	Title	Description
2007-03-29	8364	No opposition during term of opposition

Publication	Publication Date	Title
DE69735396D1 (de)	2006-05-04	Akustischer Teilband-Echokompensator
DE69632851D1 (de)	2004-08-12	Akustischer Teilband-Echokompensator
DE69522088D1 (de)	2001-09-13	Teilbandechokompensator
DE69634027D1 (de)	2005-01-20	Akustischer Teilband-Echokompensator
DE69636361D1 (de)	2006-08-31	Akustischer Echokompensator
DE69835644D1 (de)	2006-10-05	Akustischer Echokompensator
DE69110700D1 (de)	1995-08-03	Akustischer Teilband-Echokompensator.
IL132743A0 (en)	2001-03-19	Acoustic echo canceler
DE69429947D1 (de)	2002-04-04	Echokompensator
DE69735746D1 (de)	2006-06-01	Akustische Oberflächenwellenanordnung
ID20143A (id)	1998-10-08	Peralatan akustik
GB2330745B (en)	2002-08-21	Nonlinear processor for acoustic echo canceller
DE69516106D1 (de)	2000-05-11	Akustische Oberflächenwellenanordnung
GB2311707B (en)	1998-02-25	Echo canceller
DK0764387T3 (da)	1999-06-07	Akustisk transducer
DE69716238D1 (de)	2002-11-14	Akustische oberflächenwellenanordnung
AU4599300A (en)	2000-12-12	Acoustic echo cancellation
DE69614463D1 (de)	2001-09-20	Akustische Oberflächenwellenanordnung
DE19882141T1 (de)	2000-01-13	Adaptive Doppelfilter-Echolöschung
DK0802700T3 (da)	2004-07-19	Elektroakustisk transducer
DE69611771D1 (de)	2001-03-22	Akustische Oberflächenwellenanordnung
DE69634988D1 (de)	2005-09-01	Akustische wandlerkomponenten
DE69632426D1 (de)	2004-06-17	Akustischer Echokompensator
DE69617286D1 (de)	2002-01-10	Akustische Oberflächenwellenanordnung
EP1097561A4 (de)	2004-08-04	Akustischer echokompensator