DE69835644D1 - Akustischer Echokompensator - Google Patents

Akustischer Echokompensator

Info

Publication number: DE69835644D1
Authority: DE; Germany
Prior art keywords: acoustic echo; echo canceler; canceler; acoustic; echo
Prior art date: 1997-08-01
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

Application number

DE69835644T

Other languages

English (en)

Other versions

DE69835644T2 (de

Inventor

Hui Siew Kok

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.)

Bitwave Pte Ltd

Original Assignee

Bitwave Pte Ltd

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.)

1997-08-01

Filing date

1998-07-30

Publication date

2006-10-05

1998-07-30 Application filed by Bitwave Pte Ltd filed Critical Bitwave Pte Ltd

2006-10-05 Publication of DE69835644D1 publication Critical patent/DE69835644D1/de

2007-08-23 Application granted granted Critical

2007-08-23 Publication of DE69835644T2 publication Critical patent/DE69835644T2/de

2018-07-31 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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)

DE69835644T 1997-08-01 1998-07-30 Akustischer Echokompensator Expired - Fee Related DE69835644T2 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SG1997002744A SG71035A1 (en)	1997-08-01	1997-08-01	Acoustic echo canceller
SG9702744		1997-08-01

Publications (2)

Publication Number	Publication Date
DE69835644D1 true DE69835644D1 (de)	2006-10-05
DE69835644T2 DE69835644T2 (de)	2007-08-23

Family

ID=20429709

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE69835644T Expired - Fee Related DE69835644T2 (de)	1997-08-01	1998-07-30	Akustischer Echokompensator

Country Status (4)

Country	Link
US (1)	US6249581B1 (de)
EP (1)	EP0895397B9 (de)
DE (1)	DE69835644T2 (de)
SG (1)	SG71035A1 (de)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19850272A1 (de) *	1998-10-31	2000-05-04	Alcatel Sa	Verfahren zur Verbesserung der Echounterdrückung in einem Telekommunikaionssystem
FR2802367B1 (fr)	1999-12-14	2006-08-18	France Telecom	Procede temps reel de traitement et de gestion pour l'annulation d'echo entre haut-parleur et microphone d'un terminal informatique
EP1243082A1 (de)	1999-12-17	2002-09-25	Nokia Corporation	Zeitverzögerungsmesssystem in einem paketnetz
US6622030B1 (en) *	2000-06-29	2003-09-16	Ericsson Inc.	Echo suppression using adaptive gain based on residual echo energy
US6766019B1 (en) *	2000-07-21	2004-07-20	Agere Systems Inc.	Method and apparatus for performing double-talk detection in acoustic echo cancellation
DE10043064B4 (de) *	2000-09-01	2004-07-08	Dietmar Dr. Ruwisch	Verfahren und Vorrichtung zur Elimination von Lautsprecherinterferenzen aus Mikrofonsignalen
ATE431110T1 (de)	2001-02-27	2009-05-15	Smith & Nephew Inc	Chirurgisches navigationssystem zur teilweisen kniegelenkrekonstruktion
US7547307B2 (en) *	2001-02-27	2009-06-16	Smith & Nephew, Inc.	Computer assisted knee arthroplasty instrumentation, systems, and processes
US6889066B2 (en) *	2001-03-27	2005-05-03	Qualcomm Incorporated	Network echo suppression in mobile stations
EP1413168A2 (de) *	2001-07-20	2004-04-28	Koninklijke Philips Electronics N.V.	Schallverstärkungsystem mit echounterdrücker und lautsprecherstrahlformer
KR20040019362A (ko) *	2001-07-20	2004-03-05	코닌클리케 필립스 일렉트로닉스 엔.브이.	후처리기로서 멀티 마이크로폰 에코 억제기를 가지는 음향보강 시스템
JP2005516724A (ja)	2002-02-11	2005-06-09	スミスアンドネフューインコーポレーテッド	画像案内式骨折整復
US7409057B1 (en)	2002-07-03	2008-08-05	Marvell International Ltd.	Nonlinear echo compensator for class B transmitter line driver
US7272224B1 (en) *	2003-03-03	2007-09-18	Apple Inc.	Echo cancellation
US7363334B2 (en)	2003-08-28	2008-04-22	Accoutic Processing Technology, Inc.	Digital signal-processing structure and methodology featuring engine-instantiated, wave-digital-filter componentry, and fabrication thereof
US20050065778A1 (en) *	2003-09-24	2005-03-24	Mastrianni Steven J.	Secure speech
US7862570B2 (en)	2003-10-03	2011-01-04	Smith & Nephew, Inc.	Surgical positioners
US7764985B2 (en)	2003-10-20	2010-07-27	Smith & Nephew, Inc.	Surgical navigation system component fault interfaces and related processes
ATE495706T1 (de)	2003-11-14	2011-02-15	Smith & Nephew Inc	Verstellbare chirurgische schneidesysteme
WO2005096982A1 (en)	2004-03-31	2005-10-20	Smith & Nephew, Inc.	Methods and apparatuses for providing a reference array input device
EP1737375B1 (de)	2004-04-21	2021-08-11	Smith & Nephew, Inc	Computerunterstützte navigationssysteme für die schulter-arthroplastie
US7395790B2 (en) *	2004-11-18	2008-07-08	S&S Cycle, Inc.	Reed valve breather for evolution engine
JP2008531091A (ja)	2005-02-22	2008-08-14	スミスアンドネフューインコーポレーテッド	直列型ミリングシステム
WO2006111370A1 (en) *	2005-04-19	2006-10-26	Epfl (Ecole Polytechnique Federale De Lausanne)	A method and device for removing echo in a multi-channel audio signal
US7647077B2 (en)	2005-05-31	2010-01-12	Bitwave Pte Ltd	Method for echo control of a wireless headset
US7856098B1 (en) *	2005-09-15	2010-12-21	Mindspeed Technologies, Inc.	Echo cancellation and control in discrete cosine transform domain
DE102008039329A1 (de) *	2008-01-25	2009-07-30	Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.	Vorrichtung und Verfahren zur Berechnung von Steuerinformationen für ein Echounterdrückungsfilter und Vorrichtung und Verfahren zur Berechnung eines Verzögerungswerts
NO332437B1 (no) *	2010-01-18	2012-09-17	Cisco Systems Int Sarl	Apparat og fremgangsmate for a supprimere et akustisk ekko
EP2710787A1 (de) *	2011-05-17	2014-03-26	Google, Inc.	Nichtlineare nachverarbeitung für akustische echounterdrückung
US9065895B2 (en)	2012-02-22	2015-06-23	Broadcom Corporation	Non-linear echo cancellation
US9628141B2 (en) *	2012-10-23	2017-04-18	Interactive Intelligence Group, Inc.	System and method for acoustic echo cancellation
US9083782B2 (en) *	2013-05-08	2015-07-14	Blackberry Limited	Dual beamform audio echo reduction
CN103414453B (zh) *	2013-08-19	2016-02-24	北京无线电计量测试研究所	一种频率源短稳参数数字化检测方法及装置
CN109448748B (zh) *	2018-12-17	2021-08-03	嘉楠明芯(北京)科技有限公司	一种用于回声消除的滤波方法及装置、设备、介质
CN111917926B (zh) *	2019-05-09	2021-08-06	上海触乐信息科技有限公司	一种通信终端中的回声消除方法、装置及终端设备

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3699271A (en) *	1970-11-16	1972-10-17	Bell Telephone Labor Inc	Speech processor using multiband controlled center clipping
US3784747A (en) *	1971-12-03	1974-01-08	Bell Telephone Labor Inc	Speech suppression by predictive filtering
DE3118473C2 (de) *	1981-05-09	1987-02-05	Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg	Verfahren zur Aufbereitung elektrischer Signale mit einer digitalen Filteranordnung
US4644108A (en) *	1982-10-27	1987-02-17	International Business Machines Corporation	Adaptive sub-band echo suppressor
US4562312A (en) *	1983-02-17	1985-12-31	At&T Bell Laboratories	Subsampling delay estimator for an echo canceler
CA1332187C (en) *	1986-10-30	1994-09-27	Fumio Amano	Echo canceller with short processing delay and decreased multiplication number
NL8701633A (nl) *	1987-07-10	1989-02-01	Philips Nv	Digitale echocompensator.
US5588089A (en) *	1990-10-23	1996-12-24	Koninklijke Ptt Nederland N.V.	Bark amplitude component coder for a sampled analog signal and decoder for the coded signal
US5450522A (en) *	1991-08-19	1995-09-12	U S West Advanced Technologies, Inc.	Auditory model for parametrization of speech
DE4316297C1 (de) *	1993-05-14	1994-04-07	Fraunhofer Ges Forschung	Frequenzanalyseverfahren
DE69530961T2 (de) *	1994-04-12	2004-05-13	Koninklijke Philips Electronics N.V.	Signalverstärkersystem mit verbesserter echounterdrückung
US5659619A (en) *	1994-05-11	1997-08-19	Aureal Semiconductor, Inc.	Three-dimensional virtual audio display employing reduced complexity imaging filters

1997
- 1997-08-01 SG SG1997002744A patent/SG71035A1/en unknown
1998
- 1998-07-29 US US09/124,804 patent/US6249581B1/en not_active Expired - Lifetime
- 1998-07-30 DE DE69835644T patent/DE69835644T2/de not_active Expired - Fee Related
- 1998-07-30 EP EP98306066A patent/EP0895397B9/de not_active Expired - Lifetime

Also Published As

Publication number	Publication date
EP0895397B1 (de)	2006-08-23
US6249581B1 (en)	2001-06-19
DE69835644T2 (de)	2007-08-23
SG71035A1 (en)	2000-03-21
EP0895397A2 (de)	1999-02-03
EP0895397A3 (de)	1999-08-18
EP0895397B9 (de)	2007-01-17

Publication	Publication Date	Title
DE69835644D1 (de)	2006-10-05	Akustischer Echokompensator
DE69636361D1 (de)	2006-08-31	Akustischer Echokompensator
DE69840961D1 (de)	2009-08-20	Akustischer echokompensator
DE69735396D1 (de)	2006-05-04	Akustischer Teilband-Echokompensator
DE69632851D1 (de)	2004-08-12	Akustischer Teilband-Echokompensator
DE69522088D1 (de)	2001-09-13	Teilbandechokompensator
DE69838266D1 (de)	2007-09-27	Akustische Geräuschverminderung
ID20143A (id)	1998-10-08	Peralatan akustik
DE69634027D1 (de)	2005-01-20	Akustischer Teilband-Echokompensator
DE69429947D1 (de)	2002-04-04	Echokompensator
DE69528512D1 (de)	2002-11-14	Aktiver akustischer Überzug
ID20762A (id)	1999-03-04	Peralatan pengeras suara
DE69903012D1 (de)	2002-10-24	Echokompensation
DE69814205D1 (de)	2003-06-12	Akustische Oberflächenwellenanordnung
DE60010030D1 (de)	2004-05-27	Echounterdrückungsvorrichtung
GB2330745B (en)	2002-08-21	Nonlinear processor for acoustic echo canceller
TR199802497A3 (tr)	2000-04-21	Binalar için akustik yapi.
DE69504665D1 (de)	1998-10-15	Akustischer wandler
DE69841878D1 (de)	2010-10-21	Akustische Oberflächenwellenanordnung
DE19882141T1 (de)	2000-01-13	Adaptive Doppelfilter-Echolöschung
DE69842149D1 (de)	2011-04-14	Akustische Oberflächenwellenanordnung
DE69830139D1 (de)	2005-06-16	Ultraschall lockenwickelgerät
DE69632426D1 (de)	2004-06-17	Akustischer Echokompensator
EP1097561A4 (de)	2004-08-04	Akustischer echokompensator
DE69534663D1 (de)	2006-01-12	Echo-Löscher

Legal Events

Date	Code	Title	Description
2007-09-27	8364	No opposition during term of opposition
2008-11-13	8328	Change in the person/name/address of the agent	Representative=s name: JOSTARNDT PATENTANWALTS-AG, 52074 AACHEN
2010-05-20	8339	Ceased/non-payment of the annual fee