DE69933221D1 - Adaptiver filter und akustischer echokompensator mit demselben - Google Patents

Adaptiver filter und akustischer echokompensator mit demselben

Info

Publication number
DE69933221D1
DE69933221D1 DE69933221T DE69933221T DE69933221D1 DE 69933221 D1 DE69933221 D1 DE 69933221D1 DE 69933221 T DE69933221 T DE 69933221T DE 69933221 T DE69933221 T DE 69933221T DE 69933221 D1 DE69933221 D1 DE 69933221D1
Authority
DE
Germany
Prior art keywords
same
adaptive filter
acoustic echo
echo compensator
compensator
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 - Lifetime
Application number
DE69933221T
Other languages
English (en)
Other versions
DE69933221T2 (de
Inventor
Werner Armbruester
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of DE69933221D1 publication Critical patent/DE69933221D1/de
Publication of DE69933221T2 publication Critical patent/DE69933221T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0223—Computation saving measures; Accelerating measures
    • H03H17/0227—Measures concerning the coefficients
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H21/0025—Particular filtering methods
    • H03H2021/0041—Subband decomposition
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Function (AREA)
DE69933221T 1998-07-13 1999-07-01 Adaptiver filter und akustischer echokompensator mit demselben Expired - Lifetime DE69933221T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19831320A DE19831320A1 (de) 1998-07-13 1998-07-13 Digitales adaptives Filter und akustischer Echokompensator
DE19831320 1998-07-13
PCT/EP1999/004549 WO2000004698A1 (en) 1998-07-13 1999-07-01 Digital adaptive filter and acoustic echo canceller using the same

Publications (2)

Publication Number Publication Date
DE69933221D1 true DE69933221D1 (de) 2006-10-26
DE69933221T2 DE69933221T2 (de) 2007-09-13

Family

ID=7873876

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19831320A Withdrawn DE19831320A1 (de) 1998-07-13 1998-07-13 Digitales adaptives Filter und akustischer Echokompensator
DE69933221T Expired - Lifetime DE69933221T2 (de) 1998-07-13 1999-07-01 Adaptiver filter und akustischer echokompensator mit demselben

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19831320A Withdrawn DE19831320A1 (de) 1998-07-13 1998-07-13 Digitales adaptives Filter und akustischer Echokompensator

Country Status (9)

Country Link
US (1) US6842516B1 (de)
EP (1) EP1097562B1 (de)
JP (2) JP4424851B2 (de)
KR (1) KR100716377B1 (de)
CN (3) CN1595827B (de)
AU (1) AU767771B2 (de)
BR (1) BR9912046A (de)
DE (2) DE19831320A1 (de)
WO (1) WO2000004698A1 (de)

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002009675A (ja) 2000-06-26 2002-01-11 Nec Corp 多重化回線用エコー除去方法及び装置
KR100377549B1 (ko) * 2001-04-30 2003-03-26 현대네트웍스 주식회사 선형 변환을 이용한 적응 반향 제거 장치
US7103177B2 (en) * 2001-11-13 2006-09-05 Oguz Tanrikulu Reduced complexity transform-domain adaptive filter using selective partial updates
DE10158311A1 (de) * 2001-11-28 2003-06-18 Rohde & Schwarz Verfahren und Vorrichtung zum Erfassen eines von dem Maximum eines monofrequenten Signals abhängigen Schätzwerts
US7433908B2 (en) 2002-07-16 2008-10-07 Tellabs Operations, Inc. Selective-partial-update proportionate normalized least-mean-square adaptive filtering for network echo cancellation
US7450518B2 (en) * 2003-03-12 2008-11-11 Broadcom Corporation Sparse channel dual-error tracking adaptive filter/equalizer
DE10329055B4 (de) * 2003-06-27 2005-10-13 Infineon Technologies Ag Verfahren und Vorrichtung zur Echokompensation
WO2005046076A1 (ja) * 2003-11-11 2005-05-19 Mitsubishi Denki Kabushiki Kaisha エコー抑圧装置
US7386120B2 (en) * 2004-04-30 2008-06-10 Lsi Corporation Echo canceller having a frequency domain active region location estimator
US7352858B2 (en) * 2004-06-30 2008-04-01 Microsoft Corporation Multi-channel echo cancellation with round robin regularization
US20060023061A1 (en) * 2004-07-27 2006-02-02 Vaszary Mark K Teleconference audio quality monitoring
US7602867B2 (en) 2004-08-17 2009-10-13 Broadcom Corporation System and method for linear distortion estimation by way of equalizer coefficients
US8761385B2 (en) * 2004-11-08 2014-06-24 Nec Corporation Signal processing method, signal processing device, and signal processing program
GB2420951B (en) * 2004-12-02 2007-06-06 Toshiba Res Europ Ltd Decoder for a multiplexed transmission system
CN1719516B (zh) * 2005-07-15 2010-04-14 北京中星微电子有限公司 自适应滤波装置以及自适应滤波方法
JP4692291B2 (ja) * 2006-01-13 2011-06-01 沖電気工業株式会社 エコーキャンセラ
EP1879293B1 (de) * 2006-07-10 2019-02-20 Harman Becker Automotive Systems GmbH Partitionierte Schnellfaltung in der Zeit- und Frequenzdomäne
US8433061B2 (en) * 2007-12-10 2013-04-30 Microsoft Corporation Reducing echo
US8744069B2 (en) * 2007-12-10 2014-06-03 Microsoft Corporation Removing near-end frequencies from far-end sound
US8219387B2 (en) * 2007-12-10 2012-07-10 Microsoft Corporation Identifying far-end sound
US8594173B2 (en) 2008-08-25 2013-11-26 Dolby Laboratories Licensing Corporation Method for determining updated filter coefficients of an adaptive filter adapted by an LMS algorithm with pre-whitening
KR100968707B1 (ko) * 2008-12-15 2010-07-06 성균관대학교산학협력단 개선된 가변 에러 데이터 정규화 스텝 사이즈 최소평균자승에러 적응 필터 시스템
JP5932337B2 (ja) * 2008-12-22 2016-06-08 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 遠隔端通話者信号と複合信号との間の音響カップリングの特定
EP2221983B1 (de) * 2009-02-20 2011-08-31 Harman Becker Automotive Systems GmbH Akustische Echokompensierung
EP2417739B1 (de) 2009-07-03 2018-03-21 Huawei Technologies Co. Ltd. Adaptives filter
CN101888455B (zh) * 2010-04-09 2013-07-03 熔点网讯(北京)科技有限公司 一种频域自适应回声抵消方法
US8693677B2 (en) * 2010-04-27 2014-04-08 Freescale Semiconductor, Inc. Techniques for updating filter coefficients of an adaptive filter
EP2444967A1 (de) * 2010-10-25 2012-04-25 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Echounterdrückung mit Modellierung verzögerter Nachhallkomponenten
WO2012105880A1 (en) * 2011-02-03 2012-08-09 Telefonaktiebolaget L M Ericsson (Publ) Estimation and suppression of harmonic loudspeaker nonlinearities
CN102185991A (zh) * 2011-03-01 2011-09-14 杭州华三通信技术有限公司 回声消除方法、系统和装置
US8804977B2 (en) 2011-03-18 2014-08-12 Dolby Laboratories Licensing Corporation Nonlinear reference signal processing for echo suppression
US9100257B2 (en) * 2012-01-25 2015-08-04 Marvell World Trade Ltd. Systems and methods for composite adaptive filtering
US8909990B2 (en) 2012-08-04 2014-12-09 Microsoft Corporation Historical software diagnostics using lightweight process snapshots
US9628141B2 (en) 2012-10-23 2017-04-18 Interactive Intelligence Group, Inc. System and method for acoustic echo cancellation
JP6165503B2 (ja) * 2013-05-21 2017-07-19 シャープ株式会社 エコー抑圧装置およびエコー抑圧方法
US10289411B2 (en) 2013-11-18 2019-05-14 Microsoft Technology Licensing, Llc Diagnosing production applications
EP2996352B1 (de) * 2014-09-15 2019-04-17 Nxp B.V. Audiosystem und Verfahren unter Verwendung eines Lautsprecherausgangssignals für die Windgeräuschunterdrückung
GB2527865B (en) 2014-10-30 2016-12-14 Imagination Tech Ltd Controlling operational characteristics of an acoustic echo canceller
CN104660217B (zh) * 2015-01-09 2018-01-23 深圳市美的连医疗电子股份有限公司 一种信号分析方法及终端
EP3274992B1 (de) * 2015-03-27 2020-11-04 Dolby Laboratories Licensing Corporation Adaptive audiofilterung
EP3125429A1 (de) * 2015-07-28 2017-02-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Adaptive filtervorrichtung der partitionierten blockfrequenzdomäne mit adaptationsmodulen und korrekturmodulen
CN106571138B (zh) * 2015-10-09 2020-08-11 电信科学技术研究院 一种信号端点的检测方法、检测装置及检测设备
CN109643553B (zh) 2016-06-08 2023-09-05 杜比实验室特许公司 使用稀疏预测滤波器集的调适的回波估计及管理
US10594869B2 (en) * 2017-08-03 2020-03-17 Bose Corporation Mitigating impact of double talk for residual echo suppressors
US10542153B2 (en) 2017-08-03 2020-01-21 Bose Corporation Multi-channel residual echo suppression
EP3692704B1 (de) 2017-10-03 2023-09-06 Bose Corporation Räumlicher doppelsprechdetektor
CN108010536B (zh) * 2017-12-05 2020-07-14 深圳市声扬科技有限公司 回声消除方法、装置、系统及存储介质
US10951859B2 (en) 2018-05-30 2021-03-16 Microsoft Technology Licensing, Llc Videoconferencing device and method
US10938992B1 (en) * 2019-05-06 2021-03-02 Polycom, Inc. Advanced audio feedback reduction utilizing adaptive filters and nonlinear processing
US10964305B2 (en) 2019-05-20 2021-03-30 Bose Corporation Mitigating impact of double talk for residual echo suppressors
CN114531611B (zh) * 2020-11-23 2024-04-02 深圳Tcl数字技术有限公司 一种音量调节方法、存储介质及终端设备
CN116860124B (zh) * 2023-09-04 2024-05-03 深圳市坤巨实业有限公司 一种触摸屏的噪声控制方法及系统

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5386472A (en) * 1990-08-10 1995-01-31 General Motors Corporation Active noise control system
JPH04123621A (ja) * 1990-09-14 1992-04-23 Nippon Telegr & Teleph Corp <Ntt> 反響消去装置
US5416845A (en) * 1993-04-27 1995-05-16 Noise Cancellation Technologies, Inc. Single and multiple channel block adaptive methods and apparatus for active sound and vibration control
JP3477763B2 (ja) * 1993-11-02 2003-12-10 富士通株式会社 エコーキャンセラ
JP3008763B2 (ja) * 1993-12-28 2000-02-14 日本電気株式会社 適応フィルタによるシステム同定の方法および装置
JP3354286B2 (ja) * 1994-06-04 2002-12-09 株式会社ケンウッド マルチパス除去フィルタ
JPH08125593A (ja) * 1994-10-28 1996-05-17 Fujitsu Ltd フィルタ係数の推定装置
JP3381112B2 (ja) * 1995-03-09 2003-02-24 ソニー株式会社 エコー除去装置
US5590121A (en) * 1995-03-30 1996-12-31 Lucent Technologies Inc. Method and apparatus for adaptive filtering
JP3403549B2 (ja) * 1995-05-29 2003-05-06 松下電器産業株式会社 エコーキャンセラ
DE19525381B4 (de) * 1995-07-12 2006-01-05 Deutsche Telekom Ag Verfahren zur Steuerung der Schrittweite eines Echokompensators mit adaptivem Filter
DE19525382B4 (de) * 1995-07-12 2005-12-22 Deutsche Telekom Ag Verfahren zur Steuerung der Schrittweite eines Echokompensators mit adaptivem Filter
US5734715A (en) * 1995-09-13 1998-03-31 France Telecom Process and device for adaptive identification and adaptive echo canceller relating thereto
JP3199155B2 (ja) * 1995-10-18 2001-08-13 日本電信電話株式会社 反響消去装置
US5738104A (en) * 1995-11-08 1998-04-14 Salutron, Inc. EKG based heart rate monitor
DE19601405B4 (de) * 1996-01-17 2007-02-01 Deutsche Telekom Ag Verfahren und Vorrichtung zur Systemidentifikation und Echokompensation in Übertragungssystemen
US5721782A (en) * 1996-03-25 1998-02-24 Motorola, Inc. Partitioned echo canceler utilizing decimation echo location
JP2882364B2 (ja) * 1996-06-14 1999-04-12 日本電気株式会社 雑音消去方法及び雑音消去装置
DE19635271C2 (de) * 1996-08-30 2001-08-30 Siemens Ag Verfahren zur Schätzung von Kanalkoeffizienten und adaptives Filter für zeitveränderliche Kanäle
FR2764469B1 (fr) * 1997-06-09 2002-07-12 France Telecom Procede et dispositif de traitement optimise d'un signal perturbateur lors d'une prise de son
JP4417553B2 (ja) * 1998-02-13 2010-02-17 テレフオンアクチーボラゲット エル エム エリクソン（パブル） 雑音環境におけるフィルタ適応化の制御方法および装置
US6434110B1 (en) * 1998-03-20 2002-08-13 Cirrus Logic, Inc. Full-duplex speakerphone circuit including a double-talk detector

Also Published As

Publication number Publication date
WO2000004698A1 (en) 2000-01-27
AU767771B2 (en) 2003-11-27
JP4424851B2 (ja) 2010-03-03
EP1097562A1 (de) 2001-05-09
CN1317194A (zh) 2001-10-10
JP2010045804A (ja) 2010-02-25
AU5409299A (en) 2000-02-07
JP4975073B2 (ja) 2012-07-11
EP1097562B1 (de) 2006-09-13
KR100716377B1 (ko) 2007-05-11
CN101600030A (zh) 2009-12-09
BR9912046A (pt) 2001-04-03
CN1595827A (zh) 2005-03-16
DE69933221T2 (de) 2007-09-13
US6842516B1 (en) 2005-01-11
CN100531274C (zh) 2009-08-19
CN1595827B (zh) 2011-05-25
DE19831320A1 (de) 2000-01-27
JP2002521871A (ja) 2002-07-16
KR20010071860A (ko) 2001-07-31

Similar Documents

Publication Publication Date Title
DE69933221D1 (de) Adaptiver filter und akustischer echokompensator mit demselben
DE69840961D1 (de) Akustischer echokompensator
DE69806580D1 (de) Adaptives filter
DE69913139D1 (de) Reaktor mit akoustischer kavitation
DE69714178D1 (de) Filteranordnung mit elastischen Oberflächenwellen
DE69525987D1 (de) Sender-Empfänger mit einem akustischen Wandler vom Ohrpassstück-Typ
DE69938777D1 (de) Laserkammer mit verringerten störungen durch akustische wellen und schockwellen
TR199501680A1 (tr) Gelistirilmis özellikleri olan emici ürünler.
DE69513904D1 (de) Akustische Oberflächenwellenanordnung
DE69909913D1 (de) Akustischer oberflächenwandler und filter mit reflektionsumkehrung
DE59712715D1 (de) Adaptives Filter
DE60029436D1 (de) Akusticher echokompensator
DE19882141T1 (de) Adaptive Doppelfilter-Echolöschung
DE69901426D1 (de) Resonatorfilter mit akustischen oberflächenwellen
DE69522066D1 (de) Akustische Oberflächenwellenanordnung
DE59507833D1 (de) Mit akustischen Oberflächenwellen arbeitendes Filter
DE60136042D1 (de) Akustisches Oberflächenwellenfilter und Kommunikationsvorrichtung mit demselben
DE69522065D1 (de) Akustische Oberflächenwellenanordnung
DE69933346D1 (de) Akustisches Filter mit zwei verschiedene Kanälen und Sperrkompensation
DE69833466T8 (de) Filteranordnung mit akustischen Oberflächenwellen und mehreren Durchlassbändern
DE59504186D1 (de) Mit akustischen Oberflächenwellen arbeitendes Filter
FI971677A0 (fi) Adaptiivinen tasain
DE69517110D1 (de) Akustische Oberflächenwellenanordnung und Kommunikationsanordnung damit
DE69730189D1 (de) Unidirektionales Filter mit akustischen Oberflächenwellen
FI962815A0 (fi) Duplex-filter

Legal Events

Date Code Title Description
8364 No opposition during term of opposition