BR0010965A - Dispositivos de processamento de sinal, e de comunicações para prover comunicações bidirecionais entre um usuário de extremidade próxima e um usuário de extremidade distante, e, método para preparar um filtro adaptável - Google Patents

Dispositivos de processamento de sinal, e de comunicações para prover comunicações bidirecionais entre um usuário de extremidade próxima e um usuário de extremidade distante, e, método para preparar um filtro adaptável

Info

Publication number
BR0010965A
BR0010965A BR0010965-7A BR0010965A BR0010965A BR 0010965 A BR0010965 A BR 0010965A BR 0010965 A BR0010965 A BR 0010965A BR 0010965 A BR0010965 A BR 0010965A
Authority
BR
Brazil
Prior art keywords
end user
communications
preparing
signal processing
signals
Prior art date
Application number
BR0010965-7A
Other languages
English (en)
Portuguese (pt)
Inventor
Jim Rasmusson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR0010965A publication Critical patent/BR0010965A/pt

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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Telephone Function (AREA)
BR0010965-7A 1999-05-27 2000-05-23 Dispositivos de processamento de sinal, e de comunicações para prover comunicações bidirecionais entre um usuário de extremidade próxima e um usuário de extremidade distante, e, método para preparar um filtro adaptável BR0010965A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/320,659 US7062039B1 (en) 1999-05-27 1999-05-27 Methods and apparatus for improving adaptive filter performance by inclusion of inaudible information
PCT/EP2000/004666 WO2000074362A2 (en) 1999-05-27 2000-05-23 Methods and apparatus for improving adaptive filter performance by inclusion of inaudible information

Publications (1)

Publication Number Publication Date
BR0010965A true BR0010965A (pt) 2002-03-19

Family

ID=23247373

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0010965-7A BR0010965A (pt) 1999-05-27 2000-05-23 Dispositivos de processamento de sinal, e de comunicações para prover comunicações bidirecionais entre um usuário de extremidade próxima e um usuário de extremidade distante, e, método para preparar um filtro adaptável

Country Status (13)

Country Link
US (1) US7062039B1 (enExample)
EP (1) EP1210814B1 (enExample)
JP (1) JP2003501894A (enExample)
KR (1) KR100633213B1 (enExample)
CN (1) CN1201553C (enExample)
AT (1) ATE336856T1 (enExample)
AU (1) AU5396500A (enExample)
BR (1) BR0010965A (enExample)
DE (1) DE60030137T2 (enExample)
HK (1) HK1047665B (enExample)
IL (2) IL146509A0 (enExample)
MY (1) MY125940A (enExample)
WO (1) WO2000074362A2 (enExample)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6771769B2 (en) * 2000-12-28 2004-08-03 Richard Henry Erving Method and apparatus for active reduction of speakerphone singing
KR100377549B1 (ko) * 2001-04-30 2003-03-26 현대네트웍스 주식회사 선형 변환을 이용한 적응 반향 제거 장치
CA2357200C (en) * 2001-09-07 2010-05-04 Dspfactory Ltd. Listening device
JP3568922B2 (ja) * 2001-09-20 2004-09-22 三菱電機株式会社 エコー処理装置
WO2004008731A1 (en) * 2002-07-16 2004-01-22 Koninklijke Philips Electronics N.V. Echo canceller with model mismatch compensation
DE10329055B4 (de) * 2003-06-27 2005-10-13 Infineon Technologies Ag Verfahren und Vorrichtung zur Echokompensation
US7764634B2 (en) * 2005-12-29 2010-07-27 Microsoft Corporation Suppression of acoustic feedback in voice communications
US8396206B2 (en) * 2007-02-15 2013-03-12 Infineon Technologies Ag Multi-channel communication device and methods for reducing echoes by inserting a training sequence under a spectral mask
US8213597B2 (en) * 2007-02-15 2012-07-03 Infineon Technologies Ag Audio communication device and methods for reducing echoes by inserting a training sequence under a spectral mask
US20100119075A1 (en) * 2008-11-10 2010-05-13 Rensselaer Polytechnic Institute Spatially enveloping reverberation in sound fixing, processing, and room-acoustic simulations using coded sequences
FR2952263B1 (fr) * 2009-10-29 2012-01-06 Univ Paris Descartes Procede et dispositif d'annulation d'echo acoustique par tatouage audio
US20120066162A1 (en) * 2010-09-09 2012-03-15 Texas Instruments Incorporated System and Method for Training an Adaptive Filter in an Alternate Domain with Constraints
CN103516921A (zh) 2012-06-28 2014-01-15 杜比实验室特许公司 通过隐藏音频信号的回声控制
US9065971B2 (en) * 2012-12-19 2015-06-23 Microsoft Technology Licensing, Llc Video and audio tagging for active speaker detection
CN108836321A (zh) * 2018-05-03 2018-11-20 江苏师范大学 一种基于自适应噪声消除系统的脑电信号预处理方法
CN111031448B (zh) * 2019-11-12 2021-09-17 西安讯飞超脑信息科技有限公司 回声消除方法、装置、电子设备和存储介质
US12462782B2 (en) * 2021-06-25 2025-11-04 Nureva, Inc. System for dynamically adjusting a soundmask signal based on realtime ambient noise parameters while maintaining echo canceller calibration performance

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528643A1 (fr) * 1982-06-14 1983-12-16 Trt Telecom Radio Electr Procede destine a reduire le temps de convergence d'un annuleur d'echo et dispositif utilise pour mettre en oeuvre ce procede
JPS6181035A (ja) * 1984-09-28 1986-04-24 Fujitsu Ltd エコ−キヤンセル方式
JPS62245850A (ja) 1986-04-18 1987-10-27 Toshiba Electric Equip Corp 交替通話式拡声子機の受話保持方法
JPS63312757A (ja) 1987-06-15 1988-12-21 Nec Corp ハンズフリ−通話装置
JP2533353B2 (ja) * 1988-02-26 1996-09-11 日本電信電話株式会社 反響消去装置
US4969144A (en) 1989-01-03 1990-11-06 Universal Data Systems, Inc. Adaptive passband echo canceller
JPH02305155A (ja) 1989-05-19 1990-12-18 Nec Corp ハンドフリー自動車電話機
EP0601082A4 (en) 1991-08-30 1996-05-15 Digital Sound Corp Adaptive echo canceller for voice messaging system.
JPH05244464A (ja) 1992-02-26 1993-09-21 Toshiba Corp 波形等化器
JP3402483B2 (ja) * 1993-01-29 2003-05-06 ソニー株式会社 オーディオ信号符号化装置
JP3212796B2 (ja) * 1994-05-07 2001-09-25 株式会社エヌ・ティ・ティ・ドコモ エコーキャンセラ
KR100233077B1 (ko) * 1994-05-06 1999-12-01 다치카와 게이지 반향소거장치
CN1558563B (zh) 1994-05-07 2011-04-20 株式会社Ntt都科摩 回波消除器及其所使用的学习方法
DE19629132A1 (de) 1996-07-19 1998-01-22 Daimler Benz Ag Verfahren zur Verringerung von Störungen eines Sprachsignals
FR2762467B1 (fr) 1997-04-16 1999-07-02 France Telecom Procede d'annulation d'echo acoustique multi-voies et annuleur d'echo acoustique multi-voies

Also Published As

Publication number Publication date
DE60030137D1 (de) 2006-09-28
IL146509A0 (en) 2002-07-25
WO2000074362A2 (en) 2000-12-07
EP1210814B1 (en) 2006-08-16
AU5396500A (en) 2000-12-18
HK1047665A1 (en) 2003-02-28
DE60030137T2 (de) 2007-07-05
KR100633213B1 (ko) 2006-10-11
JP2003501894A (ja) 2003-01-14
MY125940A (en) 2006-09-29
US7062039B1 (en) 2006-06-13
EP1210814A2 (en) 2002-06-05
CN1201553C (zh) 2005-05-11
KR20020020713A (ko) 2002-03-15
WO2000074362A3 (en) 2002-03-28
HK1047665B (zh) 2005-12-30
CN1367976A (zh) 2002-09-04
IL146509A (en) 2006-08-20
ATE336856T1 (de) 2006-09-15

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8O ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 DA RPI 2008 DE 30/06/2009.