ATE421836T1 - Verfahren und gerät zur verbesserung von adaptiver teilbandfilterung in echokompensationssystemen - Google Patents

Verfahren und gerät zur verbesserung von adaptiver teilbandfilterung in echokompensationssystemen

Info

Publication number
ATE421836T1
ATE421836T1 AT00954412T AT00954412T ATE421836T1 AT E421836 T1 ATE421836 T1 AT E421836T1 AT 00954412 T AT00954412 T AT 00954412T AT 00954412 T AT00954412 T AT 00954412T AT E421836 T1 ATE421836 T1 AT E421836T1
Authority
AT
Austria
Prior art keywords
bandwidth
sub
band
filters
analysis
Prior art date
Application number
AT00954412T
Other languages
English (en)
Inventor
Patrik Grundstroem
Fredrik Ehrenstraale
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
Application granted granted Critical
Publication of ATE421836T1 publication Critical patent/ATE421836T1/de

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)
AT00954412T 1999-06-03 2000-05-29 Verfahren und gerät zur verbesserung von adaptiver teilbandfilterung in echokompensationssystemen ATE421836T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/324,851 US6628781B1 (en) 1999-06-03 1999-06-03 Methods and apparatus for improved sub-band adaptive filtering in echo cancellation systems

Publications (1)

Publication Number Publication Date
ATE421836T1 true ATE421836T1 (de) 2009-02-15

Family

ID=23265381

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00954412T ATE421836T1 (de) 1999-06-03 2000-05-29 Verfahren und gerät zur verbesserung von adaptiver teilbandfilterung in echokompensationssystemen

Country Status (12)

Country Link
US (1) US6628781B1 (de)
EP (1) EP1186158B1 (de)
JP (1) JP2003501937A (de)
CN (1) CN1223166C (de)
AT (1) ATE421836T1 (de)
AU (1) AU6687600A (de)
DE (1) DE60041445D1 (de)
HK (1) HK1049081B (de)
IL (1) IL146689A0 (de)
MX (1) MXPA01012349A (de)
TR (1) TR200103470T2 (de)
WO (1) WO2000076081A2 (de)

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US6968064B1 (en) * 2000-09-29 2005-11-22 Forgent Networks, Inc. Adaptive thresholds in acoustic echo canceller for use during double talk
SE0101175D0 (sv) 2001-04-02 2001-04-02 Coding Technologies Sweden Ab Aliasing reduction using complex-exponential-modulated filterbanks
JP3571013B2 (ja) * 2001-08-23 2004-09-29 エルピーダメモリ株式会社 半導体装置、その駆動方法及びその設定方法
FR2834563B1 (fr) * 2002-01-08 2004-04-02 Thales Sa Procede de suppression de signaux radioelectriques pulses et dispositif de mise en oeuvre du procede
US7089371B2 (en) * 2002-02-12 2006-08-08 Ip-First, Llc Microprocessor apparatus and method for prefetch, allocation, and initialization of a block of cache lines from memory
US6792057B2 (en) * 2002-08-29 2004-09-14 Bae Systems Information And Electronic Systems Integration Inc Partial band reconstruction of frequency channelized filters
WO2005057784A1 (ja) * 2003-12-12 2005-06-23 Neuro Solution Corp. デジタルフィルタの設計方法および設計装置
US7949520B2 (en) 2004-10-26 2011-05-24 QNX Software Sytems Co. Adaptive filter pitch extraction
US8306821B2 (en) * 2004-10-26 2012-11-06 Qnx Software Systems Limited Sub-band periodic signal enhancement system
US8170879B2 (en) * 2004-10-26 2012-05-01 Qnx Software Systems Limited Periodic signal enhancement system
US8543390B2 (en) 2004-10-26 2013-09-24 Qnx Software Systems Limited Multi-channel periodic signal enhancement system
US7532667B2 (en) * 2004-11-05 2009-05-12 Interdigital Technology Corporation Pilot-directed and pilot/data-directed equalizers
US7453944B2 (en) * 2004-12-21 2008-11-18 Tyco Electronics Corporation Multi-mode signal modification circuit with common mode bypass
US7346014B2 (en) * 2005-10-28 2008-03-18 Sasken Communication Technologies Ltd System and method for echo cancellation
US7304597B1 (en) * 2006-05-26 2007-12-04 Lecroy Corporation Adaptive interpolation for use in reducing signal spurs
US8155304B2 (en) * 2007-04-10 2012-04-10 Microsoft Corporation Filter bank optimization for acoustic echo cancellation
US8285554B2 (en) * 2007-07-27 2012-10-09 Dsp Group Limited Method and system for dynamic aliasing suppression
US8850154B2 (en) 2007-09-11 2014-09-30 2236008 Ontario Inc. Processing system having memory partitioning
US8904400B2 (en) 2007-09-11 2014-12-02 2236008 Ontario Inc. Processing system having a partitioning component for resource partitioning
US8694310B2 (en) 2007-09-17 2014-04-08 Qnx Software Systems Limited Remote control server protocol system
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
US8923509B2 (en) * 2007-10-23 2014-12-30 Cisco Technology, Inc. Controlling echo in a wideband voice conference
US8209514B2 (en) 2008-02-04 2012-06-26 Qnx Software Systems Limited Media processing system having resource partitioning
US8170226B2 (en) * 2008-06-20 2012-05-01 Microsoft Corporation Acoustic echo cancellation and adaptive filters
WO2013160945A1 (ja) * 2012-04-25 2013-10-31 三菱電機株式会社 エコー消去装置
GB201509209D0 (en) * 2015-05-28 2015-07-15 Micromass Ltd Echo cancellation for time of flight analogue to digital converter
US10477313B2 (en) * 2015-09-22 2019-11-12 Koninklijke Philips N.V. Audio signal processing
EP3563561B1 (de) * 2016-12-30 2025-04-02 Harman Becker Automotive Systems GmbH Unterdrückung von akustischem echo
CN111128218B (zh) * 2019-12-31 2022-09-20 恒玄科技(上海)股份有限公司 一种回声消除方法及装置
CN114488151B (zh) * 2022-04-08 2022-06-24 中国科学院空天信息创新研究院 针对观测船只的主被动联合探测方法、装置及设备和介质

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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
CA2036078C (en) 1990-02-21 1994-07-26 Fumio Amano Sub-band acoustic echo canceller
US5436940A (en) 1992-06-11 1995-07-25 Massachusetts Institute Of Technology Quadrature mirror filter banks and method
FR2697704B1 (fr) 1992-10-29 1995-01-06 France Telecom Procédé et dispositif de segmentation en sous-bandes et de reconstruction d'un signal numérique, et dispositif correspondant.
US5553014A (en) * 1994-10-31 1996-09-03 Lucent Technologies Inc. Adaptive finite impulse response filtering method and apparatus
US5566167A (en) * 1995-01-04 1996-10-15 Lucent Technologies Inc. Subband echo canceler
FR2731855B1 (fr) 1995-03-16 1997-05-30 Telediffusion Fse Procede inversible de decomposition complexe en frequence d'un signal numerique et son application a un dispositif de reduction du flux d'informations de signaux audionumeriques

Also Published As

Publication number Publication date
EP1186158B1 (de) 2009-01-21
HK1049081A1 (en) 2003-04-25
TR200103470T2 (tr) 2002-04-22
HK1049081B (zh) 2006-07-07
US6628781B1 (en) 2003-09-30
CN1223166C (zh) 2005-10-12
AU6687600A (en) 2000-12-28
EP1186158A2 (de) 2002-03-13
JP2003501937A (ja) 2003-01-14
WO2000076081A2 (en) 2000-12-14
IL146689A0 (en) 2002-07-25
MXPA01012349A (es) 2002-07-22
WO2000076081A3 (en) 2001-08-09
CN1367977A (zh) 2002-09-04
DE60041445D1 (de) 2009-03-12

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