CN1813418B - 稀疏回声对消器 - Google Patents

稀疏回声对消器 Download PDF

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Publication number
CN1813418B
CN1813418B CN2004800183187A CN200480018318A CN1813418B CN 1813418 B CN1813418 B CN 1813418B CN 2004800183187 A CN2004800183187 A CN 2004800183187A CN 200480018318 A CN200480018318 A CN 200480018318A CN 1813418 B CN1813418 B CN 1813418B
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CN
China
Prior art keywords
filter
sequence
signal
taps
time delay
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 - Fee Related
Application number
CN2004800183187A
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English (en)
Chinese (zh)
Other versions
CN1813418A (zh
Inventor
F·里斯
J·卡布洛特斯基
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Analog Devices Inc
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Analog Devices Inc
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Publication date
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Publication of CN1813418A publication Critical patent/CN1813418A/zh
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Publication of CN1813418B publication Critical patent/CN1813418B/zh
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    • 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
    • H04B3/237—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 using two adaptive filters, e.g. for near end and for end echo cancelling
    • 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
    • H04B3/238—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 using initial training sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Interface Circuits In Exchanges (AREA)
CN2004800183187A 2003-05-23 2004-05-20 稀疏回声对消器 Expired - Fee Related CN1813418B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/444,265 US7107303B2 (en) 2002-05-23 2003-05-23 Sparse echo canceller
US10/444,265 2003-05-23
PCT/US2004/015766 WO2004114541A2 (en) 2003-05-23 2004-05-20 Sparse echo canceller

Publications (2)

Publication Number Publication Date
CN1813418A CN1813418A (zh) 2006-08-02
CN1813418B true CN1813418B (zh) 2010-12-08

Family

ID=33538941

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2004800183187A Expired - Fee Related CN1813418B (zh) 2003-05-23 2004-05-20 稀疏回声对消器

Country Status (5)

Country Link
US (1) US7107303B2 (enExample)
EP (1) EP1636914B1 (enExample)
JP (1) JP4538460B2 (enExample)
CN (1) CN1813418B (enExample)
WO (1) WO2004114541A2 (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7069286B2 (en) * 2002-09-27 2006-06-27 Lucent Technologies Inc. Solution space principle component-based adaptive filter and method of operation thereof
US20070189505A1 (en) * 2006-01-31 2007-08-16 Freescale Semiconductor, Inc. Detecting reflections in a communication channel
US7779692B2 (en) * 2006-05-17 2010-08-24 The Board Of Regents Of The University Of Texas System Method for estimating strain, strain ratios and displacements in a target body
JP4743085B2 (ja) * 2006-11-08 2011-08-10 沖電気工業株式会社 エコーキャンセラ
KR100995990B1 (ko) * 2007-12-07 2010-11-22 삼성전자주식회사 통신 시스템의 신호 송수신 장치에서 반향 신호 제거 장치 및 방법
TW201010311A (en) * 2008-08-20 2010-03-01 Ic Plus Corp Echo canceller and echo cancellation method
US8452002B2 (en) * 2009-09-18 2013-05-28 At&T Intellectual Property I, L.P. Methods, apparatus and articles of manufacture to cancel echo for communication paths having long bulk delays
RU2011107596A (ru) * 2011-02-17 2012-08-27 Общество с ограниченной ответственностью "Айффорт Интернешнл" (RU) Способ лечения аллергических заболеваний
CN107026650B (zh) * 2016-01-29 2020-10-09 华为技术有限公司 一种模拟低通滤波器、模拟信息转换器以及滤波方法
US10594530B2 (en) * 2018-05-29 2020-03-17 Qualcomm Incorporated Techniques for successive peak reduction crest factor reduction

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343522A (en) * 1992-02-05 1994-08-30 Northern Telecom Limited Adaptive sparse echo canceller using a sub-rate filter for active tap selection
CN1239608A (zh) * 1996-10-01 1999-12-22 艾利森电话股份有限公司 带有无声段检测的回声消除器

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221221B1 (en) * 1985-10-30 1991-12-27 International Business Machines Corporation A process for determining an echo path flat delay and echo canceler using said process
US4789994A (en) * 1987-08-12 1988-12-06 American Telephone And Telegraph Company, At&T Bell Laboratories Adaptive equalizer using precursor error signal for convergence control
CA2058495C (en) * 1990-12-27 1996-02-06 Akihiko Sugiyama Adaptive filter capable of quickly identifying an unknown system
JPH0514244A (ja) * 1991-07-05 1993-01-22 Fujitsu Ltd エコーキヤンセラ装置
JPH05152999A (ja) * 1991-11-29 1993-06-18 Nec Corp エコー消去装置
US5402496A (en) * 1992-07-13 1995-03-28 Minnesota Mining And Manufacturing Company Auditory prosthesis, noise suppression apparatus and feedback suppression apparatus having focused adaptive filtering
US5539774A (en) * 1994-06-15 1996-07-23 International Business Machines Corporation Dual decision equalization method and device
US5572262A (en) * 1994-12-29 1996-11-05 Philips Electronics North America Corporation Receiver based methods and devices for combating co-channel NTSC interference in digital transmission
US5610909A (en) * 1995-05-31 1997-03-11 Lucent Technologies Inc. Multistage echo canceler including time variation compensation
JP3241328B2 (ja) * 1998-09-30 2001-12-25 沖電気工業株式会社 エコーキャンセラ
JP2000183962A (ja) * 1998-12-14 2000-06-30 Fujitsu Ltd 音声会話装置及び方法
US6909782B2 (en) * 2000-09-08 2005-06-21 Intel Corporation Fast converging affine projection based echo canceller for sparse multi-path channels
US7388954B2 (en) * 2002-06-24 2008-06-17 Freescale Semiconductor, Inc. Method and apparatus for tone indication

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343522A (en) * 1992-02-05 1994-08-30 Northern Telecom Limited Adaptive sparse echo canceller using a sub-rate filter for active tap selection
CN1239608A (zh) * 1996-10-01 1999-12-22 艾利森电话股份有限公司 带有无声段检测的回声消除器

Also Published As

Publication number Publication date
CN1813418A (zh) 2006-08-02
WO2004114541A3 (en) 2005-03-24
JP4538460B2 (ja) 2010-09-08
US20040260738A1 (en) 2004-12-23
WO2004114541A2 (en) 2004-12-29
EP1636914B1 (en) 2012-07-04
JP2007503795A (ja) 2007-02-22
EP1636914A2 (en) 2006-03-22
US7107303B2 (en) 2006-09-12

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Granted publication date: 20101208

Termination date: 20170520

CF01 Termination of patent right due to non-payment of annual fee