ATE203360T1 - Verfahren zur bestimmung der echolage in einem echokompensator - Google Patents

Verfahren zur bestimmung der echolage in einem echokompensator

Info

Publication number
ATE203360T1
ATE203360T1 AT95903826T AT95903826T ATE203360T1 AT E203360 T1 ATE203360 T1 AT E203360T1 AT 95903826 T AT95903826 T AT 95903826T AT 95903826 T AT95903826 T AT 95903826T AT E203360 T1 ATE203360 T1 AT E203360T1
Authority
AT
Austria
Prior art keywords
echo
location
pct
path
echo path
Prior art date
Application number
AT95903826T
Other languages
English (en)
Inventor
Antti Vaehaetalo
Jorma Maekinen
Original Assignee
Nokia Networks Oy
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 Nokia Networks Oy filed Critical Nokia Networks Oy
Application granted granted Critical
Publication of ATE203360T1 publication Critical patent/ATE203360T1/de

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

Landscapes

  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Telephone Function (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Circuit For Audible Band Transducer (AREA)
AT95903826T 1993-12-23 1994-12-21 Verfahren zur bestimmung der echolage in einem echokompensator ATE203360T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI935834A FI935834A7 (fi) 1993-12-23 1993-12-23 Menetelmä kaikukohtaan sovittautumiseksi kaiunpoistajassa
PCT/FI1994/000577 WO1995017784A1 (en) 1993-12-23 1994-12-21 Method for determining the location of echo in an echo cancellar

Publications (1)

Publication Number Publication Date
ATE203360T1 true ATE203360T1 (de) 2001-08-15

Family

ID=8539171

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95903826T ATE203360T1 (de) 1993-12-23 1994-12-21 Verfahren zur bestimmung der echolage in einem echokompensator

Country Status (9)

Country Link
US (1) US5737410A (de)
EP (1) EP0736235B1 (de)
JP (2) JPH09507120A (de)
CN (1) CN1068742C (de)
AT (1) ATE203360T1 (de)
AU (1) AU680981B2 (de)
DE (1) DE69427770T2 (de)
FI (1) FI935834A7 (de)
WO (1) WO1995017784A1 (de)

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US7164659B2 (en) * 1999-12-09 2007-01-16 Broadcom Corporation Adaptive gain control based on echo canceller performance information
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US6700978B2 (en) * 2000-09-08 2004-03-02 Intel Corporation Method and apparatus for fast converging affine projection based echo canceller
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US6768796B2 (en) * 2001-02-05 2004-07-27 3Com Corporation System and method for echo cancellation
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US7043014B2 (en) * 2002-05-22 2006-05-09 Avaya Technology Corp. Apparatus and method for time-alignment of two signals
US7027593B2 (en) * 2002-05-22 2006-04-11 Avaya Technology Corp. Apparatus and method for echo control
DE60333994D1 (de) * 2002-05-23 2010-10-14 Analog Devices Inc Zeitverzögerungsschätzung für die entzerrung
US7242762B2 (en) * 2002-06-24 2007-07-10 Freescale Semiconductor, Inc. Monitoring and control of an adaptive filter in a communication system
US7215765B2 (en) * 2002-06-24 2007-05-08 Freescale Semiconductor, Inc. Method and apparatus for pure delay estimation in a communication system
US6961423B2 (en) 2002-06-24 2005-11-01 Freescale Semiconductor, Inc. Method and apparatus for performing adaptive filtering
US7388954B2 (en) * 2002-06-24 2008-06-17 Freescale Semiconductor, Inc. Method and apparatus for tone indication
CN100452929C (zh) * 2002-11-29 2009-01-14 Tcl王牌电子(深圳)有限公司 以回声抵消测量非消声室扬声器方法
US20040252652A1 (en) * 2003-06-10 2004-12-16 Alexander Berestesky Cross correlation, bulk delay estimation, and echo cancellation
WO2005074156A1 (en) * 2004-01-29 2005-08-11 Koninklijke Philips Electronics N.V. Echo canceller with interference-level controlled step size
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US8457614B2 (en) * 2005-04-07 2013-06-04 Clearone Communications, Inc. Wireless multi-unit conference phone
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US8050398B1 (en) 2007-10-31 2011-11-01 Clearone Communications, Inc. Adaptive conferencing pod sidetone compensator connecting to a telephonic device having intermittent sidetone
US8199927B1 (en) 2007-10-31 2012-06-12 ClearOnce Communications, Inc. Conferencing system implementing echo cancellation and push-to-talk microphone detection using two-stage frequency filter
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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
US8917891B2 (en) 2010-04-13 2014-12-23 Starkey Laboratories, Inc. Methods and apparatus for allocating feedback cancellation resources for hearing assistance devices
US9654885B2 (en) 2010-04-13 2017-05-16 Starkey Laboratories, Inc. Methods and apparatus for allocating feedback cancellation resources for hearing assistance devices
US8942398B2 (en) 2010-04-13 2015-01-27 Starkey Laboratories, Inc. Methods and apparatus for early audio feedback cancellation for hearing assistance devices
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KR20150002784A (ko) * 2012-06-08 2015-01-07 인텔 코포레이션 장기 지연된 에코에 대한 에코 소거 알고리즘
CN109920444B (zh) * 2017-12-13 2021-04-27 中国电信股份有限公司 回声时延的检测方法、装置以及计算机可读存储介质
CN110610716A (zh) * 2019-09-26 2019-12-24 北京声智科技有限公司 回声消除方法、装置及存储介质

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Also Published As

Publication number Publication date
US5737410A (en) 1998-04-07
DE69427770D1 (de) 2001-08-23
AU1274895A (en) 1995-07-10
CN1068742C (zh) 2001-07-18
FI935834A0 (fi) 1993-12-23
EP0736235A1 (de) 1996-10-09
DE69427770T2 (de) 2002-05-23
FI935834L (fi) 1995-06-24
JP2006191650A (ja) 2006-07-20
EP0736235B1 (de) 2001-07-18
CN1139501A (zh) 1997-01-01
JPH09507120A (ja) 1997-07-15
FI935834A7 (fi) 1995-06-24
WO1995017784A1 (en) 1995-06-29
AU680981B2 (en) 1997-08-14
HK1011472A1 (en) 1999-07-09

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