FI971664A - Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin - Google Patents

Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin Download PDF

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Publication number
FI971664A
FI971664A FI971664A FI971664A FI971664A FI 971664 A FI971664 A FI 971664A FI 971664 A FI971664 A FI 971664A FI 971664 A FI971664 A FI 971664A FI 971664 A FI971664 A FI 971664A
Authority
FI
Finland
Prior art keywords
filter
background
echo
filters
main
Prior art date
Application number
FI971664A
Other languages
English (en)
Swedish (sv)
Other versions
FI104524B (fi
FI971664A0 (fi
Inventor
Jorma Maekinen
Antti Vaehaetalo
Original Assignee
Nokia Mobile Phones Ltd
Nokia Telecommunications 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 Mobile Phones Ltd, Nokia Telecommunications Oy filed Critical Nokia Mobile Phones Ltd
Priority to FI971664A priority Critical patent/FI104524B/fi
Publication of FI971664A0 publication Critical patent/FI971664A0/fi
Priority to US09/061,623 priority patent/US6163609A/en
Priority to AT98302979T priority patent/ATE343874T1/de
Priority to DE69836240T priority patent/DE69836240T2/de
Priority to EP98302979A priority patent/EP0872962B1/en
Priority to JP10988198A priority patent/JP3679245B2/ja
Publication of FI971664A publication Critical patent/FI971664A/fi
Application granted granted Critical
Publication of FI104524B publication Critical patent/FI104524B/fi

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

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)
FI971664A 1997-04-18 1997-04-18 Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin FI104524B (fi)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FI971664A FI104524B (fi) 1997-04-18 1997-04-18 Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin
US09/061,623 US6163609A (en) 1997-04-18 1998-04-16 System and method for echo cancelling and mobile communications device
AT98302979T ATE343874T1 (de) 1997-04-18 1998-04-17 Echounterdrückung unter verwendung von vordergrund- und hintergrundfiltern
DE69836240T DE69836240T2 (de) 1997-04-18 1998-04-17 Echounterdrückung unter Verwendung von Vordergrund- und Hintergrundfiltern
EP98302979A EP0872962B1 (en) 1997-04-18 1998-04-17 Echo cancelling using foreground and background filters
JP10988198A JP3679245B2 (ja) 1997-04-18 1998-04-20 エコー消去システム及び方法、並びに移動通信装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI971664 1997-04-18
FI971664A FI104524B (fi) 1997-04-18 1997-04-18 Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin

Publications (3)

Publication Number Publication Date
FI971664A0 FI971664A0 (fi) 1997-04-18
FI971664A true FI971664A (fi) 1998-10-19
FI104524B FI104524B (fi) 2000-02-15

Family

ID=8548674

Family Applications (1)

Application Number Title Priority Date Filing Date
FI971664A FI104524B (fi) 1997-04-18 1997-04-18 Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin

Country Status (6)

Country Link
US (1) US6163609A (fi)
EP (1) EP0872962B1 (fi)
JP (1) JP3679245B2 (fi)
AT (1) ATE343874T1 (fi)
DE (1) DE69836240T2 (fi)
FI (1) FI104524B (fi)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935808A1 (de) * 1999-07-29 2001-02-08 Ericsson Telefon Ab L M Echounterdrückungseinrichtung zum Unterdrücken von Echos in einer Sender/Empfänger-Einheit
US7068780B1 (en) * 2000-08-30 2006-06-27 Conexant, Inc. Hybrid echo canceller
US6999509B2 (en) 2001-08-08 2006-02-14 Octasic Inc. Method and apparatus for generating a set of filter coefficients for a time updated adaptive filter
US6957240B2 (en) 2001-08-08 2005-10-18 Octasic Inc. Method and apparatus for providing an error characterization estimate of an impulse response derived using least squares
US6970896B2 (en) 2001-08-08 2005-11-29 Octasic Inc. Method and apparatus for generating a set of filter coefficients
US6965640B2 (en) 2001-08-08 2005-11-15 Octasic Inc. Method and apparatus for generating a set of filter coefficients providing adaptive noise reduction
GB2389286A (en) * 2002-05-28 2003-12-03 Mitel Knowledge Corp Echo cancellation
US7242762B2 (en) 2002-06-24 2007-07-10 Freescale Semiconductor, Inc. Monitoring and control of an adaptive filter in a communication system
US7388954B2 (en) 2002-06-24 2008-06-17 Freescale Semiconductor, Inc. Method and apparatus for tone indication
US6961423B2 (en) * 2002-06-24 2005-11-01 Freescale Semiconductor, Inc. Method and apparatus for performing adaptive filtering
US7215765B2 (en) 2002-06-24 2007-05-08 Freescale Semiconductor, Inc. Method and apparatus for pure delay estimation in a communication system
GB2395878A (en) * 2002-11-29 2004-06-02 Mitel Knowledge Corp Method of capturing constant echo path information using default coefficients
US6947549B2 (en) * 2003-02-19 2005-09-20 The Hong Kong Polytechnic University Echo canceller
DE10329055B4 (de) * 2003-06-27 2005-10-13 Infineon Technologies Ag Verfahren und Vorrichtung zur Echokompensation
WO2005057804A1 (en) * 2003-12-10 2005-06-23 Koninklijke Philips Electronics N.V. Echo canceller having a series arrangement of adaptive filters with individual update control strategy
US7596220B2 (en) * 2004-12-30 2009-09-29 Alcatel Lucent Echo cancellation using adaptive IIR and FIR filters
US7536007B2 (en) * 2004-12-30 2009-05-19 Alcatel Lucent Echo cancellation using adaptive IIR and FIR filters
GB2427332B (en) * 2005-06-16 2007-05-16 Trinity Convergence Inc Systems and methods for adaptive echo cancellation
US8335311B2 (en) * 2005-07-28 2012-12-18 Kabushiki Kaisha Toshiba Communication apparatus capable of echo cancellation
US8014516B2 (en) * 2006-01-27 2011-09-06 Mediatek Inc. Method and apparatus for echo cancellation
US8437757B2 (en) * 2006-06-30 2013-05-07 Nokia Corporation Systems for providing peer-to-peer communications
US8170224B2 (en) * 2008-09-22 2012-05-01 Magor Communications Corporation Wideband speakerphone
JP5373473B2 (ja) * 2009-05-11 2013-12-18 株式会社エー・アール・アイ 音声抽出装置
SE533956C2 (sv) * 2009-07-20 2011-03-15 Limes Audio Ab Enhet och metod för styrning av restekodämpning
EP2512040B1 (en) * 2011-04-14 2013-11-13 Alcatel Lucent A computation saving echo canceller for a wide band audio signal
US9479650B1 (en) 2015-05-04 2016-10-25 Captioncall, Llc Methods and devices for updating filter coefficients during echo cancellation
KR102266780B1 (ko) * 2019-07-04 2021-06-18 한양대학교 산학협력단 음성 통신 환경에서 발생하는 클리핑 현상 완화 및 마이크 입력 신호, 에러 신호 및 원단 신호의 상관관계를 이용한 음성 왜곡 감소 업데이트 방법 및 장치
US20230051021A1 (en) * 2021-08-04 2023-02-16 Nokia Technologies Oy Apparatus, Methods and Computer Programs for Performing Acoustic Echo Cancellation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8423017D0 (en) * 1984-09-12 1984-10-17 Plessey Co Plc Echo canceller
AU4695485A (en) * 1984-09-21 1986-03-27 Alcatel N.V. Digital hybrid
US5307405A (en) * 1992-09-25 1994-04-26 Qualcomm Incorporated Network echo canceller
JP2538176B2 (ja) * 1993-05-28 1996-09-25 松下電器産業株式会社 エコ―制御装置
FI108830B (fi) * 1993-12-23 2002-03-28 Nokia Corp Menetelmä ja laite kaiun vaimentamiseksi puhelinlaitteessa
US5664011A (en) * 1995-08-25 1997-09-02 Lucent Technologies Inc. Echo canceller with adaptive and non-adaptive filters
SE505150C3 (sv) * 1995-10-18 1997-08-04 Ericsson Telefon Ab L M Adaptivt ekoslaeckningsfoerfarande av dubbelfiltertyp

Also Published As

Publication number Publication date
FI104524B (fi) 2000-02-15
US6163609A (en) 2000-12-19
DE69836240T2 (de) 2007-02-08
JP3679245B2 (ja) 2005-08-03
EP0872962B1 (en) 2006-10-25
ATE343874T1 (de) 2006-11-15
JPH10341190A (ja) 1998-12-22
DE69836240D1 (de) 2006-12-07
EP0872962A3 (en) 2004-12-08
EP0872962A2 (en) 1998-10-21
FI971664A0 (fi) 1997-04-18

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Owner name: 2011 INTELLECTUAL PROPERTY ASSET TRUST

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Owner name: CORE WIRELESS LICENSING S.A.R.L.

MM Patent lapsed