FI971664A - Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin - Google Patents
Kaiunpoistojärjestelmä ja -menetelmä sekä matkaviestin Download PDFInfo
- 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
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)
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)
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)
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 |
-
1997
- 1997-04-18 FI FI971664A patent/FI104524B/fi not_active IP Right Cessation
-
1998
- 1998-04-16 US US09/061,623 patent/US6163609A/en not_active Expired - Lifetime
- 1998-04-17 DE DE69836240T patent/DE69836240T2/de not_active Expired - Lifetime
- 1998-04-17 AT AT98302979T patent/ATE343874T1/de not_active IP Right Cessation
- 1998-04-17 EP EP98302979A patent/EP0872962B1/en not_active Expired - Lifetime
- 1998-04-20 JP JP10988198A patent/JP3679245B2/ja not_active Expired - Fee Related
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC | Transfer of assignment of patent |
Owner name: 2011 INTELLECTUAL PROPERTY ASSET TRUST |
|
PC | Transfer of assignment of patent |
Owner name: CORE WIRELESS LICENSING S.A.R.L. |
|
MM | Patent lapsed |