NO322301B1 - Fremgangsmate og system for ekkokansellering med liten forsinkelse. - Google Patents
Fremgangsmate og system for ekkokansellering med liten forsinkelse. Download PDFInfo
- Publication number
- NO322301B1 NO322301B1 NO20053393A NO20053393A NO322301B1 NO 322301 B1 NO322301 B1 NO 322301B1 NO 20053393 A NO20053393 A NO 20053393A NO 20053393 A NO20053393 A NO 20053393A NO 322301 B1 NO322301 B1 NO 322301B1
- Authority
- NO
- Norway
- Prior art keywords
- echo
- filter
- band
- subband
- full
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 33
- 238000003786 synthesis reaction Methods 0.000 claims description 33
- 230000005236 sound signal Effects 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 7
- 230000002238 attenuated effect Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 21
- 230000003044 adaptive effect Effects 0.000 description 9
- 230000004044 response Effects 0.000 description 9
- 230000006978 adaptation Effects 0.000 description 7
- 238000013459 approach Methods 0.000 description 7
- 238000005070 sampling Methods 0.000 description 7
- 238000007792 addition Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000002592 echocardiography Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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)
- Circuit For Audible Band Transducer (AREA)
- Telephone Function (AREA)
- Electrotherapy Devices (AREA)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO20053393A NO20053393A (no) | 2005-07-13 | 2005-07-13 | Fremgangsmåte og system for ekkokansellering med liten forsinkelse. |
| JP2008521343A JP4611423B2 (ja) | 2005-07-13 | 2006-07-12 | 低遅延エコーキャンセル動作用の方法とシステム |
| DE602006014836T DE602006014836D1 (de) | 2005-07-13 | 2006-07-12 | Verfahren und system zur echolöschung bei wenig verzögerung |
| EP06769444A EP1911258B1 (en) | 2005-07-13 | 2006-07-12 | Method and system for low delay echo cancelling |
| PCT/NO2006/000274 WO2007008086A1 (en) | 2005-07-13 | 2006-07-12 | Method and system for low delay echo cancelling |
| ES06769444T ES2345507T3 (es) | 2005-07-13 | 2006-07-12 | Procedimiento y sistema para cancelar eco de bajo retardo. |
| AT06769444T ATE471032T1 (de) | 2005-07-13 | 2006-07-12 | Verfahren und system zur echolöschung bei wenig verzögerung |
| CN200680025612XA CN101223767B (zh) | 2005-07-13 | 2006-07-12 | 低延迟的回声消除方法和系统 |
| US11/486,411 US7822194B2 (en) | 2005-07-13 | 2006-07-13 | Method and system for low delay echo cancelling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO20053393A NO20053393A (no) | 2005-07-13 | 2005-07-13 | Fremgangsmåte og system for ekkokansellering med liten forsinkelse. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO20053393D0 NO20053393D0 (no) | 2005-07-13 |
| NO322301B1 true NO322301B1 (no) | 2006-09-11 |
| NO20053393A NO20053393A (no) | 2006-09-11 |
Family
ID=35295172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO20053393A NO20053393A (no) | 2005-07-13 | 2005-07-13 | Fremgangsmåte og system for ekkokansellering med liten forsinkelse. |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7822194B2 (es) |
| EP (1) | EP1911258B1 (es) |
| JP (1) | JP4611423B2 (es) |
| CN (1) | CN101223767B (es) |
| AT (1) | ATE471032T1 (es) |
| DE (1) | DE602006014836D1 (es) |
| ES (1) | ES2345507T3 (es) |
| NO (1) | NO20053393A (es) |
| WO (1) | WO2007008086A1 (es) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8457614B2 (en) | 2005-04-07 | 2013-06-04 | Clearone Communications, Inc. | Wireless multi-unit conference phone |
| CN101227537B (zh) * | 2007-01-19 | 2010-12-01 | 中兴通讯股份有限公司 | 一种宽带声学回声消除方法 |
| US8285554B2 (en) * | 2007-07-27 | 2012-10-09 | Dsp Group Limited | Method and system for dynamic aliasing suppression |
| 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 |
| CN101222555B (zh) * | 2008-01-25 | 2010-06-02 | 上海华平信息技术股份有限公司 | 改善音频通话质量的系统及方法 |
| US9124769B2 (en) | 2008-10-31 | 2015-09-01 | The Nielsen Company (Us), Llc | Methods and apparatus to verify presentation of media content |
| CN101562669B (zh) * | 2009-03-11 | 2012-10-03 | 上海朗谷电子科技有限公司 | 自适应全双工全频段回声消除的方法 |
| JP5424936B2 (ja) * | 2010-02-24 | 2014-02-26 | パナソニック株式会社 | 通信端末及び通信方法 |
| EP2444967A1 (en) * | 2010-10-25 | 2012-04-25 | Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. | Echo suppression comprising modeling of late reverberation components |
| CN103780998B (zh) * | 2012-10-23 | 2018-06-01 | 韩国电子通信研究院 | 消除声学回波的方法和设备、与自适应滤波系数更新方法 |
| WO2014184866A1 (ja) * | 2013-05-14 | 2014-11-20 | 三菱電機株式会社 | エコー消去装置 |
| JP6243536B2 (ja) | 2013-12-12 | 2017-12-06 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | エコー打ち消し |
| GB2519392B (en) * | 2014-04-02 | 2016-02-24 | Imagination Tech Ltd | Auto-tuning of an acoustic echo canceller |
| US9947337B1 (en) * | 2017-03-21 | 2018-04-17 | Omnivision Technologies, Inc. | Echo cancellation system and method with reduced residual echo |
| KR20220079628A (ko) * | 2019-11-12 | 2022-06-13 | 니폰 덴신 덴와 가부시끼가이샤 | 수신 장치 |
| CN111988708A (zh) * | 2020-09-03 | 2020-11-24 | 昆腾微电子股份有限公司 | 一种基于单麦克风的啸叫抑制方法及装置 |
| CN113079419A (zh) * | 2021-03-30 | 2021-07-06 | 北京字跳网络技术有限公司 | 应用程序的视频处理方法和电子设备 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE461308B (sv) * | 1988-06-03 | 1990-01-29 | Ericsson Telefon Ab L M | Adaptivt digitalt filter omfattande en icke rekursiv del och en rekursiv del |
| JPH03243020A (ja) * | 1990-02-21 | 1991-10-30 | Fujitsu Ltd | サブバンド型エコーキャンセラ |
| US5610909A (en) * | 1995-05-31 | 1997-03-11 | Lucent Technologies Inc. | Multistage echo canceler including time variation compensation |
| JP3199155B2 (ja) * | 1995-10-18 | 2001-08-13 | 日本電信電話株式会社 | 反響消去装置 |
| KR100330237B1 (ko) * | 1999-07-19 | 2002-03-25 | 윤종용 | 반향 지연 추정 장치 및 방법 |
| DE10012868C1 (de) * | 2000-03-16 | 2001-07-26 | Siemens Ag | Rechnergerät mit Mehrwege-Akustikaus- und -eingabesystem |
| US8879432B2 (en) * | 2002-09-27 | 2014-11-04 | Broadcom Corporation | Splitter and combiner for multiple data rate communication system |
| US6947549B2 (en) * | 2003-02-19 | 2005-09-20 | The Hong Kong Polytechnic University | Echo canceller |
| NO320942B1 (no) * | 2003-12-23 | 2006-02-13 | Tandberg Telecom As | System og fremgangsmate for forbedret stereolyd |
-
2005
- 2005-07-13 NO NO20053393A patent/NO20053393A/no not_active IP Right Cessation
-
2006
- 2006-07-12 CN CN200680025612XA patent/CN101223767B/zh not_active Expired - Fee Related
- 2006-07-12 WO PCT/NO2006/000274 patent/WO2007008086A1/en active Application Filing
- 2006-07-12 ES ES06769444T patent/ES2345507T3/es active Active
- 2006-07-12 EP EP06769444A patent/EP1911258B1/en not_active Not-in-force
- 2006-07-12 AT AT06769444T patent/ATE471032T1/de not_active IP Right Cessation
- 2006-07-12 JP JP2008521343A patent/JP4611423B2/ja not_active Expired - Fee Related
- 2006-07-12 DE DE602006014836T patent/DE602006014836D1/de active Active
- 2006-07-13 US US11/486,411 patent/US7822194B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1911258A1 (en) | 2008-04-16 |
| EP1911258B1 (en) | 2010-06-09 |
| CN101223767B (zh) | 2012-05-23 |
| CN101223767A (zh) | 2008-07-16 |
| NO20053393D0 (no) | 2005-07-13 |
| WO2007008086A1 (en) | 2007-01-18 |
| JP2009501486A (ja) | 2009-01-15 |
| US7822194B2 (en) | 2010-10-26 |
| DE602006014836D1 (de) | 2010-07-22 |
| US20070071254A1 (en) | 2007-03-29 |
| ATE471032T1 (de) | 2010-06-15 |
| JP4611423B2 (ja) | 2011-01-12 |
| NO20053393A (no) | 2006-09-11 |
| ES2345507T3 (es) | 2010-09-24 |
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Legal Events
| Date | Code | Title | Description |
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| CREP | Change of representative |
Representative=s name: ONSAGERS AS, POSTBOKS 6963 ST OLAVS PLASS, 0130 OS |
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| MM1K | Lapsed by not paying the annual fees |