CN101826891B - 增强回波消除 - Google Patents
增强回波消除 Download PDFInfo
- Publication number
- CN101826891B CN101826891B CN200910208648.7A CN200910208648A CN101826891B CN 101826891 B CN101826891 B CN 101826891B CN 200910208648 A CN200910208648 A CN 200910208648A CN 101826891 B CN101826891 B CN 101826891B
- Authority
- CN
- China
- Prior art keywords
- signal
- near end
- echo
- end signal
- residual echo
- 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
Links
Images
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
-
- 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
- H04B3/234—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 double talk detection
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)
Abstract
Description
Claims (25)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/258,723 | 2008-10-27 | ||
US12/258723 | 2008-10-27 | ||
US12/258,723 US8320553B2 (en) | 2008-10-27 | 2008-10-27 | Enhanced echo cancellation |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101826891A CN101826891A (zh) | 2010-09-08 |
CN101826891B true CN101826891B (zh) | 2014-05-07 |
Family
ID=41667374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200910208648.7A Expired - Fee Related CN101826891B (zh) | 2008-10-27 | 2009-10-23 | 增强回波消除 |
Country Status (3)
Country | Link |
---|---|
US (2) | US8320553B2 (zh) |
EP (1) | EP2180601B1 (zh) |
CN (1) | CN101826891B (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5025753B2 (ja) * | 2010-03-31 | 2012-09-12 | 株式会社東芝 | エコーキャンセル装置、方法 |
US8295214B2 (en) * | 2010-04-22 | 2012-10-23 | Plx Technology, Inc. | Reducing transmit signal components of a receive signal of a transceiver |
EP2686846A4 (en) * | 2011-03-18 | 2015-04-22 | Nokia Corp | DEVICE FOR AUDIO SIGNAL PROCESSING |
EP2845189B1 (en) * | 2012-04-30 | 2018-09-05 | Creative Technology Ltd. | A universal reconfigurable echo cancellation system |
US9973633B2 (en) | 2014-11-17 | 2018-05-15 | At&T Intellectual Property I, L.P. | Pre-distortion system for cancellation of nonlinear distortion in mobile devices |
CN108140395B (zh) * | 2015-09-25 | 2022-01-04 | 美高森美半导体(美国)股份有限公司 | 舒适噪声生成装置和方法 |
EP3692703B9 (en) | 2017-10-04 | 2021-11-17 | proactivaudio GmbH | Echo canceller and method therefor |
CN110246516B (zh) * | 2019-07-25 | 2022-06-17 | 福建师范大学福清分校 | 一种语音通信中小空间回声信号的处理方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN86100444A (zh) * | 1985-03-14 | 1986-09-10 | 北方电信有限公司 | 多级回波消除器 |
CN1123072A (zh) * | 1993-05-14 | 1996-05-22 | 艾利森电话股份有限公司 | 用级联的自适应滤波器进行回波消除的方法和回波消除器 |
EP0604948B1 (en) * | 1992-12-28 | 2000-03-22 | Nec Corporation | Echo canceller with adaptive suppression of residual echo level |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5606550A (en) * | 1995-05-22 | 1997-02-25 | Hughes Electronics | Echo canceller and method for a voice network using low rate coding and digital speech interpolation transmission |
KR100233463B1 (ko) * | 1997-03-07 | 1999-12-01 | 윤종용 | 반향제거장치 및 방법 |
US6256606B1 (en) * | 1998-11-30 | 2001-07-03 | Conexant Systems, Inc. | Silence description coding for multi-rate speech codecs |
US6526139B1 (en) * | 1999-11-03 | 2003-02-25 | Tellabs Operations, Inc. | Consolidated noise injection in a voice processing system |
US7505594B2 (en) * | 2000-12-19 | 2009-03-17 | Qualcomm Incorporated | Discontinuous transmission (DTX) controller system and method |
US20030202475A1 (en) * | 2002-04-25 | 2003-10-30 | Qingxin Chen | Multiplexing variable-rate data with data services |
CA2392640A1 (en) * | 2002-07-05 | 2004-01-05 | Voiceage Corporation | A method and device for efficient in-based dim-and-burst signaling and half-rate max operation in variable bit-rate wideband speech coding for cdma wireless systems |
US7050576B2 (en) * | 2002-08-20 | 2006-05-23 | Texas Instruments Incorporated | Double talk, NLP and comfort noise |
US7023880B2 (en) * | 2002-10-28 | 2006-04-04 | Qualcomm Incorporated | Re-formatting variable-rate vocoder frames for inter-system transmissions |
US7412376B2 (en) * | 2003-09-10 | 2008-08-12 | Microsoft Corporation | System and method for real-time detection and preservation of speech onset in a signal |
US7558729B1 (en) * | 2004-07-16 | 2009-07-07 | Mindspeed Technologies, Inc. | Music detection for enhancing echo cancellation and speech coding |
PL1897085T3 (pl) * | 2005-06-18 | 2017-10-31 | Nokia Technologies Oy | System i sposób adaptacyjnej transmisji parametrów szumu łagodzącego w czasie nieciągłej transmisji mowy |
US7610197B2 (en) * | 2005-08-31 | 2009-10-27 | Motorola, Inc. | Method and apparatus for comfort noise generation in speech communication systems |
US20070294087A1 (en) * | 2006-05-05 | 2007-12-20 | Nokia Corporation | Synthesizing comfort noise |
-
2008
- 2008-10-27 US US12/258,723 patent/US8320553B2/en not_active Expired - Fee Related
-
2009
- 2009-10-23 CN CN200910208648.7A patent/CN101826891B/zh not_active Expired - Fee Related
- 2009-10-27 EP EP09174214.8A patent/EP2180601B1/en active Active
-
2012
- 2012-10-24 US US13/659,374 patent/US8873740B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN86100444A (zh) * | 1985-03-14 | 1986-09-10 | 北方电信有限公司 | 多级回波消除器 |
EP0604948B1 (en) * | 1992-12-28 | 2000-03-22 | Nec Corporation | Echo canceller with adaptive suppression of residual echo level |
CN1123072A (zh) * | 1993-05-14 | 1996-05-22 | 艾利森电话股份有限公司 | 用级联的自适应滤波器进行回波消除的方法和回波消除器 |
Also Published As
Publication number | Publication date |
---|---|
US8873740B2 (en) | 2014-10-28 |
US20130108036A1 (en) | 2013-05-02 |
CN101826891A (zh) | 2010-09-08 |
EP2180601A1 (en) | 2010-04-28 |
EP2180601B1 (en) | 2013-11-20 |
US20100104091A1 (en) | 2010-04-29 |
US8320553B2 (en) | 2012-11-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
ASS | Succession or assignment of patent right |
Owner name: YANXING BIDEKE CO., LTD. Free format text: FORMER OWNER: NORTEL NETWORKS LTD (CA) Effective date: 20130426 Owner name: APPLE COMPUTER, INC. Free format text: FORMER OWNER: YANXING BIDEKE CO., LTD. Effective date: 20130426 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20130426 Address after: American California Applicant after: APPLE Inc. Address before: American New York Applicant before: NORTEL NETWORKS LTD. Effective date of registration: 20130426 Address after: American New York Applicant after: NORTEL NETWORKS LTD. Address before: Quebec Applicant before: NORTEL NETWORKS Ltd. |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20181023 |