HK109696A - Echo canceller with improved doubletalk detection - Google Patents
Echo canceller with improved doubletalk detectionInfo
- Publication number
- HK109696A HK109696A HK109696A HK109696A HK109696A HK 109696 A HK109696 A HK 109696A HK 109696 A HK109696 A HK 109696A HK 109696 A HK109696 A HK 109696A HK 109696 A HK109696 A HK 109696A
- Authority
- HK
- Hong Kong
- Prior art keywords
- improved
- echo canceller
- doubletalk detection
- doubletalk
- detection
- 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
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Filters That Use Time-Delay Elements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL9002790A NL9002790A (nl) | 1990-12-18 | 1990-12-18 | Echocompensator met verbeterde dubbelspraak detectie. |
Publications (1)
Publication Number | Publication Date |
---|---|
HK109696A true HK109696A (en) | 1996-07-05 |
Family
ID=19858162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK109696A HK109696A (en) | 1990-12-18 | 1996-06-27 | Echo canceller with improved doubletalk detection |
Country Status (7)
Country | Link |
---|---|
US (1) | US5390250A (xx) |
EP (1) | EP0491430B1 (xx) |
JP (1) | JP3186809B2 (xx) |
KR (1) | KR100221251B1 (xx) |
DE (1) | DE69114999T2 (xx) |
HK (1) | HK109696A (xx) |
NL (1) | NL9002790A (xx) |
Families Citing this family (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5864560A (en) | 1993-01-08 | 1999-01-26 | Multi-Tech Systems, Inc. | Method and apparatus for mode switching in a voice over data computer-based personal communications system |
US5452289A (en) | 1993-01-08 | 1995-09-19 | Multi-Tech Systems, Inc. | Computer-based multifunction personal communications system |
US5535204A (en) | 1993-01-08 | 1996-07-09 | Multi-Tech Systems, Inc. | Ringdown and ringback signalling for a computer-based multifunction personal communications system |
US6009082A (en) | 1993-01-08 | 1999-12-28 | Multi-Tech Systems, Inc. | Computer-based multifunction personal communication system with caller ID |
US5453986A (en) | 1993-01-08 | 1995-09-26 | Multi-Tech Systems, Inc. | Dual port interface for a computer-based multifunction personal communication system |
US7082106B2 (en) * | 1993-01-08 | 2006-07-25 | Multi-Tech Systems, Inc. | Computer-based multi-media communications system and method |
JPH06216811A (ja) * | 1993-01-20 | 1994-08-05 | Toshiba Corp | エコーキャンセラを備えた音声通信装置 |
JPH06232957A (ja) * | 1993-01-29 | 1994-08-19 | Toshiba Corp | 音声通信装置 |
JPH06338829A (ja) * | 1993-05-28 | 1994-12-06 | American Teleph & Telegr Co <Att> | 通信システム内の反響除去方法と装置 |
JP2576767B2 (ja) * | 1993-09-10 | 1997-01-29 | 日本電気株式会社 | エコー消去方法およびエコーキャンセラ |
US5682386A (en) | 1994-04-19 | 1997-10-28 | Multi-Tech Systems, Inc. | Data/voice/fax compression multiplexer |
US5757801A (en) | 1994-04-19 | 1998-05-26 | Multi-Tech Systems, Inc. | Advanced priority statistical multiplexer |
DE4426226A1 (de) * | 1994-07-23 | 1996-01-25 | Philips Patentverwaltung | Schaltungsanordnung zum Übertragen von codierten Sprachsignalen |
US5577116A (en) * | 1994-09-16 | 1996-11-19 | North Carolina State University | Apparatus and method for echo characterization of a communication channel |
US5602913A (en) * | 1994-09-22 | 1997-02-11 | Hughes Electronics | Robust double-talk detection |
US5828756A (en) * | 1994-11-22 | 1998-10-27 | Lucent Technologies Inc. | Stereophonic acoustic echo cancellation using non-linear transformations |
US5495473A (en) * | 1994-12-28 | 1996-02-27 | Intel Corporation | Method and apparatus for implementing hardware independent echo cancellation in a full-duplex audio stream in a computer system |
US5631899A (en) * | 1995-05-31 | 1997-05-20 | Lucent Technologies Inc. | Acoustic echo canceler |
US5663955A (en) * | 1995-08-25 | 1997-09-02 | Lucent Technologies Inc. | Echo canceller system with shared coefficient memory |
US5664011A (en) * | 1995-08-25 | 1997-09-02 | Lucent Technologies Inc. | Echo canceller with adaptive and non-adaptive filters |
US5764753A (en) * | 1995-09-29 | 1998-06-09 | Crystal Semiconductor Corp. | Half-duplex controller |
US5631900A (en) * | 1995-09-29 | 1997-05-20 | Crystal Semiconductor | Double-Talk detector for echo canceller |
DE19543666A1 (de) * | 1995-11-23 | 1997-05-28 | Sel Alcatel Ag | Echokompensator |
SE505692C2 (sv) * | 1995-12-18 | 1997-09-29 | Ericsson Telefon Ab L M | Förfarande och anordning för ekosläckning genom skattning av effekt hos residualsignal |
US5937060A (en) * | 1996-02-09 | 1999-08-10 | Texas Instruments Incorporated | Residual echo suppression |
US5771440A (en) * | 1996-05-31 | 1998-06-23 | Motorola, Inc. | Communication device with dynamic echo suppression and background noise estimation |
CN1166160C (zh) | 1996-05-31 | 2004-09-08 | 皇家菲利浦电子有限公司 | 抑制输入信号中干扰成分的设备 |
US5796818A (en) * | 1996-08-08 | 1998-08-18 | Northern Telecom Limited | Dynamic optimization of handsfree microphone gain |
DE19639702C2 (de) * | 1996-09-26 | 2000-11-16 | Siemens Ag | Verfahren und Anordnung zur Begrenzung des Restechos |
US5953411A (en) * | 1996-12-18 | 1999-09-14 | Intel Corporation | Method and apparatus for maintaining audio sample correlation |
US6035034A (en) * | 1996-12-20 | 2000-03-07 | Telefonaktiebolaget L M Ericsson (Publ) | Double talk and echo path change detection in a telephony system |
US5943392A (en) * | 1997-01-24 | 1999-08-24 | Southwestern Bell Telephone Company | Device for measuring echo return loss in a two-two wire line system |
US6052462A (en) * | 1997-07-10 | 2000-04-18 | Tellabs Operations, Inc. | Double talk detection and echo control circuit |
SG77611A1 (en) * | 1997-11-13 | 2001-01-16 | Univ Singapore | Acoustic echo cancellation equipped with howling suppressor and double-talk detector |
US6031908A (en) * | 1997-11-14 | 2000-02-29 | Tellabs Operations, Inc. | Echo canceller employing dual-H architecture having variable adaptive gain settings |
JP3267556B2 (ja) * | 1998-02-18 | 2002-03-18 | 沖電気工業株式会社 | エコー除去装置および送話器 |
US6434110B1 (en) * | 1998-03-20 | 2002-08-13 | Cirrus Logic, Inc. | Full-duplex speakerphone circuit including a double-talk detector |
US8583427B2 (en) * | 1999-11-18 | 2013-11-12 | Broadcom Corporation | Voice and data exchange over a packet based network with voice detection |
KR100477638B1 (ko) * | 2001-09-11 | 2005-03-23 | 삼성전자주식회사 | 2d/3d 겸용 디스플레이 |
KR100443009B1 (ko) * | 2001-10-05 | 2004-08-04 | 엘지전자 주식회사 | 디엠티의 시간영역 에코 캔슬러 장치 및 그 제어방법 |
US6961423B2 (en) | 2002-06-24 | 2005-11-01 | Freescale Semiconductor, Inc. | Method and apparatus for performing adaptive filtering |
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 |
US7215765B2 (en) * | 2002-06-24 | 2007-05-08 | Freescale Semiconductor, Inc. | Method and apparatus for pure delay estimation in a communication system |
US6996229B2 (en) * | 2003-07-09 | 2006-02-07 | Utah State University | Echo cancellation filter |
US6954530B2 (en) | 2003-07-09 | 2005-10-11 | Utah State University | Echo cancellation filter |
US7065207B2 (en) * | 2003-09-11 | 2006-06-20 | Freescale Semiconductor, Inc. | Controlling attenuation during echo suppression |
JP4297055B2 (ja) | 2005-01-12 | 2009-07-15 | ヤマハ株式会社 | カラオケ装置 |
CN102131014A (zh) * | 2010-01-13 | 2011-07-20 | 歌尔声学股份有限公司 | 时频域联合回声消除装置及方法 |
CN108696648B (zh) * | 2018-05-16 | 2021-08-24 | 上海小度技术有限公司 | 一种短时语音信号处理的方法、装置、设备及存储介质 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4712235A (en) * | 1984-11-19 | 1987-12-08 | International Business Machines Corporation | Method and apparatus for improved control and time sharing of an echo canceller |
US4894820A (en) * | 1987-03-24 | 1990-01-16 | Oki Electric Industry Co., Ltd. | Double-talk detection in an echo canceller |
DE3840433A1 (de) * | 1988-12-01 | 1990-06-07 | Philips Patentverwaltung | Echokompensator |
-
1990
- 1990-12-18 NL NL9002790A patent/NL9002790A/nl not_active Application Discontinuation
-
1991
- 1991-12-11 DE DE69114999T patent/DE69114999T2/de not_active Expired - Fee Related
- 1991-12-11 EP EP91203253A patent/EP0491430B1/en not_active Expired - Lifetime
- 1991-12-16 JP JP33216691A patent/JP3186809B2/ja not_active Expired - Fee Related
- 1991-12-17 US US07/810,776 patent/US5390250A/en not_active Expired - Fee Related
- 1991-12-18 KR KR1019910023283A patent/KR100221251B1/ko not_active IP Right Cessation
-
1996
- 1996-06-27 HK HK109696A patent/HK109696A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US5390250A (en) | 1995-02-14 |
DE69114999T2 (de) | 1996-06-27 |
NL9002790A (nl) | 1992-07-16 |
JP3186809B2 (ja) | 2001-07-11 |
KR100221251B1 (ko) | 1999-09-15 |
KR920014338A (ko) | 1992-07-30 |
DE69114999D1 (de) | 1996-01-11 |
EP0491430B1 (en) | 1995-11-29 |
JPH04275724A (ja) | 1992-10-01 |
EP0491430A1 (en) | 1992-06-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |