NO327377B1 - Fremgangsmate og system for klokkedriftskompensering - Google Patents

Fremgangsmate og system for klokkedriftskompensering Download PDF

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Publication number
NO327377B1
NO327377B1 NO20076533A NO20076533A NO327377B1 NO 327377 B1 NO327377 B1 NO 327377B1 NO 20076533 A NO20076533 A NO 20076533A NO 20076533 A NO20076533 A NO 20076533A NO 327377 B1 NO327377 B1 NO 327377B1
Authority
NO
Norway
Prior art keywords
acquisition
clock
playback
sample
time domain
Prior art date
Application number
NO20076533A
Other languages
English (en)
Norwegian (no)
Other versions
NO20076533L (no
Inventor
Trygve Frederik Marton
Torgeir Grothe Lien
Original Assignee
Tandberg Telecom As
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 Tandberg Telecom As filed Critical Tandberg Telecom As
Priority to NO20076533A priority Critical patent/NO327377B1/no
Priority to EP08862488.7A priority patent/EP2235928B1/en
Priority to PCT/NO2008/000453 priority patent/WO2009078733A1/en
Priority to CN2008801142731A priority patent/CN101843082B/zh
Priority to JP2010539341A priority patent/JP5357179B2/ja
Priority to US12/338,719 priority patent/US8515086B2/en
Publication of NO20076533L publication Critical patent/NO20076533L/no
Publication of NO327377B1 publication Critical patent/NO327377B1/no

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Arrangements for interconnection not involving centralised switching
    • H04M9/08Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082Two-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)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Telephone Function (AREA)
  • Communication Control (AREA)
  • Analogue/Digital Conversion (AREA)
NO20076533A 2007-12-18 2007-12-18 Fremgangsmate og system for klokkedriftskompensering NO327377B1 (no)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NO20076533A NO327377B1 (no) 2007-12-18 2007-12-18 Fremgangsmate og system for klokkedriftskompensering
EP08862488.7A EP2235928B1 (en) 2007-12-18 2008-12-16 A method and system for clock drift compensation
PCT/NO2008/000453 WO2009078733A1 (en) 2007-12-18 2008-12-16 A method and system for clock drift compensation
CN2008801142731A CN101843082B (zh) 2007-12-18 2008-12-16 用于时钟漂移补偿的方法和系统
JP2010539341A JP5357179B2 (ja) 2007-12-18 2008-12-16 クロックドリフト補償の方法とシステム
US12/338,719 US8515086B2 (en) 2007-12-18 2008-12-18 Method and system for clock drift compensation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20076533A NO327377B1 (no) 2007-12-18 2007-12-18 Fremgangsmate og system for klokkedriftskompensering

Publications (2)

Publication Number Publication Date
NO20076533L NO20076533L (no) 2009-06-19
NO327377B1 true NO327377B1 (no) 2009-06-22

Family

ID=40795720

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20076533A NO327377B1 (no) 2007-12-18 2007-12-18 Fremgangsmate og system for klokkedriftskompensering

Country Status (6)

Country Link
US (1) US8515086B2 (zh)
EP (1) EP2235928B1 (zh)
JP (1) JP5357179B2 (zh)
CN (1) CN101843082B (zh)
NO (1) NO327377B1 (zh)
WO (1) WO2009078733A1 (zh)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110235500A1 (en) * 2010-03-24 2011-09-29 Kishan Shenoi Integrated echo canceller and speech codec for voice-over IP(VoIP)
US8738956B2 (en) * 2011-04-28 2014-05-27 Futurewei Technologies, Inc. Method and apparatus for updating a fractional time interval using time-domain interpolators in optical communications
WO2012158168A1 (en) * 2011-05-18 2012-11-22 Google Inc. Clock drift compensation method and apparatus
US9491404B2 (en) 2011-10-27 2016-11-08 Polycom, Inc. Compensating for different audio clocks between devices using ultrasonic beacon
US8896651B2 (en) * 2011-10-27 2014-11-25 Polycom, Inc. Portable devices as videoconferencing peripherals
US9203633B2 (en) 2011-10-27 2015-12-01 Polycom, Inc. Mobile group conferencing with portable devices
US9024998B2 (en) 2011-10-27 2015-05-05 Pollycom, Inc. Pairing devices in conference using ultrasonic beacon
CN102568494B (zh) * 2012-02-23 2014-02-05 贵阳朗玛信息技术股份有限公司 消除回声的优化方法、装置及系统
CN102780821B (zh) * 2012-07-06 2014-08-13 歌尔声学股份有限公司 一种送受话端采样率偏差纠正方法和系统
US9025762B2 (en) * 2012-10-23 2015-05-05 Cisco Technology, Inc. System and method for clock synchronization of acoustic echo canceller (AEC) with different sampling clocks for speakers and microphones
US8880929B2 (en) * 2012-11-19 2014-11-04 Blackfire Research Corporation Indirect clock measuring and media adjustment
JP6038635B2 (ja) * 2012-12-21 2016-12-07 株式会社東芝 信号処理装置および信号処理方法
US9219456B1 (en) * 2013-12-17 2015-12-22 Amazon Technologies, Inc. Correcting clock drift via embedded sin waves
US10147441B1 (en) 2013-12-19 2018-12-04 Amazon Technologies, Inc. Voice controlled system
US9100090B2 (en) * 2013-12-20 2015-08-04 Csr Technology Inc. Acoustic echo cancellation (AEC) for a close-coupled speaker and microphone system
US9373318B1 (en) 2014-03-27 2016-06-21 Amazon Technologies, Inc. Signal rate synchronization for remote acoustic echo cancellation
US9589575B1 (en) * 2015-12-02 2017-03-07 Amazon Technologies, Inc. Asynchronous clock frequency domain acoustic echo canceller
CN105553598B (zh) * 2016-01-10 2017-09-29 北京航空航天大学 一种基于m估计稳健回归的时间触发以太网时钟补偿方法
US10592442B2 (en) * 2017-12-11 2020-03-17 Advanced Micro Devices, Inc. Asynchronous buffer with pointer offsets
CN108281149B (zh) * 2017-12-29 2021-08-27 芯原微电子(北京)有限公司 一种基于加Blackman窗的FIR滤波器的音频采样率转换方法及系统
US10692515B2 (en) * 2018-04-17 2020-06-23 Fortemedia, Inc. Devices for acoustic echo cancellation and methods thereof
US10887038B2 (en) * 2018-09-28 2021-01-05 Samsung Electronics Co., Ltd. GNSS-based multi-modal clock correction
EP4005230A1 (en) * 2019-07-25 2022-06-01 Unify Patente GmbH & Co. KG Method and system for avoiding howling disturbance on conferences

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2802367B1 (fr) 1999-12-14 2006-08-18 France Telecom Procede temps reel de traitement et de gestion pour l'annulation d'echo entre haut-parleur et microphone d'un terminal informatique
US6754295B1 (en) * 2000-04-07 2004-06-22 Comrex Corporation Method and apparatus for synchronizing data transmission and reception over a network
US7277554B2 (en) * 2001-08-08 2007-10-02 Gn Resound North America Corporation Dynamic range compression using digital frequency warping
US6747581B2 (en) 2002-02-01 2004-06-08 Octiv, Inc. Techniques for variable sample rate conversion
US7120259B1 (en) * 2002-05-31 2006-10-10 Microsoft Corporation Adaptive estimation and compensation of clock drift in acoustic echo cancellers
CN100454284C (zh) * 2002-12-24 2009-01-21 联想(北京)有限公司 实现远程实时播放接收声音的方法及系统
FR2867288B1 (fr) * 2004-03-03 2006-06-02 Centre Nat Rech Scient Procede de synchronisation de donnees, notamment distribuees prenant en compte les imprecisions et derives des horloges
NO328256B1 (no) 2004-12-29 2010-01-18 Tandberg Telecom As Audiosystem
WO2006087813A1 (ja) 2005-02-21 2006-08-24 Fujitsu Limited エコーキャンセラ
US20070019802A1 (en) * 2005-06-30 2007-01-25 Symbol Technologies, Inc. Audio data stream synchronization
US20070165837A1 (en) * 2005-12-30 2007-07-19 Microsoft Corporation Synchronizing Input Streams for Acoustic Echo Cancellation
US8295475B2 (en) * 2006-01-13 2012-10-23 Microsoft Corporation Selective glitch detection, clock drift compensation, and anti-clipping in audio echo cancellation

Also Published As

Publication number Publication date
EP2235928A4 (en) 2011-05-04
CN101843082B (zh) 2013-09-04
WO2009078733A1 (en) 2009-06-25
JP5357179B2 (ja) 2013-12-04
NO20076533L (no) 2009-06-19
US20090185695A1 (en) 2009-07-23
EP2235928A1 (en) 2010-10-06
CN101843082A (zh) 2010-09-22
US8515086B2 (en) 2013-08-20
EP2235928B1 (en) 2013-07-31
JP2011512698A (ja) 2011-04-21

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