DE69226460D1 - Mehrkanalechokompensationsverfahren und Gerät - Google Patents

Mehrkanalechokompensationsverfahren und Gerät

Info

Publication number
DE69226460D1
DE69226460D1 DE69226460T DE69226460T DE69226460D1 DE 69226460 D1 DE69226460 D1 DE 69226460D1 DE 69226460 T DE69226460 T DE 69226460T DE 69226460 T DE69226460 T DE 69226460T DE 69226460 D1 DE69226460 D1 DE 69226460D1
Authority
DE
Germany
Prior art keywords
echo cancellation
cancellation method
channel echo
channel
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
Application number
DE69226460T
Other languages
English (en)
Other versions
DE69226460T2 (de
Inventor
Akihiro Nec Corporation Hirano
Akihiko Nec Corporati Sugiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE69226460D1 publication Critical patent/DE69226460D1/de
Publication of DE69226460T2 publication Critical patent/DE69226460T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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)
  • Filters That Use Time-Delay Elements (AREA)
  • Circuit For Audible Band Transducer (AREA)
DE69226460T 1991-03-14 1992-03-13 Mehrkanalechokompensationsverfahren und Gerät Expired - Fee Related DE69226460T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3049445A JP2792252B2 (ja) 1991-03-14 1991-03-14 多チャンネルエコー除去方法および装置

Publications (2)

Publication Number Publication Date
DE69226460D1 true DE69226460D1 (de) 1998-09-10
DE69226460T2 DE69226460T2 (de) 1999-04-29

Family

ID=12831328

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69226460T Expired - Fee Related DE69226460T2 (de) 1991-03-14 1992-03-13 Mehrkanalechokompensationsverfahren und Gerät

Country Status (5)

Country Link
US (1) US5396554A (de)
EP (1) EP0503660B1 (de)
JP (1) JP2792252B2 (de)
CA (1) CA2063037C (de)
DE (1) DE69226460T2 (de)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5307405A (en) * 1992-09-25 1994-04-26 Qualcomm Incorporated Network echo canceller
US5590241A (en) * 1993-04-30 1996-12-31 Motorola Inc. Speech processing system and method for enhancing a speech signal in a noisy environment
JPH084243B2 (ja) * 1993-05-31 1996-01-17 日本電気株式会社 多チャンネルエコー除去方法および装置
US5689641A (en) * 1993-10-01 1997-11-18 Vicor, Inc. Multimedia collaboration system arrangement for routing compressed AV signal through a participant site without decompressing the AV signal
US5664019A (en) * 1995-02-08 1997-09-02 Interval Research Corporation Systems for feedback cancellation in an audio interface garment
DE19517469A1 (de) * 1995-05-12 1996-11-14 Sel Alcatel Ag Freisprechverfahren für ein mehrkanaliges Übertragungssystem
CA2186416C (en) * 1995-09-26 2000-04-18 Suehiro Shimauchi Method and apparatus for multi-channel acoustic echo cancellation
WO1997031439A1 (en) * 1996-02-26 1997-08-28 Interval Research Corporation Systems for feedback cancellation in an audio interface garment
US5774562A (en) * 1996-03-25 1998-06-30 Nippon Telegraph And Telephone Corp. Method and apparatus for dereverberation
JPH09266456A (ja) * 1996-03-28 1997-10-07 Mitsubishi Electric Corp エコーキャンセラ
JP3152292B2 (ja) * 1997-04-15 2001-04-03 日本電気株式会社 多チャネルエコー除去方法及び装置
US6549627B1 (en) * 1998-01-30 2003-04-15 Telefonaktiebolaget Lm Ericsson Generating calibration signals for an adaptive beamformer
WO1999053674A1 (en) * 1998-04-08 1999-10-21 British Telecommunications Public Limited Company Echo cancellation
JP3319403B2 (ja) * 1998-09-02 2002-09-03 日本電気株式会社 多チャネルエコー除去方法及び装置
US6757385B1 (en) 1999-06-04 2004-06-29 Telefonaktiebolaget Lm Ericsson (Publ) Symmetry based subband acoustic echo cancellation
US6934387B1 (en) * 1999-12-17 2005-08-23 Marvell International Ltd. Method and apparatus for digital near-end echo/near-end crosstalk cancellation with adaptive correlation
US7310425B1 (en) * 1999-12-28 2007-12-18 Agere Systems Inc. Multi-channel frequency-domain adaptive filter method and apparatus
JP2002009675A (ja) * 2000-06-26 2002-01-11 Nec Corp 多重化回線用エコー除去方法及び装置
FR2828327B1 (fr) * 2000-10-03 2003-12-12 France Telecom Procede et dispositif de reduction d'echo
EP1621043A4 (de) * 2003-04-23 2009-03-04 Rh Lyon Corp Verfahren und vorrichtung zur schallübertragung mit minimaler störung durch hintergrundgeräusche und minimaler lokaler akustischer strahlung
US7826624B2 (en) * 2004-10-15 2010-11-02 Lifesize Communications, Inc. Speakerphone self calibration and beam forming
US7720232B2 (en) * 2004-10-15 2010-05-18 Lifesize Communications, Inc. Speakerphone
US20060132595A1 (en) * 2004-10-15 2006-06-22 Kenoyer Michael L Speakerphone supporting video and audio features
US7720236B2 (en) * 2004-10-15 2010-05-18 Lifesize Communications, Inc. Updating modeling information based on offline calibration experiments
US7760887B2 (en) * 2004-10-15 2010-07-20 Lifesize Communications, Inc. Updating modeling information based on online data gathering
US7970151B2 (en) * 2004-10-15 2011-06-28 Lifesize Communications, Inc. Hybrid beamforming
US8116500B2 (en) * 2004-10-15 2012-02-14 Lifesize Communications, Inc. Microphone orientation and size in a speakerphone
US7903137B2 (en) * 2004-10-15 2011-03-08 Lifesize Communications, Inc. Videoconferencing echo cancellers
US7991167B2 (en) * 2005-04-29 2011-08-02 Lifesize Communications, Inc. Forming beams with nulls directed at noise sources
US7970150B2 (en) * 2005-04-29 2011-06-28 Lifesize Communications, Inc. Tracking talkers using virtual broadside scan and directed beams
US7593539B2 (en) * 2005-04-29 2009-09-22 Lifesize Communications, Inc. Microphone and speaker arrangement in speakerphone
US9497330B2 (en) 2008-09-26 2016-11-15 Nec Corporation Signal processing method, signal processing device, and signal processing program
JP5472643B2 (ja) 2008-09-26 2014-04-16 日本電気株式会社 信号処理方法、信号処理装置、および信号処理プログラム
US9232072B2 (en) 2013-03-13 2016-01-05 Google Inc. Participant controlled spatial AEC
US9565493B2 (en) 2015-04-30 2017-02-07 Shure Acquisition Holdings, Inc. Array microphone system and method of assembling the same
US9554207B2 (en) 2015-04-30 2017-01-24 Shure Acquisition Holdings, Inc. Offset cartridge microphones
US9659555B1 (en) * 2016-02-09 2017-05-23 Amazon Technologies, Inc. Multichannel acoustic echo cancellation
US9653060B1 (en) * 2016-02-09 2017-05-16 Amazon Technologies, Inc. Hybrid reference signal for acoustic echo cancellation
US10367948B2 (en) 2017-01-13 2019-07-30 Shure Acquisition Holdings, Inc. Post-mixing acoustic echo cancellation systems and methods
US10522167B1 (en) * 2018-02-13 2019-12-31 Amazon Techonlogies, Inc. Multichannel noise cancellation using deep neural network masking
WO2019231632A1 (en) 2018-06-01 2019-12-05 Shure Acquisition Holdings, Inc. Pattern-forming microphone array
US11297423B2 (en) 2018-06-15 2022-04-05 Shure Acquisition Holdings, Inc. Endfire linear array microphone
WO2020061353A1 (en) 2018-09-20 2020-03-26 Shure Acquisition Holdings, Inc. Adjustable lobe shape for array microphones
US11558693B2 (en) 2019-03-21 2023-01-17 Shure Acquisition Holdings, Inc. Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition and voice activity detection functionality
US11303981B2 (en) 2019-03-21 2022-04-12 Shure Acquisition Holdings, Inc. Housings and associated design features for ceiling array microphones
US11438691B2 (en) 2019-03-21 2022-09-06 Shure Acquisition Holdings, Inc. Auto focus, auto focus within regions, and auto placement of beamformed microphone lobes with inhibition functionality
US11445294B2 (en) 2019-05-23 2022-09-13 Shure Acquisition Holdings, Inc. Steerable speaker array, system, and method for the same
TW202105369A (zh) 2019-05-31 2021-02-01 美商舒爾獲得控股公司 整合語音及雜訊活動偵測之低延時自動混波器
US11297426B2 (en) 2019-08-23 2022-04-05 Shure Acquisition Holdings, Inc. One-dimensional array microphone with improved directivity
CN110634485B (zh) * 2019-10-16 2023-06-13 声耕智能科技(西安)研究院有限公司 语音交互服务处理器及处理方法
US11552611B2 (en) 2020-02-07 2023-01-10 Shure Acquisition Holdings, Inc. System and method for automatic adjustment of reference gain
USD944776S1 (en) 2020-05-05 2022-03-01 Shure Acquisition Holdings, Inc. Audio device
WO2021243368A2 (en) 2020-05-29 2021-12-02 Shure Acquisition Holdings, Inc. Transducer steering and configuration systems and methods using a local positioning system
US11785380B2 (en) 2021-01-28 2023-10-10 Shure Acquisition Holdings, Inc. Hybrid audio beamforming system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6414150A (en) * 1987-07-07 1989-01-18 Fujikura Ltd Production of superconductor
JPH01190162A (ja) * 1988-01-26 1989-07-31 Nec Corp 多チャネル用音声会議装置
JPH01260967A (ja) * 1988-04-11 1989-10-18 Nec Corp 多チヤネル信号用音声会議装置
JPH01319360A (ja) * 1988-06-20 1989-12-25 Nec Corp 音声会議装置
JPH0322631A (ja) * 1989-06-19 1991-01-31 Mitsubishi Electric Corp エコーキャンセラ装置

Also Published As

Publication number Publication date
EP0503660A3 (en) 1993-09-22
DE69226460T2 (de) 1999-04-29
EP0503660A2 (de) 1992-09-16
US5396554A (en) 1995-03-07
CA2063037C (en) 1996-04-02
EP0503660B1 (de) 1998-08-05
JP2792252B2 (ja) 1998-09-03
CA2063037A1 (en) 1992-09-15
JPH04284732A (ja) 1992-10-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee