WO2008142979A1 - テレビ会議装置 - Google Patents

テレビ会議装置 Download PDF

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Publication number
WO2008142979A1
WO2008142979A1 PCT/JP2008/058390 JP2008058390W WO2008142979A1 WO 2008142979 A1 WO2008142979 A1 WO 2008142979A1 JP 2008058390 W JP2008058390 W JP 2008058390W WO 2008142979 A1 WO2008142979 A1 WO 2008142979A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
filter
loudspeaker
section
microphone
Prior art date
Application number
PCT/JP2008/058390
Other languages
English (en)
French (fr)
Inventor
Toshiaki Ishibashi
Ryo Tanaka
Original Assignee
Yamaha Corporation
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 Yamaha Corporation filed Critical Yamaha Corporation
Priority to US12/600,400 priority Critical patent/US20100165071A1/en
Priority to CN200880016175A priority patent/CN101682810A/zh
Publication of WO2008142979A1 publication Critical patent/WO2008142979A1/ja

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
    • H04N7/142—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems
    • 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)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)

Abstract

　エコーキャンセラの処理負担を抑えたテレビ会議装置であって、モニタ付近にスピーカ、マイク、およびカメラを近接して設置したテレビ会議装置を提供する。エコーキャンセラ１９の前段に予備フィルタ部１８を設ける。予備フィルタ部１８は、ＬＰＦ１８１、固定型フィルタ１８２、およびポストプロセッサ１８３を備えている。制御部１４は、信号選択部１７が選択した収音ビーム信号に対応するフィルタ係数を固定型フィルタ１８２に設定する。このフィルタ係数はスピーカからマイクに回り込む音響伝達系の伝達関数を擬似したものである。スピーカに入力される音声信号（入力音声信号）のうち、低周波数帯域（例えば１ｋＨｚ以下）の成分が固定型フィルタ１８２に入力され、擬似信号が生成される。ポストプロセッサ１８３でこの擬似信号（回り込み成分）が除去され、補正収音ビーム信号ＭＳｓが生成される。
PCT/JP2008/058390 2007-05-16 2008-05-01 テレビ会議装置 WO2008142979A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/600,400 US20100165071A1 (en) 2007-05-16 2008-05-01 Video conference device
CN200880016175A CN101682810A (zh) 2007-05-16 2008-05-01 一种视频会议装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007130589A JP2008288785A (ja) 2007-05-16 2007-05-16 テレビ会議装置
JP2007-130589 2007-05-16

Publications (1)

Publication Number Publication Date
WO2008142979A1 true WO2008142979A1 (ja) 2008-11-27

Family

ID=40031694

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/058390 WO2008142979A1 (ja) 2007-05-16 2008-05-01 テレビ会議装置

Country Status (4)

Country Link
US (1) US20100165071A1 (ja)
JP (1) JP2008288785A (ja)
CN (1) CN101682810A (ja)
WO (1) WO2008142979A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8441515B2 (en) 2009-09-17 2013-05-14 Sony Corporation Method and apparatus for minimizing acoustic echo in video conferencing
JP2015502109A (ja) * 2011-11-25 2015-01-19 クリエイティブ テクノロジー リミテッドＣｒｅａｔｉｖｅ Ｔｅｃｈｎｏｌｏｇｙ Ｌｔｄ コンピュータとともに使用するのに適したスピーカ装置

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007052726A1 (ja) * 2005-11-02 2007-05-10 Yamaha Corporation 遠隔会議装置
JP4929740B2 (ja) * 2006-01-31 2012-05-09 ヤマハ株式会社 音声会議装置
WO2010044793A1 (en) * 2008-10-15 2010-04-22 Hewlett-Packard Development Company, L.P. A conferencing system with a database of mode definitions
JP2011114769A (ja) * 2009-11-30 2011-06-09 Nikon Corp 撮像装置
JP5593852B2 (ja) * 2010-06-01 2014-09-24 ソニー株式会社 音声信号処理装置、音声信号処理方法
CN102281425A (zh) * 2010-06-11 2011-12-14 华为终端有限公司 一种播放远端与会人员音频的方法、装置及远程视频会议系统
FR2977752A1 (fr) * 2011-07-06 2013-01-11 Archos Dispositif electronique pour generer un flux video de sortie a afficher sur un ecran de television.
US8896651B2 (en) * 2011-10-27 2014-11-25 Polycom, Inc. Portable devices as videoconferencing peripherals
CN103124386A (zh) * 2012-12-26 2013-05-29 山东共达电声股份有限公司 一种远讲用降噪、消回波、锐指向传声器
CN103475763A (zh) * 2013-09-26 2013-12-25 汉达尔通信技术(北京)有限公司 Pstn通信终端消除通话回声的电路
JP6349899B2 (ja) 2014-04-14 2018-07-04 ヤマハ株式会社 放収音装置
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
US9530426B1 (en) * 2015-06-24 2016-12-27 Microsoft Technology Licensing, Llc Filtering sounds for conferencing applications
US9747920B2 (en) * 2015-12-17 2017-08-29 Amazon Technologies, Inc. Adaptive beamforming to create reference channels
US10367948B2 (en) 2017-01-13 2019-07-30 Shure Acquisition Holdings, Inc. Post-mixing acoustic echo cancellation systems and methods
WO2018140618A1 (en) 2017-01-27 2018-08-02 Shure Acquisiton Holdings, Inc. Array microphone module and system
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
EP3854108A1 (en) 2018-09-20 2021-07-28 Shure Acquisition Holdings, Inc. Adjustable lobe shape for array microphones
US11109133B2 (en) 2018-09-21 2021-08-31 Shure Acquisition Holdings, Inc. Array microphone module and system
CN111048093A (zh) * 2018-10-12 2020-04-21 深圳海翼智新科技有限公司 会议音箱及会议记录方法、设备、系统和计算机存储介质
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
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
WO2020191354A1 (en) 2019-03-21 2020-09-24 Shure Acquisition Holdings, Inc. Housings and associated design features for ceiling array microphones
EP3973716A1 (en) 2019-05-23 2022-03-30 Shure Acquisition Holdings, Inc. Steerable speaker array, system, and method for the same
JP2022535229A (ja) 2019-05-31 2022-08-05 シュアー アクイジッション ホールディングス インコーポレイテッド 音声およびノイズアクティビティ検出と統合された低レイテンシオートミキサー
JP2022545113A (ja) 2019-08-23 2022-10-25 シュアー アクイジッション ホールディングス インコーポレイテッド 指向性が改善された一次元アレイマイクロホン
US11552611B2 (en) 2020-02-07 2023-01-10 Shure Acquisition Holdings, Inc. System and method for automatic adjustment of reference gain
WO2021243368A2 (en) 2020-05-29 2021-12-02 Shure Acquisition Holdings, Inc. Transducer steering and configuration systems and methods using a local positioning system
EP4285605A1 (en) 2021-01-28 2023-12-06 Shure Acquisition Holdings, Inc. Hybrid audio beamforming system
CN114120950B (zh) * 2022-01-27 2022-06-10 荣耀终端有限公司 一种人声屏蔽方法和电子设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07107590A (ja) * 1993-09-30 1995-04-21 Oki Electric Ind Co Ltd ハウリングキャンセラ
WO2005076662A1 (en) * 2004-01-07 2005-08-18 Koninklijke Philips Electronics N.V. Audio system providing for filter coefficient copying
WO2006049260A1 (ja) * 2004-11-08 2006-05-11 Nec Corporation 信号処理の方法、信号処理の装置および信号処理用プログラム
JP2006279565A (ja) * 2005-03-29 2006-10-12 Yamaha Corp アレイスピーカ制御装置及びアレイマイク制御装置
WO2007018293A1 (ja) * 2005-08-11 2007-02-15 Asahi Kasei Kabushiki Kaisha 音源分離装置、音声認識装置、携帯電話機、音源分離方法、及び、プログラム
JP2007078545A (ja) * 2005-09-15 2007-03-29 Yamaha Corp 対象物検出装置及び音声会議装置
JP2007096390A (ja) * 2005-09-27 2007-04-12 Yamaha Corp スピーカシステムおよびスピーカ装置
WO2007052726A1 (ja) * 2005-11-02 2007-05-10 Yamaha Corporation 遠隔会議装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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JP3541339B2 (ja) * 1997-06-26 2004-07-07 富士通株式会社 マイクロホンアレイ装置
JP3972921B2 (ja) * 2004-05-11 2007-09-05 ソニー株式会社 音声集音装置とエコーキャンセル処理方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07107590A (ja) * 1993-09-30 1995-04-21 Oki Electric Ind Co Ltd ハウリングキャンセラ
WO2005076662A1 (en) * 2004-01-07 2005-08-18 Koninklijke Philips Electronics N.V. Audio system providing for filter coefficient copying
WO2006049260A1 (ja) * 2004-11-08 2006-05-11 Nec Corporation 信号処理の方法、信号処理の装置および信号処理用プログラム
JP2006279565A (ja) * 2005-03-29 2006-10-12 Yamaha Corp アレイスピーカ制御装置及びアレイマイク制御装置
WO2007018293A1 (ja) * 2005-08-11 2007-02-15 Asahi Kasei Kabushiki Kaisha 音源分離装置、音声認識装置、携帯電話機、音源分離方法、及び、プログラム
JP2007078545A (ja) * 2005-09-15 2007-03-29 Yamaha Corp 対象物検出装置及び音声会議装置
JP2007096390A (ja) * 2005-09-27 2007-04-12 Yamaha Corp スピーカシステムおよびスピーカ装置
WO2007052726A1 (ja) * 2005-11-02 2007-05-10 Yamaha Corporation 遠隔会議装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8441515B2 (en) 2009-09-17 2013-05-14 Sony Corporation Method and apparatus for minimizing acoustic echo in video conferencing
JP2015502109A (ja) * 2011-11-25 2015-01-19 クリエイティブ テクノロジー リミテッドＣｒｅａｔｉｖｅ Ｔｅｃｈｎｏｌｏｇｙ Ｌｔｄ コンピュータとともに使用するのに適したスピーカ装置

Also Published As

Publication number Publication date
US20100165071A1 (en) 2010-07-01
JP2008288785A (ja) 2008-11-27
CN101682810A (zh) 2010-03-24

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