CA2406926A1 - Prise de son ambiant multi-canal et techniques de reproduction qui preservent les harmoniques spatiales en trois dimensions - Google Patents

Prise de son ambiant multi-canal et techniques de reproduction qui preservent les harmoniques spatiales en trois dimensions Download PDF

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Publication number
CA2406926A1
CA2406926A1 CA002406926A CA2406926A CA2406926A1 CA 2406926 A1 CA2406926 A1 CA 2406926A1 CA 002406926 A CA002406926 A CA 002406926A CA 2406926 A CA2406926 A CA 2406926A CA 2406926 A1 CA2406926 A1 CA 2406926A1
Authority
CA
Canada
Prior art keywords
speakers
sound
sound field
signals
harmonics
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.)
Abandoned
Application number
CA002406926A
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English (en)
Inventor
James A. Moorer
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.)
S Aqua Semiconductor LLC
Original Assignee
Individual
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
Priority claimed from US09/552,378 external-priority patent/US6904152B1/en
Application filed by Individual filed Critical Individual
Publication of CA2406926A1 publication Critical patent/CA2406926A1/fr
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/15—Aspects of sound capture and related signal processing for recording or reproduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/11—Application of ambisonics in stereophonic audio systems

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)

Abstract

L'invention concerne des techniques permettant d'enregistrer ou de transmettre un champ de signaux sonores monauraux ou directionnels multiples qui reproduisent par des haut-parleurs discrets multiples un champ sonore ayant des harmoniques spatiaux qui correspondent sensiblement exactement à celles du champ sonore d'origine. Des sources de sons monauraux sont placées pendant la prise de son pour utiliser des contributions de toutes les voies de locuteur afin de préserver les harmoniques spatiales. Si un ensemble particulier de locuteurs est différent de ce que l'on considère pendant la prise de son, les signaux locuteur sont rematricés à domicile, au théâtre ou autre lieu de reproduction sonore de telle façon que les harmoniques spatiales du champ sonore reproduit par les différents ensembles locuteurs correspondent à celles du champ sonore d'origine. Une alternative comporte l'enregistrement ou la transmission de signaux de microphone directionnel, ou de leurs composantes harmoniques spatiales, et ensuite le matriçage de ces signaux au niveau du lieu de reproduction sonore de telle manière que l'on tienne compte de l'ensemble locuteur spécifique. Les techniques sont décrites à la fois pour un champ sonore bidimensional et pour le cas plus général tridimensionnel, ce dernier étant basé sur l'utilisation d'harmoniques sphériques.
CA002406926A 2000-04-19 2000-10-06 Prise de son ambiant multi-canal et techniques de reproduction qui preservent les harmoniques spatiales en trois dimensions Abandoned CA2406926A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/552,378 US6904152B1 (en) 1997-09-24 2000-04-19 Multi-channel surround sound mastering and reproduction techniques that preserve spatial harmonics in three dimensions
US09/552,378 2000-04-19
PCT/US2000/027851 WO2001082651A1 (fr) 2000-04-19 2000-10-06 Prise de son ambiant multi-canal et techniques de reproduction qui preservent les harmoniques spatiales en trois dimensions

Publications (1)

Publication Number Publication Date
CA2406926A1 true CA2406926A1 (fr) 2001-11-01

Family

ID=24205070

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002406926A Abandoned CA2406926A1 (fr) 2000-04-19 2000-10-06 Prise de son ambiant multi-canal et techniques de reproduction qui preservent les harmoniques spatiales en trois dimensions

Country Status (6)

Country Link
EP (1) EP1275272B1 (fr)
JP (1) JP4861593B2 (fr)
CN (1) CN1452851A (fr)
AU (1) AU2000280030A1 (fr)
CA (1) CA2406926A1 (fr)
WO (1) WO2001082651A1 (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2379147B (en) * 2001-04-18 2003-10-22 Univ York Sound processing
JP4016681B2 (ja) * 2002-03-18 2007-12-05 ヤマハ株式会社 効果付与装置
FR2847376B1 (fr) * 2002-11-19 2005-02-04 France Telecom Procede de traitement de donnees sonores et dispositif d'acquisition sonore mettant en oeuvre ce procede
FR2858403B1 (fr) * 2003-07-31 2005-11-18 Remy Henri Denis Bruno Systeme et procede de determination d'une representation d'un champ acoustique
SE0400997D0 (sv) * 2004-04-16 2004-04-16 Cooding Technologies Sweden Ab Efficient coding of multi-channel audio
US8290167B2 (en) * 2007-03-21 2012-10-16 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Method and apparatus for conversion between multi-channel audio formats
US9015051B2 (en) 2007-03-21 2015-04-21 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Reconstruction of audio channels with direction parameters indicating direction of origin
US8908873B2 (en) 2007-03-21 2014-12-09 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Method and apparatus for conversion between multi-channel audio formats
TWI455064B (zh) * 2007-12-20 2014-10-01 Thomson Licensing 聲影文件突起映圖之決定方法和裝置
US8615316B2 (en) 2008-01-23 2013-12-24 Lg Electronics Inc. Method and an apparatus for processing an audio signal
EP2083584B1 (fr) 2008-01-23 2010-09-15 LG Electronics Inc. Procédé et appareil de traitement de signal audio
KR100998913B1 (ko) * 2008-01-23 2010-12-08 엘지전자 주식회사 오디오 신호의 처리 방법 및 이의 장치
ES2425814T3 (es) * 2008-08-13 2013-10-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Aparato para determinar una señal de audio espacial convertida
GB2478834B (en) 2009-02-04 2012-03-07 Richard Furse Sound system
WO2011117399A1 (fr) * 2010-03-26 2011-09-29 Thomson Licensing Procédé et dispositif pour le décodage d'une représentation d'un champ sonore audio pour une lecture audio
ES2643163T3 (es) 2010-12-03 2017-11-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Aparato y procedimiento para codificación de audio espacial basada en geometría
KR102003191B1 (ko) * 2011-07-01 2019-07-24 돌비 레버러토리즈 라이쎈싱 코오포레이션 적응형 오디오 신호 생성， 코딩 및 렌더링을 위한 시스템 및 방법
US8996296B2 (en) * 2011-12-15 2015-03-31 Qualcomm Incorporated Navigational soundscaping
CN102695116B (zh) * 2012-05-30 2015-06-03 蒋憧 一种声音采集、处理和再现方法
CN102752701B (zh) * 2012-07-10 2014-09-17 武汉大学 一种三维空间方位感知敏感度的测试装置及方法
US9288603B2 (en) 2012-07-15 2016-03-15 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for backward-compatible audio coding
US9473870B2 (en) 2012-07-16 2016-10-18 Qualcomm Incorporated Loudspeaker position compensation with 3D-audio hierarchical coding
CN102932730B (zh) * 2012-11-08 2014-09-17 武汉大学 一种正四面体结构的扬声器组声场效果增强方法及系统
EP2733964A1 (fr) * 2012-11-15 2014-05-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Réglage par segment de signal audio spatial sur différents paramétrages de haut-parleur de lecture
US9913064B2 (en) 2013-02-07 2018-03-06 Qualcomm Incorporated Mapping virtual speakers to physical speakers
US9685163B2 (en) 2013-03-01 2017-06-20 Qualcomm Incorporated Transforming spherical harmonic coefficients

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9103207D0 (en) * 1991-02-15 1991-04-03 Gerzon Michael A Stereophonic sound reproduction system
US5757927A (en) * 1992-03-02 1998-05-26 Trifield Productions Ltd. Surround sound apparatus
JPH08130793A (ja) * 1994-11-01 1996-05-21 Mitsubishi Electric Corp 音響再生装置
JPH1118199A (ja) * 1997-06-26 1999-01-22 Nippon Columbia Co Ltd 音響処理装置
AU6400699A (en) * 1998-09-25 2000-04-17 Creative Technology Ltd Method and apparatus for three-dimensional audio display

Also Published As

Publication number Publication date
JP2003531555A (ja) 2003-10-21
JP4861593B2 (ja) 2012-01-25
AU2000280030A1 (en) 2001-11-07
WO2001082651A1 (fr) 2001-11-01
EP1275272A1 (fr) 2003-01-15
EP1275272B1 (fr) 2012-11-21
CN1452851A (zh) 2003-10-29

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued