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 PDFInfo
- 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
Links
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
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.
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)
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 |
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 |
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 |
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 |
KR101024924B1 (ko) * | 2008-01-23 | 2011-03-31 | 엘지전자 주식회사 | 오디오 신호의 처리 방법 및 이의 장치 |
EP2083585B1 (fr) | 2008-01-23 | 2010-09-15 | LG Electronics Inc. | Procédé et appareil de traitement de signal audio |
WO2009093866A2 (fr) | 2008-01-23 | 2009-07-30 | Lg Electronics Inc. | Appareil et procédé de traitement d'un signal audio |
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 |
GB2476747B (en) * | 2009-02-04 | 2011-12-21 | Richard Furse | Sound system |
KR102018824B1 (ko) * | 2010-03-26 | 2019-09-05 | 돌비 인터네셔널 에이비 | 오디오 재생을 위한 오디오 사운드필드 표현을 디코딩하는 방법 및 장치 |
CN103460285B (zh) | 2010-12-03 | 2018-01-12 | 弗劳恩霍夫应用研究促进协会 | 用于以几何为基础的空间音频编码的装置及方法 |
TWI792203B (zh) | 2011-07-01 | 2023-02-11 | 美商杜比實驗室特許公司 | 用於適應性音頻信號的產生、譯碼與呈現之系統與方法 |
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 |
US9959875B2 (en) | 2013-03-01 | 2018-05-01 | Qualcomm Incorporated | Specifying spherical harmonic and/or higher order ambisonics coefficients in bitstreams |
Family Cites Families (5)
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 |
-
2000
- 2000-10-06 JP JP2001578151A patent/JP4861593B2/ja not_active Expired - Lifetime
- 2000-10-06 CN CN 00819561 patent/CN1452851A/zh active Pending
- 2000-10-06 CA CA002406926A patent/CA2406926A1/fr not_active Abandoned
- 2000-10-06 WO PCT/US2000/027851 patent/WO2001082651A1/fr active Application Filing
- 2000-10-06 EP EP00970687A patent/EP1275272B1/fr not_active Expired - Lifetime
- 2000-10-06 AU AU2000280030A patent/AU2000280030A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
AU2000280030A1 (en) | 2001-11-07 |
JP4861593B2 (ja) | 2012-01-25 |
CN1452851A (zh) | 2003-10-29 |
JP2003531555A (ja) | 2003-10-21 |
EP1275272A1 (fr) | 2003-01-15 |
EP1275272B1 (fr) | 2012-11-21 |
WO2001082651A1 (fr) | 2001-11-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
FZDE | Discontinued |