WO2005015954A3 - Procede et dispositif de traitement de donnees sonores en contexte ambiophonique - Google Patents

Procede et dispositif de traitement de donnees sonores en contexte ambiophonique Download PDF

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Publication number
WO2005015954A3
WO2005015954A3 PCT/FR2004/002009 FR2004002009W WO2005015954A3 WO 2005015954 A3 WO2005015954 A3 WO 2005015954A3 FR 2004002009 W FR2004002009 W FR 2004002009W WO 2005015954 A3 WO2005015954 A3 WO 2005015954A3
Authority
WO
WIPO (PCT)
Prior art keywords
audio data
processing audio
ambisonic
context
components
Prior art date
Application number
PCT/FR2004/002009
Other languages
English (en)
Other versions
WO2005015954A2 (fr
Inventor
Jerome Daniel
Sebastien Moreau
Original Assignee
France Telecom
Jerome Daniel
Sebastien Moreau
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 France Telecom, Jerome Daniel, Sebastien Moreau filed Critical France Telecom
Publication of WO2005015954A2 publication Critical patent/WO2005015954A2/fr
Publication of WO2005015954A3 publication Critical patent/WO2005015954A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/027—Spatial or constructional arrangements of microphones, e.g. in dummy heads
    • 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 
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

La présente invention concerne le traitement de signaux captés pour obtenir des composantes ambiophoniques. Cette opération (1), dite de matriçage, est effectuée en appliquant une matrice à ces signaux captés qui est corrigée pour préserver une orthonormalité entre les harmoniques ambiophoniques et, de là, minimiser un effet de repliement de composantes ambiophoniques sur des composantes en cours d'estimation.
PCT/FR2004/002009 2003-07-30 2004-07-27 Procede et dispositif de traitement de donnees sonores en contexte ambiophonique WO2005015954A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0309388A FR2858512A1 (fr) 2003-07-30 2003-07-30 Procede et dispositif de traitement de donnees sonores en contexte ambiophonique
FR03/09388 2003-07-30

Publications (2)

Publication Number Publication Date
WO2005015954A2 WO2005015954A2 (fr) 2005-02-17
WO2005015954A3 true WO2005015954A3 (fr) 2008-07-24

Family

ID=34043677

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2004/002009 WO2005015954A2 (fr) 2003-07-30 2004-07-27 Procede et dispositif de traitement de donnees sonores en contexte ambiophonique

Country Status (2)

Country Link
FR (1) FR2858512A1 (fr)
WO (1) WO2005015954A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006053919A1 (de) 2006-10-11 2008-04-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Erzeugen einer Anzahl von Lautsprechersignalen für ein Lautsprecher-Array, das einen Wiedergaberaum definiert
EP2182744B1 (fr) 2008-10-30 2011-09-07 Deutsche Telekom AG Retransmission d'un champ sonore dans une zone de sonorisation ciblée
EP2469892A1 (fr) 2010-09-15 2012-06-27 Deutsche Telekom AG Reproduction d'un champ sonore dans une zone de sonorisation ciblée
EP2879408A1 (fr) 2013-11-28 2015-06-03 Thomson Licensing Procédé et appareil pour codage et décodage ambisonique d'ordre supérieur au moyen d'une décomposition de valeur singulière
US9838819B2 (en) * 2014-07-02 2017-12-05 Qualcomm Incorporated Reducing correlation between higher order ambisonic (HOA) background channels
CN112218211B (zh) * 2016-03-15 2022-06-07 弗劳恩霍夫应用研究促进协会 用于生成声场描述的装置、方法或计算机程序
FR3050601B1 (fr) * 2016-04-26 2018-06-22 Arkamys Procede et systeme de diffusion d'un signal audio a 360°
FR3074584A1 (fr) 2017-12-05 2019-06-07 Orange Traitement de donnees d'une sequence video pour un zoom sur un locuteur detecte dans la sequence

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5757927A (en) * 1992-03-02 1998-05-26 Trifield Productions Ltd. Surround sound apparatus
EP0966179A2 (fr) * 1998-06-20 1999-12-22 Central Research Laboratories Limited Méthode de synthétisation d'un signal acoustique
WO2003061336A1 (fr) * 2002-01-11 2003-07-24 Mh Acoustics, Llc Systeme audio base sur au moins des faisceaux propres de second ordre

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5757927A (en) * 1992-03-02 1998-05-26 Trifield Productions Ltd. Surround sound apparatus
EP0966179A2 (fr) * 1998-06-20 1999-12-22 Central Research Laboratories Limited Méthode de synthétisation d'un signal acoustique
WO2003061336A1 (fr) * 2002-01-11 2003-07-24 Mh Acoustics, Llc Systeme audio base sur au moins des faisceaux propres de second ordre

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GERZON M A: "AMBISONICS IN MULTICHANNEL BROADCASTING AND VIDEO", JOURNAL OF THE AUDIO ENGINEERING SOCIETY, AUDIO ENGINEERING SOCIETY. NEW YORK, US, vol. 33, no. 11, November 1985 (1985-11-01), pages 859 - 871, XP000794618, ISSN: 0004-7554 *
MEYER J ET AL: "A highly scalable spherical microphone array based on an orthonormal decomposition of the soundfield", 2002 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING. PROCEEDINGS (CAT. NO.02CH37334), PROCEEDINGS OF INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (CASSP'02), ORLANDO, FL, USA, 13-17 MAY 2002, 2002, 2002, Piscataway, NJ, USA, IEEE, USA, pages II - 1781-4 vol.2, XP002285176, ISBN: 0-7803-7402-9 *

Also Published As

Publication number Publication date
FR2858512A1 (fr) 2005-02-04
WO2005015954A2 (fr) 2005-02-17

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