WO2011086253A3 - Procede de codage/decodage d'un flux numerique stereo ameliore et dispositif de codage/decodage associe - Google Patents

Procede de codage/decodage d'un flux numerique stereo ameliore et dispositif de codage/decodage associe Download PDF

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Publication number
WO2011086253A3
WO2011086253A3 PCT/FR2010/052671 FR2010052671W WO2011086253A3 WO 2011086253 A3 WO2011086253 A3 WO 2011086253A3 FR 2010052671 W FR2010052671 W FR 2010052671W WO 2011086253 A3 WO2011086253 A3 WO 2011086253A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
encoding
decoding
hand
combined signal
Prior art date
Application number
PCT/FR2010/052671
Other languages
English (en)
Other versions
WO2011086253A2 (fr
Inventor
Frédéric AMADU
Thomas Esnault
Original Assignee
Arkamys
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 Arkamys filed Critical Arkamys
Priority to US13/518,993 priority Critical patent/US9111529B2/en
Priority to EP10801652A priority patent/EP2517199A2/fr
Publication of WO2011086253A2 publication Critical patent/WO2011086253A2/fr
Publication of WO2011086253A3 publication Critical patent/WO2011086253A3/fr

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form
    • 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
    • H04S2420/03—Application of parametric coding in stereophonic audio systems
    • 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
    • H04S2420/07—Synergistic effects of band splitting and sub-band processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Stereophonic System (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

L'invention concerne essentiellement un procédé d'encodage et de décodage d'un signal audio numérique composé d'un signal de son droit original (SDO) et d'un signal de son gauche original (SGO), caractérisé en ce qu'il comporte les étapes suivantes : on combine (3) le signal de son droit original (SDO) et le signal de son gauche original (SGO) pour obtenir un signal combiné (Sc) unique, on encode le signal combiné (SC) au moyen d'un encodeur (5) standard pour obtenir un signal combiné compressé (SCC), on décode le signal combiné compressé (SCC) au moyen d'un décodeur standard (8) pour obtenir un signal combiné décompressé (SCD), et après décodage, on génère, à partir du signal combiné décompressé (SCD), un signal de son droit restitué (SDR) et un signal de son gauche restitué (SGR) décorrélés l'un par rapport à l'autre. L'invention propose en outre un module (35) de génération des aiguës qui permet de recréer la composante haute fréquence (SHF) des signaux de son droit (SDR) ou gauche (SGR) qui a été supprimée suite à la compression.
PCT/FR2010/052671 2009-12-23 2010-12-10 Procede de codage/decodage d'un flux numerique stereo ameliore et dispositif de codage/decodage associe WO2011086253A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/518,993 US9111529B2 (en) 2009-12-23 2010-12-10 Method for encoding/decoding an improved stereo digital stream and associated encoding/decoding device
EP10801652A EP2517199A2 (fr) 2009-12-23 2010-12-10 Procede de codage/decodage d'un flux numerique stereo ameliore et dispositif de codage/decodage associe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0959547 2009-12-23
FR0959547A FR2954570B1 (fr) 2009-12-23 2009-12-23 Procede de codage/decodage d'un flux numerique stereo ameliore et dispositif de codage/decodage associe

Publications (2)

Publication Number Publication Date
WO2011086253A2 WO2011086253A2 (fr) 2011-07-21
WO2011086253A3 true WO2011086253A3 (fr) 2011-09-09

Family

ID=42236429

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2010/052671 WO2011086253A2 (fr) 2009-12-23 2010-12-10 Procede de codage/decodage d'un flux numerique stereo ameliore et dispositif de codage/decodage associe

Country Status (5)

Country Link
US (1) US9111529B2 (fr)
EP (1) EP2517199A2 (fr)
KR (1) KR20120109576A (fr)
FR (1) FR2954570B1 (fr)
WO (1) WO2011086253A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010108803A2 (fr) * 2009-03-25 2010-09-30 Endress+Hauser Conducta Gesellschaft Für Mess- Und Regeltechnik Mbh+Co. Kg Procédé et circuit de transfert de signaux par l'intermédiaire d'une boucle de courant
US9654868B2 (en) 2014-12-05 2017-05-16 Stages Llc Multi-channel multi-domain source identification and tracking
US9747367B2 (en) 2014-12-05 2017-08-29 Stages Llc Communication system for establishing and providing preferred audio
US10609475B2 (en) 2014-12-05 2020-03-31 Stages Llc Active noise control and customized audio system
US9508335B2 (en) 2014-12-05 2016-11-29 Stages Pcs, Llc Active noise control and customized audio system
US10945080B2 (en) 2016-11-18 2021-03-09 Stages Llc Audio analysis and processing system
US9980075B1 (en) 2016-11-18 2018-05-22 Stages Llc Audio source spatialization relative to orientation sensor and output
US9980042B1 (en) 2016-11-18 2018-05-22 Stages Llc Beamformer direction of arrival and orientation analysis system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6895093B1 (en) * 1998-03-03 2005-05-17 Texas Instruments Incorporated Acoustic echo-cancellation system
WO2006048227A1 (fr) * 2004-11-02 2006-05-11 Coding Technologies Ab Decodage de signaux audio multicanal a signaux decorreles
WO2006132857A2 (fr) * 2005-06-03 2006-12-14 Dolby Laboratories Licensing Corporation Appareil et procede permettant de coder des signaux audio a l'aide d'instructions de decodage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4991218A (en) * 1988-01-07 1991-02-05 Yield Securities, Inc. Digital signal processor for providing timbral change in arbitrary audio and dynamically controlled stored digital audio signals
US20100303245A1 (en) * 2009-05-29 2010-12-02 Stmicroelectronics, Inc. Diffusing acoustical crosstalk

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6895093B1 (en) * 1998-03-03 2005-05-17 Texas Instruments Incorporated Acoustic echo-cancellation system
WO2006048227A1 (fr) * 2004-11-02 2006-05-11 Coding Technologies Ab Decodage de signaux audio multicanal a signaux decorreles
WO2006132857A2 (fr) * 2005-06-03 2006-12-14 Dolby Laboratories Licensing Corporation Appareil et procede permettant de coder des signaux audio a l'aide d'instructions de decodage

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"INFORMATION TECHNOLOGY - CODING OF MOVING PICTURES AND ASSOCIATED AUDIO FOR DIGITAL STORAGE MEDIA AT UP TO ABOUT 1,5 -MBIT/S - PART 3: AUDIO//TECHNOLOGIES DE L'INFORMATION - CODAGE DE L'IMAGE ANIMEE ET DU SON ASSOCIE POUR LES SUPPORTS DE STOCKAGE NUMERI", INTERNATIONAL STANDARD ISO/IEC, XX, XX, no. 11172-03, 1 August 1993 (1993-08-01), pages 1 - 158, XP008050513 *
J-M VALIN: "Perceptually-Motivated Nonlinear Channel Decorrelation for Stereo Acoustic Echo Cancellation", HANDS-FREE SPEECH COMMUNICATION AND MICROPHONE ARRAYS, 2008. HSCMA 2008, IEEE, PISCATAWAY, NJ, USA, 6 May 2008 (2008-05-06), pages 188 - 191, XP031269778, ISBN: 978-1-4244-2337-8 *
PURNHAGEN, HEIKO; ENGDEGARD, JONAS; RODEN, JONAS; LILJERYD, LARS: "Synthetic Ambience in Parametric Stereo Coding", AES, 60 EAST 42ND STREET, ROOM 2520 NEW YORK 10165-2520, USA, 8 May 2004 (2004-05-08), XP040372403 *

Also Published As

Publication number Publication date
EP2517199A2 (fr) 2012-10-31
US20120275608A1 (en) 2012-11-01
KR20120109576A (ko) 2012-10-08
FR2954570B1 (fr) 2012-06-08
WO2011086253A2 (fr) 2011-07-21
FR2954570A1 (fr) 2011-06-24
US9111529B2 (en) 2015-08-18

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