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1. (WO2017153697) OPTIMIZED CODING AND DECODING OF SPATIALIZATION INFORMATION FOR THE PARAMETRIC CODING AND DECODING OF A MULTICHANNEL AUDIO SIGNAL
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Pub. No.: WO/2017/153697 International Application No.: PCT/FR2017/050547
Publication Date: 14.09.2017 International Filing Date: 10.03.2017
IPC:
G10L 19/008 (2013.01)
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
L
SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19
Speech or audio signal 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
04
using predictive techniques
08
Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
Applicants:
ORANGE [FR/FR]; 78 rue Olivier de Serres 75015 Paris, FR
Inventors:
FATUS, Bertrand; FR
RAGOT, Stéphane; FR
EMERIT, Marc; FR
Agent:
ORANGE IMT/OLPS/IPL/PATENTS; FROGER Marie-Hélène Orange Gardens - 44 avenue de la République - CS 50010 92326 Chatillon Cedex, FR
Priority Data:
165203410.03.2016FR
Title (EN) OPTIMIZED CODING AND DECODING OF SPATIALIZATION INFORMATION FOR THE PARAMETRIC CODING AND DECODING OF A MULTICHANNEL AUDIO SIGNAL
(FR) CODAGE ET DÉCODAGE OPTIMISÉ D'INFORMATIONS DE SPATIALISATION POUR LE CODAGE ET LE DÉCODAGE PARAMÉTRIQUE D'UN SIGNAL AUDIO MULTICANAL
Abstract:
(EN) The invention pertains to a method of parametric coding of a multichannel digital audio signal comprising a step (312) of coding a signal (M) arising from a channels reduction processing (307) applied to the multichannel signal and of coding spatialization information of the multichannel signal. The method is such that it comprises the following steps: - extraction (314, 320) of a plurality of items of spatialization information of the multichannel signal; - obtaining (315, 317) of at least one representation model of the extracted spatialization information; - determination (315, 411) of at least one angle parameter of a model obtained; - coding (316, 318) of the at least one determined angle parameter so as to code the spatialization information extracted during the coding of spatialization information. The invention also pertains to a method for decoding such a coded signal and corresponding coding and decoding devices.
(FR) L'invention se rapporte à un procédé de codage paramétrique d'un signal audionumérique multicanal comportant une étape de codage (312) d'un signal (M) issu d'un traitement de réduction de canaux (307) appliqué au signal multicanal et de codage d'informations de spatialisation du signal multicanal. Le procédé est tel qu'il comporte les étapes suivantes : - extraction (314, 320) d'une pluralité d'informations de spatialisation du signal multicanal; - obtention (315, 317) d'au moins un modèle de représentation des informations de spatialisation extraites; - détermination (315, 411) d'au moins un paramètre d'angle d'un modèle obtenu; - codage (316, 318) du au moins un paramètre d'angle déterminé pour coder les informations de spatialisations extraite lors du codage d'informations de spatialisation. L'invention se rapporte également à un procédé de décodage d'un tel signal codé et des dispositifs de codage et de décodage correspondants.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)