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1. (WO2012176084) AUDIO SIGNAL PROCESSOR FOR PROCESSING ENCODED MULTI - CHANNEL AUDIO SIGNALS AND METHOD THEREFOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2012/176084 International Application No.: PCT/IB2012/052795
Publication Date: 27.12.2012 International Filing Date: 04.06.2012
IPC:
H04S 3/00 (2006.01) ,G10L 19/00 (2013.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
S
STEREOPHONIC SYSTEMS
3
Systems employing more than two channels, e.g. quadraphonic
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
Applicants:
KONINKLIJKE PHILIPS N.V. [NL/NL]; High Tech Campus 5 NL-5656 AE Eindhoven, NL (AllExceptUS)
HÄRMÄ, Aki, Sakari [FI/NL]; NL (UsOnly)
OOMEN, Arnoldus, Werner, Johannes [NL/NL]; NL (UsOnly)
Inventors:
HÄRMÄ, Aki, Sakari; NL
OOMEN, Arnoldus, Werner, Johannes; NL
Agent:
COOPS, Peter; Philips IP&S - NL High Tech Campus 44 NL-5656 AE Eindhoven, NL
Priority Data:
11171280.824.06.2011EP
Title (EN) AUDIO SIGNAL PROCESSOR FOR PROCESSING ENCODED MULTI - CHANNEL AUDIO SIGNALS AND METHOD THEREFOR
(FR) PROCESSEUR DE SIGNAL AUDIO POUR TRAITER DES SIGNAUX AUDIO MULTICANAL CODÉS ET PROCÉDÉ ASSOCIÉ
Abstract:
(EN) An audio signal processor receives a plurality of encoded multi-channel audio signals. A multi-channel decoder (105) decodes a first encoded multi-channel signal to generate a first decoded multi-channel signal. A generator (109) generates an encoded further audio signal by selecting audio encoding data from at least a second encoded multi-channel audio signal such that a number of channels of the encoded further audio signal comprising audio encoding data from the second encoded multi-channel audio signal is less than a number of channels in the second encoded multi-channel signal. Thus, a channel reduction is performed in the encoded data domain. A further decoder (111) generates a further decoded signal by decoding the further encoded audio signal. A combiner (107) combines the first decoded multi-channel signal and the further decoded signal to generate a multi-channel output signal. An exciting user experience can be provided while maintaining low complexity and resource usage.
(FR) L'invention porte sur un processeur de signal audio qui reçoit une pluralité de signaux audio multicanal codés. Un décodeur multicanal (105) décode un premier signal multicanal codé afin de générer un premier signal multicanal décodé. Un générateur (109) génère un signal audio supplémentaire codé par sélection de données de codage audio dans au moins un second signal audio multicanal codé de telle sorte qu'un nombre de canaux du signal audio supplémentaire codé comprenant des données de codage audio issus du second signal audio multicanal codé est inférieur à un nombre de canaux dans le second signal multicanal codé. Ainsi, une réduction de canaux a été effectuée dans le domaine des données codées. Un décodeur supplémentaire (111) génère un signal décodé supplémentaire par décodage du signal audio codé supplémentaire. Un combineur (107) combine le premier signal multicanal décodé et le signal décodé supplémentaire afin de générer un signal de sortie multicanal. Une expérience utilisateur excitante peut être offerte tout en conservant une faible complexité et une faible consommation de ressources.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, 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, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP2724555US20140133661JP2014520473CN103620673RU0002595910BR112013032727
IN9992/CHENP/2013