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1. (WO2006091139) ADAPTIVE BIT ALLOCATION FOR MULTI-CHANNEL AUDIO ENCODING
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2006/091139    International Application No.:    PCT/SE2005/002033
Publication Date: 31.08.2006 International Filing Date: 22.12.2005
IPC:
H04B 1/66 (2006.01), G10L 19/00 (2006.01)
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE/SE]; S-164 83 Stockholm (SE) (For All Designated States Except US).
TALEB, Anisse [SE/SE]; (SE) (For US Only).
ANDERSSON, Stefan [SE/SE]; (SE) (For US Only)
Inventors: TALEB, Anisse; (SE).
ANDERSSON, Stefan; (SE)
Agent: AROS PATENT AB; P.O. Box 1544, S-751 45 Uppsala (SE)
Priority Data:
60/654956 23.02.2005 US
Title (EN) ADAPTIVE BIT ALLOCATION FOR MULTI-CHANNEL AUDIO ENCODING
(FR) ATTRIBUTION ADAPTATIVE DE BITS POUR LE CODAGE AUDIO A CANAUX MULTIPLES
Abstract: front page image
(EN)The invention provides a highly efficient technique for encoding a multi-channel audio signal. The invention relies on the basic principle of encoding a first signal representation of one or more of the multiple channels in a first encoder (130) and encoding a second signal representation of one or more of the multiple channels in a second, multi-stage, encoder (140). This procedure is significantly enhanced by providing a controller (150) for adaptively allocating a number of encoding bits among the different encoding stages of the second, multi-stage, encoder (140) in dependence on multi-channel audio signal characteristics.
(FR)L'invention concerne une technique très efficace de codage d'un signal audio à canaux multiples. Cette invention repose sur le principe de base de codage d'une première représentation de signaux d'au moins un des canaux multiples dans un premier codeur (130) et de codage d'une seconde représentation de signaux d'au moins un des canaux multiples dans un second codeur à étapes multiples (140). Ce procédé est amélioré de manière significative au moyen d'une unité de commande (150) afin d'attribuer de manière adaptative un certain nombre de bits de codage parmi différentes étapes de codage du second codeur à étapes multiples (140) en fonction des caractéristiques du signal audio à canaux multiples.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, 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)