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1. (WO2010028299) NOISE-FEEDBACK FOR SPECTRAL ENVELOPE QUANTIZATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2010/028299    International Application No.:    PCT/US2009/056113
Publication Date: 11.03.2010 International Filing Date: 04.09.2009
IPC:
G10L 19/00 (2006.01)
Applicants: HUAWEI TECHNOLOGIES CO., LTD. [CN/CN]; Intellectual Property Department Building B1, Huawei Industrial Base, Bantian, Longgang District Shenzhen, Guangdong 518129 (CN) (For All Designated States Except US).
GAO, Yang [US/US]; (US) (For US Only)
Inventors: GAO, Yang; (US)
Agent: MATSIL, Ira S.; (US)
Priority Data:
61/094,882 06.09.2008 US
Title (EN) NOISE-FEEDBACK FOR SPECTRAL ENVELOPE QUANTIZATION
(FR) RÉTROACTION DE BRUIT POUR QUANTIFICATION D'ENVELOPPE SPECTRALE
Abstract: front page image
(EN)A method of transmitting an input audio signal (32) is disclosed. A current spectral magnitude of the input audio signal (32) is quantized. A quantization error of a previous spectral magnitude is fed back to influence quantization of the current spectral magnitude. The feeding back includes adaptively modifying a quantization criterion to form a modified quantization criterion. A current quantization error is minimized by using the modified quantization criterion. A quantized spectral envelope is formed based on the minimizing and the quantized spectral envelope is transmitted.
(FR)L'invention concerne un procédé de transmission d'un signal audio d'entrée (32). L'intensité spectrale courante du signal audio d'entrée (32) est quantifiée. Une erreur de quantification de l'intensité spectrale précédente est utilisée en rétroaction pour influencer la quantification de l'intensité spectrale courante. La rétroaction inclut de modifier de manière adaptative un critère de quantification pour former un critère de quantification modifié. L'erreur de quantification courante est minimisée en utilisant le critère de quantification modifié. Une enveloppe spectrale quantifiée est formée sur la base de la minimisation et l'enveloppe spectrale quantifiée est transmise.
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, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, 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, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, 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)