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Machine translation
1. (WO2007011157) VIRTUAL SOURCE LOCATION INFORMATION BASED CHANNEL LEVEL DIFFERENCE QUANTIZATION AND DEQUANTIZATION METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/011157    International Application No.:    PCT/KR2006/002824
Publication Date: 25.01.2007 International Filing Date: 19.07.2006
IPC:
G11B 20/10 (2006.01)
Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE [KR/KR]; 161 Gajeong-dong, Yuseong-gu, Daejeon 305-350 (KR) (For All Designated States Except US).
SEO, Jeong Il [KR/KR]; (KR) (For US Only).
KANG, Kyeong Ok [KR/KR]; (KR) (For US Only).
HONG, Jin Woo [KR/KR]; (KR) (For US Only).
KIM, Kwang Ki [KR/KR]; (KR) (For US Only).
BEACK, Seung Kwon [KR/KR]; (KR) (For US Only).
HAHN, Min Soo [KR/KR]; (KR) (For US Only).
CHON, Sang Bae [KR/KR]; (KR) (For US Only).
SUNG, Koeng Mo [KR/KR]; (KR) (For US Only)
Inventors: SEO, Jeong Il; (KR).
KANG, Kyeong Ok; (KR).
HONG, Jin Woo; (KR).
KIM, Kwang Ki; (KR).
BEACK, Seung Kwon; (KR).
HAHN, Min Soo; (KR).
CHON, Sang Bae; (KR).
SUNG, Koeng Mo; (KR)
Agent: SHIN, Young Moo; Ace Tower 4th Floor 1-170, Soonhwa-dong, Chung-gu, Seoul 100-130 (KR)
Priority Data:
10-2005-0065515 19.07.2005 KR
10-2005-0096256 12.10.2005 KR
10-2006-0066822 18.07.2006 KR
Title (EN) VIRTUAL SOURCE LOCATION INFORMATION BASED CHANNEL LEVEL DIFFERENCE QUANTIZATION AND DEQUANTIZATION METHOD
(FR) PROCEDE DE QUANTIFICATION ET DE DEQUANTIFICATION DE LA DIFFERENCE DE NIVEAUX DE CANAL BASEE SUR LES INFORMATIONS DE LOCALISATION DE SOURCES VIRTUELLES
Abstract: front page image
(EN)Methods for Spatial Audio Coding (SAC) of a multi-channel audio signal and decoding of an audio bitstream generated by the SAC are provided. More particularly, methods of efficient quantization and dequantization of Channel Level Difference (CLD) used as a spatial parameter when SAC -based encoding of a multi-channel audio signal is performed are provided. A method of CLD quantization includes extracting sub-band-specific CLDs from an N-channel audio signal (N>1), and quantizing the CLDs by reference to a Virtual Source Location Information (VSLI)-based CLD quantization table designed using CLD quantization values derived from VSLI quantization values of the N-channel audio signal.
(FR)L'invention concerne des procédés de codage audio spatial (SAC) d'un signal audio et de décodage multicanaux d'un flux binaire audio générés par le SAC. L'invention concerne en particulier, des procédés efficaces de quantification et de déquantification de la différence de niveau des canaux (CLD) utilisée comme paramètre spatial lors du codage basé sur SAC d'un signal audio multicanaux. L'invention concerne aussi un procédé de quantification de CLD, y compris l'extraction des CLD spécifiques aux sous-bandes depuis un signal audio à N canaux (N>1) et la quantification des CLD par référence à une table de quantification basée sur les informations de localisation de sources virtuelles (VSLI), qui utilise des valeurs de quantification CLD dérivées à partir des valeurs de quantification de VSLI du signal audio à N canaux.
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, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KZ, LA, 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, RS, RU, SC, SD, SE, SG, SK, SL, SM, 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, 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: Korean (KO)