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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)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20
Signal processing not specific to the method of recording or reproducing; Circuits therefor
10
Digital recording or reproducing
Applicants:
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE [KR/KR]; 161 Gajeong-dong Yuseong-gu Daejeon 305-350, KR (AllExceptUS)
SEO, Jeong Il [KR/KR]; KR (UsOnly)
KANG, Kyeong Ok [KR/KR]; KR (UsOnly)
HONG, Jin Woo [KR/KR]; KR (UsOnly)
KIM, Kwang Ki [KR/KR]; KR (UsOnly)
BEACK, Seung Kwon [KR/KR]; KR (UsOnly)
HAHN, Min Soo [KR/KR]; KR (UsOnly)
CHON, Sang Bae [KR/KR]; KR (UsOnly)
SUNG, Koeng Mo [KR/KR]; KR (UsOnly)
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:
10-2005-006551519.07.2005KR
10-2005-009625612.10.2005KR
10-2006-006682218.07.2006KR
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:
(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.
front page image
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 (ARIPO) (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)
Also published as:
EP1905034JP2009502086CN101223598IN4847/KOLNP/2007