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Pub. No.:    WO/2009/142464    International Application No.:    PCT/KR2009/002743
Publication Date: 26.11.2009 International Filing Date: 25.05.2009
G10L 19/04 (2006.01)
Applicants: LG ELECTRONICS INC. [KR/KR]; 20 Yeouido-dong, Yeongdeungpo-gu Seoul 150-721 (KR) (For All Designated States Except US).
INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY [KR/KR]; Yonsei University 134 Sinchon-dong, Seodaemoon-gu Seoul 120-749 (KR) (For All Designated States Except US).
OH, Hyen O [KR/KR]; (KR) (For US Only).
LEE, Chang Heon [KR/KR]; (KR) (For US Only).
SONG, Jeongook [KR/KR]; (KR) (For US Only).
JUNG, Yang Won [KR/KR]; (KR) (For US Only).
KANG, Hong Goo [KR/KR]; (KR) (For US Only)
Inventors: OH, Hyen O; (KR).
LEE, Chang Heon; (KR).
SONG, Jeongook; (KR).
JUNG, Yang Won; (KR).
KANG, Hong Goo; (KR)
Agent: KIM, Yong In; (KR)
Priority Data:
61/055,465 23.05.2008 US
61/078,774 08.07.2008 US
10-2009-0044623 21.05.2009 KR
(KO) 오디오 신호 처리 방법 및 장치
Abstract: front page image
(EN)Disclosed is a method for processing audio signals. The method comprises the steps of: receiving long-term prediction information and a residual; performing an inverse-frequency-conversion for the residual to generate a synthetic residual; and performing a long-term synthesis based on the synthetic residual and the long-term prediction information to generate the synthetic audio signal of a current frame. The long-term prediction information includes the final gain and the final delay. The range of the final delay starts at 0, and the long-term synthesis is performed based on the synthetic audio signals of the frames including previous frames.
(FR)L'invention concerne un procédé de traitement d'un signal audio. Le procédé comprend les étapes consistant à: recevoir des données de prédiction à long terme et une valeur résiduelle; mettre en œuvre une conversion de fréquence inverse sur la valeur résiduelle pour produire une valeur résiduelle de synthèse; et mettre en œuvre une synthèse à long terme sur la base de la valeur résiduelle de synthèse et des données de prédiction à long terme afin de produire le signal audio de synthèse d'une trame en cours. Les données de prédiction à long terme comprennent le gain final et le retard final. La plage du retard final commence à 0, et la synthèse à long terme est mise en œuvre sur la base des signaux audio de synthèse des trames, y compris les trames précédentes.
(KO)레지듀얼 및 롱텀 예측정보를 수신하는 단계; 상기 레지듀얼에 대해 역 주파수 변환을 수행하여 합성 레지듀얼을 생성하는 단계; 및, 상기 합성 레지듀얼 및 상기 롱텀 예측정보를 근거로 롱텀 합성을 수행하여, 현재 프레임의 합성 오디오 신호를 생성하는 단계를 포함하고,상기 롱텀 예측 정보는, 최종 게인 및 최종 지연을 포함하고,상기 최종 지연의 범위는 0부터이고, 상기 롱텀 합성은 이전 프레임을 포함하는 프레임의 합성 오디오 신호를 근거로 수행되는 오디오 신호 처리 방법이 개시된다.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, 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, 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, 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, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Korean (KO)
Filing Language: Korean (KO)