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1. (WO2009059498) A SIGNAL PROCESS METHOD, PROCESS DEVICE AND AN AUDIO DECODER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/059498    International Application No.:    PCT/CN2008/070813
Publication Date: 14.05.2009 International Filing Date: 25.04.2008
IPC:
H04L 1/00 (2006.01)
Applicants: HUAWEI TECHNOLOGIES CO., LTD. [CN/CN]; Huawei Administration Building Bantian Longgang District Shenzhen Guangdong 518129 (CN) (For All Designated States Except US).
ZHAN, Wuzhou [CN/CN]; (CN) (For US Only).
WANG, Dongqi [CN/CN]; (CN) (For US Only).
TU, Yongfeng [CN/CN]; (CN) (For US Only).
WANG, Jing [CN/CN]; (CN) (For US Only).
ZHANG, Qing [CN/CN]; (CN) (For US Only).
MIAO, Lei [CN/CN]; (CN) (For US Only).
XU, Jianfeng [CN/CN]; (CN) (For US Only).
HU, Chen [CN/CN]; (CN) (For US Only).
YANG, Yi [CN/CN]; (CN) (For US Only).
DU, Zhengzhong [CN/CN]; (CN) (For US Only).
QI, Fengyan [CN/CN]; (CN) (For US Only)
Inventors: ZHAN, Wuzhou; (CN).
WANG, Dongqi; (CN).
TU, Yongfeng; (CN).
WANG, Jing; (CN).
ZHANG, Qing; (CN).
MIAO, Lei; (CN).
XU, Jianfeng; (CN).
HU, Chen; (CN).
YANG, Yi; (CN).
DU, Zhengzhong; (CN).
QI, Fengyan; (CN)
Agent: LEADER PATENT & TRADEMARK FIRM; 8F-6, Bldg. A, Winland International Center No. 32 Xizhimen North Street Haidian District, Beijing 100082 (CN)
Priority Data:
200710169616.1 05.11.2007 CN
Title (EN) A SIGNAL PROCESS METHOD, PROCESS DEVICE AND AN AUDIO DECODER
(FR) PROCÉDÉ DE TRAITEMENT DE SIGNAL, DISPOSITIF DE TRAITEMENT ET DÉCODEUR AUDIO
(ZH) 一种信号处理方法、处理装置以及语音解码器
Abstract: front page image
(EN)A signal process method, used for processing the compound signal in the lost packet concealment, includes the following steps, receiving a good frame next to the lost frame, achieving the good frame information and the energy ratio of the compound signal at the receiving time of the good frame; adjusting the compound signal according to the energy ratio. A signal process device and an audio decoder are also provided. Through using the method in the present invention, the compound signal is adjusted based on the energy ratio of the first good frame behind the lost frame and the compound signal to guarantee that the compound signal does not generate waveform or energy jumping at the joint point of the lost frame and the first frame behind the lost frame to realize the smooth transition of the waveform and to avoid the musical noise.
(FR)Procédé de traitement de signal utilisé pour traiter le signal composite dans le masquage de paquet perdu, qui englobe les opérations suivantes: réception d'une bonne trame immédiatement après la trame perdue, obtention d'informations sur la bonne trame et du rapport d'énergie du signal composite au moment de la réception de la bonne trame; réglage du signal composite en fonction du rapport d'énergie. L'invention concerne également un dispositif de traitement de signal et un décodeur audio. Grâce à l'emploi du procédé de la présente invention, le signal composite est réglé en fonction du rapport d'énergie de la bonne trame derrière la trame perdue, ce qui garantit que le signal composite ne génère pas de forme d'onde ou de saut d'énergie au point de liaison de la trame perdue et de la première trame derrière la trame perdue, ce qui procure une transition en douceur et évite le bruit musical.
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, 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, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, 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, 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: Chinese (ZH)
Filing Language: Chinese (ZH)