Brevet : EP2991074 - PROCÉDÉ ET DISPOSITIF DE DÉCODAGE DE SIGNAUX
Titre
PROCÉDÉ ET DISPOSITIF DE DÉCODAGE DE SIGNAUX
N° et date de publication de la demande
EP2991074 - 02/03/2016
Type de la demande
A1
N° et date de dépôt
EP13886051.5 - 27/09/2013
N° et date de priorité
CN201310213593 - 31/05/2013
Classification CIB
Classification CPC
G10L 19/107 ; G10L 19/24 ; G10L 21/038 ; G10L 19/0204 ; G10L 19/107 ; G10L 19/24 ; G10L 21/038 ; G10L 19/0204 ; G10L 19/002 ; G10L 19/06 ; G10L 19/08
Famille de brevets
US2018166085A1 ; US2016086613A1 ; CN104217727A ; EP2991074A1 ; WO2014190649A1
Abrégé
Embodiments of the present invention provide a signal decoding method and device. The method includes: decoding a bit stream of a voice signal or an audio signal to acquire a decoded signal; predicting an excitation signal of an extension band according to the decoded signal, where the extension band is adjacent to a band of the decoded signal, and the band of the decoded signal is lower than the extension band; selecting a first band and a second band from the decoded signal, and predicting a spectral envelope of the extension band according to a spectral coefficient of the first band and a spectral coefficient of the second band; and determining a frequency-domain signal of the extension band according to the spectral envelope of the extension band and the excitation signal of the extension band. In the embodiments of the present invention, a spectral envelope and an excitation signal of an extension band are separately predicted according to a decoded signal obtained from a bit stream of a voice signal or an audio signal, so that a frequency-domain signal of the extension band of the voice or audio signal can be determined, and therefore performance of the voice or audio signal can be improved.
INTERVENANTS
Déposant
HUAWEI TECHNOLOGIES CO., LTD. - HUAWEI ADMINISTRATION BUILDING BANTIAN LONGGANG DISTRICT SHENZHEN, GUANGDONG 518129 - CN
Titulaire
Huawei Technologies Co., Ltd. - Huawei Administration Building Bantian Longgang District Shenzhen, Guangdong 518129 - CN
Inventeur
LIU, Zexin Shenzhen Guangdong 518129 - CN
MIAO, Lei Shenzhen Guangdong 518129 - CN
STATUT EN FRANCE
Délivrance
15/05/2019
Registre national des brevets (RNB)
27/11/2023 - N°0261145 - OO : Dérogation à la compétence de la Juridiction Unifiée du Brevet (BOPI 2024-01)
Dernière annuité payée
08/08/2024
Quantième- N° de l'annuité payée
12
Date de paiement de la prochaine annuité
30/09/2025