Audio encoding with different coding frame lengths

G - Physics – 10 – L

Patent

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G10L 19/02 (2006.01)

Patent

CA 2566368

The invention relates to a method for supporting an encoding of an audio signal, wherein at least one section of the audio signal is to be encoded with a coding model that allows the use of different coding frame lengths. In order to enable a simple selection of the respectively best suited coding frame length, it is proposed that at least one control parameter is determined based on signal characteristics of the audio signal. The control parameter is then used for limiting the options of possible coding frame lengths for the at least one section. The invention relates equally to a module 10,11 in which this method is implemented, to a device 1 and a system comprising such a module 10,11, and to a software program product including a software code for realizing the proposed method.

Cette invention se rapporte à un procédé qui permeT de prendre en charge le codage d'un signal audio et dans lequel au moins une section du signal audio doit être codée avec un modèle de codage permettant d'utiliser différentes longueurs de trames de codage. Pour permettre une sélection simple de la longueur de trame de codage respectivement la plus appropriée, on propose qu'au moins un paramètre de commande soit déterminé sur la base des caractéristiques du signal audio. Ce paramètre de commande sert ensuite à limiter les options de longueurs de trames de codage possibles pour ladite section ou pour lesdites sections. Cette invention concerne également un module (10, 11) dans lequel ce procédé est réalisé, un dispositif (1) et un système comprenant un tel module (10, 11), et un produit-programme logiciel contenant un code logiciel permettant de réaliser le procédé ainsi proposé.

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