Method and apparatus for encoding and decoding an audio signal

Details Method and apparatus for encoding and decoding an audio signal Method and apparatus for encoding and decoding an audio signal

G - Physics

10

L

G10L 19/00 (2006.01)

Patent

CA 2613885

A method and apparatus for encoding and decoding an audio signal are provided. The present invention includes receiving an audio signal including a downmix signal and a spatial information signal, if a header is included in the spatial information signal, extracting configuration information from the header, extracting spatial information included in the spatial information signal, and converting the downmix signal to a multi-channel signal using the configuration information and the spatial information. Accordingly, the header can be selectively included in the spatial information signal, thereby if the header is plurally included in the spatial information signal, it is able to decode spatial information in case of reproducing the audio signal from a random point.

La présente invention se rapporte un procédé et à un appareil permettant de coder et de décoder un signal audio. L'invention consiste à recevoir un signal audio contenant un signal de mixage réducteur et un signal d'informations spatiales ; si le signal d'informations spatiales contient un en-tête, à extraire les informations de configuration de l'en-tête ; à extraire les informations spatiales contenues dans le signal d'informations spatiales ; et à convertir le signal de mixage réducteur en un signal multicanal à l'aide des informations de configuration et des informations spatiales. En conséquence, l'en-tête peut-être sélectivement inclus dans le signal d'informations spatiales, si bien que, si une pluralité d'en-têtes est incluse dans le signal d'informations spatiales, l'appareil selon l'invention peut décoder les informations spatiales lorsque le signal audio est reproduit à partir d'un point aléatoire.

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