Audio coding apparatus and method thereof

Details Audio coding apparatus and method thereof Audio coding apparatus and method thereof

G - Physics

10

L

G10L 21/02 (2006.01) G10L 19/02 (2006.01)

Patent

CA 2704807

An encoder for encoding an audio signal. The encoder is configured to determine at least one characteristic of the audio signal; divide the audio signal into at least a low frequency portion and a high frequency portion, and generate from the high frequency portion a plurality of high frequency band signals dependent on the at least one characteristic of the audio signal. The encoder further determines for each of the plurality of high frequency band signals at least part of the low frequency portion which can represent the high frequency band signal.

L'invention concerne un codeur destiné à coder un signal audio. Le codeur est conçu pour déterminer au moins une caractéristique du signal audio, diviser le signal audio en au moins une partie basse fréquence et une partie haute fréquence, et générer de la partie haute fréquence une pluralité de signaux de bande de haute fréquence en fonction des caractéristiques du signal audio. Le codeur détermine en outre pour chacun des signaux de bande de haute fréquence au moins une partie de la partie basse fréquence susceptible de représenter le signal de bande de haute fréquence.

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