G - Physics – 10 – L
Patent
G - Physics
10
L
G10L 21/02 (2006.01) G10L 19/02 (2006.01)
Patent
CA 2464408
A wideband, high quality audio signal is decoded with few calculations at a low bitrate. Unwanted spectrum components accompanying sinusoidal signal injection by a synthesis subband filter built with real-value operations are suppressed by inserting a suppression signal to subbands adjacent to the subband to which the sine wave is injected. This makes it possible to inject a desired sinusoid with few calculations.
Un signal audio haute qualité, large bande, est décodé au moyen de peu de calculs à un faible débit de bits. Des composants indésirables du spectre accompagnant l'injection de signaux sinusoïdaux par synthèse à filtre sous-bande effectuée au moyen d'opérations en valeur réelle, sont supprimés par insertion d'un signal de suppression aux sous-bandes adjacentes à la sous-bande à laquelle l'onde sinusoïdale est injectée. L'invention permet ainsi d'injecter une sinusoïde désirée avec peu de calculs.
Chong Kok Seng
Hann Kuah Kim
Hong Neo Sua
Nomura Toshiyuki
Norimatsu Takeshi
Corporation Nec
Gowling Lafleur Henderson Llp
Matsushita Electric Industrial Co. Ltd.
Panasonic Corporation
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