Method, device, and systems for determining a masking level...

Details Method, device, and systems for determining a masking level... Method, device, and systems for determining a masking level...

G - Physics

10

L

G10L 19/02 (2006.01)

Patent

CA 2176485

The masking level for a particular subband in a subband audio encoder is efficiently calculated by the present invention. The step is calculating a signal level for each of the subbands based on an audio frame (102). Then, the masking level is calculated for the particular subband based on the signal levels, an offset function, and a weighting function (104).

Le niveau de masquage d'une sous-bande particulière d'un codeur audio à sous-bandes peut facilement se calculer à l'aide de la présente invention. La première étape consiste à calculer le niveau du signal pour chacune des sous-bandes sur la base d'une représentation audio (102). Puis le niveau de masquage est calculé pour la sous-bande particulière sur la base du niveau du signal, d'une fonction de compensation et d'une fonction de pondération.

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