Voice coder and a method for searching codebooks

Details Voice coder and a method for searching codebooks Voice coder and a method for searching codebooks

G - Physics

10

L

G10L 19/12 (2006.01) G10L 19/02 (2006.01) G10L 19/00 (2006.01) G10L 9/00 (1995.01) G10L 9/18 (1995.01)

Patent

CA 2137756

After dividing voice signals into subframes, the voice coder of the present invention calculates auditory sense masking threshold values for each subframe with a masking threshold value calculating circuit, and transforms the auditory sense masking threshold values to auditory sense weighting filter coefficients. An auditory sense weighting circuit performs auditory sense weighting to the signals using the auditory sense weighting filter coefficients and searches excitation codebooks or multipulses using auditory sense weighted signals.

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