Patent
1994-12-12
1997-05-27
MacDonald, Allen R.
395 232, 395 23, G10L 900
Patent
active
056339801
ABSTRACT:
After dividing voice signals into subframes, a voice coder 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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Chawan Vijay B.
MacDonald Allen R.
NEC Corporation
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