G - Physics
10
L
G10L 19/10 (2006.01) G10L 19/00 (2006.01)
Patent
CA 2202825
An excitation quantizer 60 in a speech encoder includes a divider, which divides M pulses representing in combination a speech signal into groups each of L pulses, L being smaller than M. The amplitude of pulses, i.e., L pulses as each unit, is quantized, using spectral parameter. The quantization is executed on at least one quantization candidate, which is selected through distortion evaluation made through addition of the evaluation value based on an adjacent group quantization candidate output value and the evaluation value based on the pertinent group quantization value.
Quantificateur d'excitation 60 d'un codeur vocal. Comprend un diviseur, qui divise M impulsions composant un signal vocal en groupes de L impulsions, L étant plus petit que M. L'amplitude des impulsions, c.-à-d., L impulsions par unité, est quantifiée au moyen d'un paramètre spectral. La quantification est exécutée sur au moins un candidat de quantification, lequel est choisi au moyen d'une évaluation de distorsion qui combine : la valeur d'évaluation basée sur la valeur de sortie d'un candidat de quantification d'un groupe adjacent; et la valeur d'évaluation basée sur la valeur de quantification du groupe pertinent.
Corporation Nec
Smart & Biggar
LandOfFree
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