| 摘要 |
<p>The method of the invention includes determining the coding domain by surrounding in an envelope the cluster of points of the autocorrelation matrix of the reflection coefficients (Ki, LARi) of the voice path modelling filter, determining (3) the main co-ordinate axes of the volume of points inside the envelope, projecting (4) the autocorrelation matrix coefficients on the main co-ordinate axes, dividing the inner volume of the envelope into elementary volumes, and coding the resulting coefficients on the basis of their co-ordinates in the space defined by the main axes of the volume of the points inside the envelope by assigning as code values only those values corresponding to the locations of the elementary volumes in which they are found. The invention is useful for linear prediction vocoders.</p> |
