A enhancement layer encoder/decoder for improving a voice quality in G.711 codec and method therefor

摘要

The present invention discloses for the enhancement layer coding / decoding for reducing the quantization error of a G.711 codec. And then on the basis of the index information of each of the samples of the frame calculating index index of the additional mantissa information of each sample, the index index is sequentially one bit to the samples containing the index index is lower values ​​from the samples containing a value to perform assigned by repeating the process for a certain number of times and then identified the number of bits allocated for each sample, one of the bits of each sample added the singer information, and outputs the most significant bit corresponding to the number of bits assigned to each sample.