Efficient implementation of perceptual postfilter for CELP coding of speech

被引：0
|
作者：
Chan, CF [1 ]
机构：
[1] City Univ Hong Kong, Dept Comp Engn & Informat Technol, Hong Kong, Hong Kong, Peoples R China
来源：
ELECTRONICS LETTERS | 2002年 / 38卷 / 24期
关键词：
D O I：
10.1049/el:20021061
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An efficient method to implement the perceptual posterfilter for the suppression of coding noise in CELP-coded speech is proposed. The method is based on approximating the response of an all-pole filter to the response of the pole-zero form postfilter via cepstrum processing. This all-pole postfilter can then be implemented more efficiently than the pole-zero postfilter with less computation and filter memory.
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页码：1604 / 1605
页数：2
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