COMPLEXITY REDUCTION OF CELP SPEECH CODERS THROUGH THE USE OF PHASE INFORMATION

被引：1
|
作者：
RAMABADRAN, TV
LUECK, CD
机构：
[1] Department of Electrical and Computer Engineering, Iowa State University, Ames
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 1994年 / 42卷 / 2-4期
关键词：
D O I：
10.1109/TCOMM.1994.577024
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 search procedure for CELP coders is described. Based on the phase spectra of the codevectors and the ideal excitation vector, a subset of the codebook is preselected. This subset is then exhaustively searched to find the best, perhaps optimum, codevector. Computational savings of the order of 30-40 are achieved while still maintaining good output speech quality.
引用
收藏
页码：248 / 251
页数：4
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