Title :
A method of optimizing codebook based on codeword use frequency
Author :
Gang, Zhang ; Xueying, Zhang ; Yanxi, Qiao
Author_Institution :
Taiyuan Univ. of Technol., China
Abstract :
The paper presents the use of codeword use frequency (CUF) to indicate codebook performance in a CELP coder and a method of optimizing the codebook on basis of it. Having tested the ITU-T G.728 algorithm using the method we find that it is possible to further decrease the code rate. The primary experiment obtains some fairly good results
Keywords :
linear predictive coding; optimisation; speech coding; table lookup; CELP coder; ITU-T G.728 algorithm; code rate decrease; codebook performance; codeword use frequency; optimization; speech coding; Bit rate; Encoding; Frequency; Optimization methods; Pulse shaping methods; Redundancy; Shape; Speech synthesis; Testing; Vector quantization;
Conference_Titel :
Signal Processing Proceedings, 1998. ICSP '98. 1998 Fourth International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4325-5
DOI :
10.1109/ICOSP.1998.770271
