DocumentCode
1930888
Title
A CELP codebook and search technique using a Hopfield net
Author
Easton, M.G. ; Goodyear, C.C.
Author_Institution
Dept. of Electr. Eng. & Electron., Liverpool Univ., UK
fYear
1991
fDate
14-17 Apr 1991
Firstpage
685
Abstract
A ternary excitation codebook with a special structure for CELP (code-excited linear prediction) coding has been devised in which the main codebook is divided into several sub-codebooks. It is shown how a modified Hopfield neural net is capable of searching such a codebook and selecting a near-optimum code vector. Hence an algorithm is derived which offers considerable computational savings over previously proposed codebook methods. Results are presented demonstrating the performance of the net and the quality of the coded speech
Keywords
encoding; filtering and prediction theory; neural nets; search problems; speech analysis and processing; CELP coding; algorithm; code vector; code-excited linear prediction; coded speech; modified Hopfield neural net; search technique; speech coding; speech quality; subcodebooks; ternary excitation codebook; Assembly; Autocorrelation; Filters; Hopfield neural networks; Linear predictive coding; Neural networks; Speech; Transfer functions; Vectors;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location
Toronto, Ont.
ISSN
1520-6149
Print_ISBN
0-7803-0003-3
Type
conf
DOI
10.1109/ICASSP.1991.150432
Filename
150432
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