Optimization strategy on G.723.1 speech coder algorithm: clustering analysis method and its application

Shutang Yang; Shengsheng Yu; Jingli Zhou

doi:10.1117/12.420835

22 March 2001 Optimization strategy on G.723.1 speech coder algorithm: clustering analysis method and its application

Shutang Yang, Shengsheng Yu, Jingli Zhou

Proceedings Volume 4209, Multimedia Systems and Applications III; (2001) https://doi.org/10.1117/12.420835
Event: Information Technologies 2000, 2000, Boston, MA, United States

Abstract

The algorithms of G.723.1 coder are analyzed and studied in this paper. Searching the large-sized codebook in this coder is still found to be time-consuming. Therefore, in order to speed up the code vector searching and optimize the algorithms, a new fast vector quantization method based on clustering analysis is put forward. The scheme of realizing the specific clustering analysis algorithm is described. Experiments and actual execution on G.723.1 coder show that its executive efficiency has been obviously improved by the optimization while its speech quality has little degradation.

Citation Download Citation

Shutang Yang, Shengsheng Yu, and Jingli Zhou "Optimization strategy on G.723.1 speech coder algorithm: clustering analysis method and its application", Proc. SPIE 4209, Multimedia Systems and Applications III, (22 March 2001); https://doi.org/10.1117/12.420835

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