Speech coding system

Details Speech coding system Speech coding system

G - Physics

10

L

G10L 19/10 (2006.01) G10L 19/00 (2006.01)

Patent

CA 2044751

A speech coding system operated under a known code-excited linear prediction (CELP) coding method. The CELP coding is achieved by selecting an optimum pitch vector P from an adaptive codebook and the corresponding first gain and, at the same time, selecting an optimum code vector from a sparse- stochastic codebook and the corresponding second gain. The system of the present invention is featured by special code vectors to be loaded in the sparse- stochastic codebook, which code vectors are hexagonal lattice code vectors each consisting of a zero vector with one sample set to +1 and another sample set to -1.

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