Excitation vector generator, speech coder and speech decoder

Details Excitation vector generator, speech coder and speech decoder Excitation vector generator, speech coder and speech decoder

G - Physics

10

L

G10L 19/12 (2006.01)

Patent

CA 2355978

A random code vector reading section and a random codebook of a conventional CELP type speech coder/decoder are respectively replaced with an oscillator for outputting different vector streams in accordance with values of input seeds, and a seed storage section for storing a plurality of seeds . This makes it unnecessary to store fixed vectors as they are in a fixed codebook (ROM), thereby considerably reducing the memory capacity.

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