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

2005-06-21

2005-06-21

McFadden, Susan (Department: 2655)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

Reexamination Certificate

active

06910008

ABSTRACT:
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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