Regular-pulse excitation speech coder

Details Regular-pulse excitation speech coder Regular-pulse excitation speech coder

2007-06-19

2007-06-19

Dorvil, Richemond (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S220000, C704S221000

Reexamination Certificate

active

10208389

ABSTRACT:
A method for providing synthesized speech using regular-pulse excitation includes a first step (300) of processing input speech to provide a residual excitation signal. A next step (302) includes defining important samples of the residual signal. Low frequency residual signals are particularly important. A next step (304) includes coding the important samples using regular-pulse excitation. A next step includes storing the important samples to random regular-pulse excitation grid positions in a memory using a first set of pseudorandomly generated numbers to assign the grid positions of each of the important samples. In this way, code rate for controlled, voice-only signals can be increased. This best applies to non-real time speech storage of voice tags, prompts and messaging.

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