Multipulse lpc speech processing arrangement

Details Multipulse lpc speech processing arrangement Multipulse lpc speech processing arrangement

G - Physics

10

L

354/47

G10L 9/14 (1985.01)

Patent

CA 1222568

- 27 - IMPROVED MULTIPULSE LPC SPEECH PROCESSING ARRANGMENT Abstract A speech pattern predictive coding arrangement includes forming a prescribed format multipulse excitation signal for each successive time frame of the pattern. The multipulse excitation signal corresponds to the frame predictive residual. The redundancy in the multipulse excitation signal is reduced by forming a signal representative of the similarities between the current frame speech pattern and the speech pattern of preceding frames and removing such similarities from the multipulse excitation signal. Advantageously, the bit rate of the multipulse excitation signal is reduced and the excitation signal is rendered substantially independent of voice pitch.

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