Multi-pulse excited linear predictive speech coder

Details Multi-pulse excited linear predictive speech coder Multi-pulse excited linear predictive speech coder

G - Physics

10

L

354/47

G10L 3/00 (1985.01)

Patent

CA 1213059

ABSTRACT: "Multi-pulse excited linear predictive speech coder." An LPC-synthesizer (1) produces a synthetic speech signal (s(n)) of which the difference (2) from the reference speech signal (s(n)) is perceptually weighted (4). In response to the weighted error signal (e(n), .epsilon. (n)) error minimizing means (5) control the multi-pulse excitation signal generator (6). The error minimizing procedure is accelerated by effecting the minimizing operation only in the region of the maximum of an auxiliary function (Mk(n)) which is a measure of the energy of the weighted error signal.

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