Speech coding system and method

Details Speech coding system and method Speech coding system and method

1987-02-17

1991-10-22

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 79, G10L 500

Patent

active

050602683

ABSTRACT:
In a speech coding method and system in which a speech signal is analyzed in each frame so as to be separated into spectral envelope information and excitation information and both of the information are coded, each frame is divided into a plurality of sub-frames and a pulse of the maximum-amplitude is extracted from pulses within each sub-frame in order to provide large-amplitude pulses from each frame, thereby greatly reducing the number of pulse extracting processing steps.

REFERENCES:
patent: 3975587 (1976-08-01), Dunn et al.
patent: 3979557 (1976-09-01), Schulman et al.
patent: 4354057 (1982-10-01), Atol
Ichikawa, "A Speech Coding Method Using Thinned-Out Residual," 1985, All, ICASSP85.
Digital Processing of Speech Signals, L. R. Rabiver, R. W. Schafer, Prentice-Hall, 1978, pp. 150, 151.

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