Piecewise linear predictive coding system

Details Piecewise linear predictive coding system Piecewise linear predictive coding system

1976-10-13

1978-01-24

Ruggiero, Joseph F.

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179 1SA, 179 1555R, 325 38B, G06J 100, G10L 106

Patent

active

040707091

ABSTRACT:
Improved fidelity and reduced computational requirements are achieved in a linear predictive coding (LPC) system that utilizes multichannel signal processing and reduced sampling rates. The input analog signal is divided by filters into multiple, contiguous, substantially equal bandwidth signal components and each component is digitized and processed by a separate standard LPC transmit-receive system. Each transmit-receive system operates at a sampling rate that is equal to the normal sampling rate for the signal being processed divided by the number of channels or signal components used. The received signal components are filtered, converted to analog, and summed.

REFERENCES:
patent: 3502986 (1970-03-01), Lucky
patent: 3740476 (1973-06-01), Atal
patent: 3927268 (1975-12-01), Sciulli et al.
patent: 3973081 (1976-08-01), Hutchins
patent: 3973199 (1976-08-01), Widmer
Boxall-"Time-Shared Codes For Multichannel Delta Modulation and Differential PCM"-IEEE Transactions on Communications-vol. Com-23, No. 3, Mar. 1975, pp. 367-378.

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