Accession Number : ADD004716

Title :   Piecewise Linear Predictive Coding System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Roberts,John E ; Wiggins,Richard H

Report Date : 24 Jan 1978

Pagination or Media Count : 7

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. (Author)

Descriptors :   *Patents, *Coders, Linear systems, Predictions, Sampling, Multichannel, Analog signals, Signal processing

Subject Categories : Electrical and Electronic Equipment
      Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE