Piecewise linear predictive coding system
US4070709A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1976 |
| Grant date | Jan 24, 1978 |
| Priority date | — |
| Expiry date | Oct 13, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.