Digital signal processing method for real-time processing of narrow band signals
US4853963A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1987 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Apr 27, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/66
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A digital signal processing method for real-time processing of narrow band signals to provide for reconstitution of dynamic amplitude and harmonics beyond the passband. The method utilizes a digital microprocessor implementing a digital algorithm upon a digitized sample of the analog signals. After processing digital-to-analog conversion circuitry may be used to reconvert the processed digital signal into a processed analog output signal for further use. The digital processing effectively provides a primary voltage compressor (PVC) function for processing signals in m different frequency sub-bands by gain factors, and a summing function for digitally summing the gain products so realized, to provide a primarily compressed signal. The processing method then further effectively provides a secondary dynamic voltage compressor (SDC) function for processing the PVC signal in within n different frequency sub-bands by digitally multiplying signals with each of such sub-bands by gain factors. The further gain products so realized are digitally summed to provide a processed digital output. An AGC gain calculation is also provided by the digital processor for providing a gain-corrected digit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.