Signal enhancement system
US4177356A · kind A · utility
27Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1977 |
| Grant date | Dec 4, 1979 |
| Priority date | — |
| Expiry date | Oct 20, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G9/025
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An improved expanding system is described for enhancing transmitted or recorded audio signals previously processed by anyone of several nonlinear amplifying techniques. The system is designed to divide the audio signal received into substantially discrete frequency bands and each band is separately expanded, independently of the other bands, so as to minimize "breathing" and "pumping".
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.