Signal compression system
US4701953A · kind A · utility
93Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1984 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Jul 24, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A signal compression system includes a plurality of channels. A plurality of these channels include a bandpass filter (for filtering out all but a portion of an input signal), an intensity detector (for deriving a spectrally weighted estimate of the intensity of a broader spectral portion of the input signal than the bandpass filtered spectral portion), and a divider (for compressing the bandpass filtered spectral portion using a variable gain having a preselected functional relationship to the spectrally weighted intensity estimate). The signal compression system preserves cross-channel information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.