Multi-channel perceptual audio compression system with encoding mode switching among matrixed channels
US5488665A · kind A · utility
37Cited by
3References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1993 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Nov 23, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/665
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A five-channel perceptual audio compression system which encodes five matrixed channels switches among a fourteen encoding modes each utilizing a respective different set of matrixed channels. Six of the modes are for encoding the three front channels and eight of the modes are for encoding the two back channels. A number of the modes have as at least one of their respective matrixed channels a matrixed channel which is a function of a) one of the input channels or a sum or difference of two of them, and b) a predicted value of a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.