Audio coding using de-correlated signals
US8019350B2 · kind B2 · utility
34Cited by
2References
19Claims
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Key dates
| Filing date | Nov 29, 2005 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Jun 28, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/008
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-channel signal having at least three channels can be reconstructed such, that the reconstructed channels are at least partly de-correlated from each other using a downmixed signal derived from an original multi-channel signal and a set of de-correlated signals provided by a de-correlator (101) that derives the set of de-correlated signals from the down-mix signal, wherein the de-correlated signals within the set of de-correlated signals are mutually mostly orthogonal to each other, i.e. an orthogonality relation between channel pairs is satisfied within an orthogonality tolerance range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.