Using multichannel decorrelation for improved multichannel upmixing
US9269360B2 · kind B2 · utility
11Cited by
2References
14Claims
0Family size
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Key dates
| Filing date | Jan 7, 2011 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Nov 20, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system of linear equations is used to upmix a number N of audio signals to generate a larger number M of audio signals that are psychoacoustically decorrelated with respect to one another and that can be used to improve the representation of a diffuse sound field. The linear equations are defined by a matrix that specifies a set of vectors in an M dimensional space that are substantially orthogonal to each other. Methods for deriving the system of linear equations are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.