Device and method for graduated encoding of a multichannel audio signal based on a principal component analysis
US8359194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2007 |
| Grant date | Jan 22, 2013 |
| Priority date | — |
| Expiry date | Apr 11, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and a method for the scalable coding of a multi-channel audio signal comprising a principal component analysis (PCA) transformation of at least two channels (L, R) of the audio signal into a principal component (CP) and at least one residual sub-component (r) by rotation defined by a transformation parameter (θ), comprising the following steps: formation of a frequency subband-based residual structure (Sfr) on the basis of the at least one residual sub-component (r), and definition of a coded audio signal (SC) comprising the principal component (CP), at least one residual structure (Sfr) of a frequency subband and the transformation parameter (θ).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.