Support of a multichannel audio extension
US7787632B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2003 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Mar 17, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S1/007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to methods and units supporting a multichannel audio extension. In order to allow an efficient extension requiring a low computational complexity, it is proposed that at an encoding end, at least state information is provided as side information for a provided mono audio signal (M) generated out of a multichannel audio signal. The state information indicates for each of a plurality of frequency bands how a predetermined or equally provided gain value is to be applied in the frequency domain to the mono audio signal (M) for obtaining first and a second channel signals (L,R) of a reconstructed multichannel audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.