Method and apparatus for encoding multi-channel audio signal and method and apparatus for decoding multi-channel audio signal
US8798276B2 · kind B2 · utility
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Key dates
| Filing date | Apr 15, 2010 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Dec 12, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus which encode multi-channel audio signals and a method and apparatus which decode multi-channel audio signals. When encoding, a downmixed audio signal, first additional information for restoring multi-channel audio signals from the downmixed audio signal, and second additional information representing characteristics of a residual signal are multiplexed. When decoding, restored multi-channel audio signals having a predetermined phase difference are combined using the second additional information, and an audio signal of each channel is corrected, in order to improve quality of the restored audio signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.