| 发明名称 |
SYSTEM FOR MAINTAINING REVERSIBLE DYNAMIC RANGE CONTROL INFORMATION ASSOCIATED WITH PARAMETRIC AUDIO CODERS |
| 摘要 |
On the basis of a bitstream (P), an n-channel audio signal (X) is reconstructed by deriving an m-channel core signal (Y) and multichannel coding parameters (α) from the bitstream, where 1≦m<n. Also derived from the bitstream are pre-processing dynamic range control, DRC, parameters (DRC2) quantifying an encoder-side dynamic range limiting of the core signal. The n-channel audio signal is obtained by parametric synthesis in accordance with the multichannel coding parameters and while cancelling any encoder-side dynamic range limiting based on the pre-processing DRC parameters. In particular embodiments, the reconstruction further includes use of compensated post-processing DRC parameters quantifying a potential decoder-side dynamic range compression. Cancellation of an encoder-side range limitation and range compression are preferably performed by different decoder-side components. Cancellation and compression may be coordinated by a DRC pre-processor. |
| 申请公布号 |
EP2850612(A1) |
申请公布日期 |
2015.03.25 |
| 申请号 |
EP20130724945 |
申请日期 |
2013.05.02 |
| 申请人 |
DOLBY LABORATORIES LICENSING CORPORATION;DOLBY INTERNATIONAL AB |
发明人 |
RIEDMILLER, JEFFREY;ROEDEN, KARL, J.;KJOERLING, KRISTOFER;PURNHAGEN, HEIKO;MELKOTE, VINAY;SEHLSTROM, LEIF |
| 分类号 |
G10L19/008;G10L19/18;H03G7/00;H03G9/00 |
主分类号 |
G10L19/008 |
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