Loading patent…
AssigneesDolby Laboratories Licensing Corporation, Dolby International AB
InventorsJeffrey Riedmiller, Karl J. Roeden, Kristofer Kjoerling, Heiko Purnhagen, Vinay Melkote, Leif Sehlstrom
Estimating the term…
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 (a) 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.
A method, performed by an audio signal processing device, for adjusting a dynamic range of an audio signal, the method comprising:
An audio signal processing device for adjusting a dynamic range of an audio signal, the audio signal processing device comprising one or more processors that:
A non-transitory computer readable storage medium comprising software instructions, which, when executed by an audio signal processing device, cause the audio signal processing device to perform a method for adjusting a dynamic range of an audio signal, the method comprising:
Dependencies are inferred from the claim text.