Apparatus and method for multi-channel parameter transformation
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United States of America Patent
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Apr 1, 2014
Grant Date -
Jan 20, 2011
app pub date -
Oct 5, 2007
filing date -
Oct 16, 2006
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Abstract
A parameter transformer generates level parameters, indicating an energy relation between a first and a second audio channel of a multi-channel audio signal associated to a multi-channel loudspeaker configuration. The level parameter are generated based on object parameters for a plurality of audio objects associated to a down-mix channel, which is generated using object audio signals associated to the audio objects. The object parameters have an energy parameter indicating an energy of the object audio signal. To derive the coherence and the level parameters, a parameter generator is used, which combines the energy parameter and object rendering parameters, which depend on a desired rendering configuration.
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