Audio channel spatial translation
AssigneeDolby Laboratories Licensing Corporation
InventorMark F. DAVIS
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Abstract
The present invention is directed to methods and apparatus for translating a first plurality of audio input channels to a second plurality of audio output channels. This includes determining that there is pair-wise coding among any of the first plurality of audio input channels, determining an input/output-mapping matrix for mapping at least a first set of the first plurality of audio input channels to at least a second set of the second plurality of audio output channels; and deriving the second plurality of audio output channels based on first plurality of audio input channels, the input/output-mapping matrix and the determined pair-wise coding. The first plurality of audio input channels represent the same soundfield represented by the second plurality of audio output channels.
Claims9
A method for translating a first plurality of audio input channels to a second plurality of audio output channels, the method comprising:
- receiving, by an audio processor decoder module, the first plurality of audio input channels;
- determining that there is pair-wise coding among any of the first plurality of audio input channels;
- determining an input/output-mapping matrix for mapping at least a first set of the first plurality of audio input channels to at least a second set of the second plurality of audio output channels;
- and
- deriving the second plurality of audio output channels based on first plurality of audio input channels, the input/output-mapping matrix and the determined pair-wise coding,
- wherein the deriving the second plurality of audio output channels based on first plurality of audio input channels causes a soundfield represented by the first plurality of audio input channels to be determined, and
- wherein the first plurality of audio input channels represent the same soundfield represented by the second plurality of audio output channels.
A system for translating a first plurality of audio input channels to a second plurality of audio output channels, the system comprising:
- a receiver for receiving the first plurality of audio input channels;
- a processor configured to determine that there is pair-wise coding among any of the first plurality of audio input channels, the processor further configured to determine an input/output-mapping matrix for mapping at least a first set of the first plurality of audio input channels to at least a second set of the second plurality of audio output channels;
- and
- a decoder configured to derive the second plurality of audio output channels based on first plurality of audio input channels, the input/output-mapping matrix and the determined pair-wise coding,
- wherein the decoder is further configured to derive the second plurality of audio output channels based on first plurality of audio input channels causes a soundfield represented by the first plurality of audio input channels to be determined, and
- wherein the first plurality of audio input channels represent the same soundfield represented by the second plurality of audio output channels.
Dependencies are inferred from the claim text.