Method and apparatus for layout and format independent 3D audio reproduction
First Claim
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1. A device for encoding an input audio signal into a channel-independent representation comprising a multichannel output audio signal for reproduction over a multiple loudspeaker system, the device comprising:
- a receiver that receives the input audio signal comprising a plurality of individual channels, N;
an interface that defines a space D covering a target audience and for partitioning the space D into a plurality of portions k independent from the plurality of channels N;
a processor that generates at least one spatial presence factor m for each combination of an input audio channel and portion k, wherein each factor m quantifies a degree of presence of each input audio signal into each portion k of space D; and
a processor that maps the input audio signal to the output audio signal, for reproduction within the portions k, based on the value assigned to each spatial presence factor m.
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Abstract
A method for encoding audio signals, for later reproduction in arbitrary three-dimensional loudspeaker layouts, based on the generation of an intermediate channel-independent representation, which enables the creation, manipulation and reproduction of sounds with complex apparent size and shape, including multiple disconnected shapes.
10 Citations
15 Claims
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1. A device for encoding an input audio signal into a channel-independent representation comprising a multichannel output audio signal for reproduction over a multiple loudspeaker system, the device comprising:
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a receiver that receives the input audio signal comprising a plurality of individual channels, N; an interface that defines a space D covering a target audience and for partitioning the space D into a plurality of portions k independent from the plurality of channels N; a processor that generates at least one spatial presence factor m for each combination of an input audio channel and portion k, wherein each factor m quantifies a degree of presence of each input audio signal into each portion k of space D; and a processor that maps the input audio signal to the output audio signal, for reproduction within the portions k, based on the value assigned to each spatial presence factor m. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of encoding an input audio signal into a channel-independent representation comprising an output audio signal suitable for reproduction over a multiple loudspeaker system, the method comprising:
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receiving the input audio signal comprising a plurality of individual channels, N; defining a space D covering a target audience and partitioning the space D into a plurality of portions k independent from the plurality of channels N; generating at least one spatial presence factor m for each combination of input audio and portion k, wherein each factor m quantifies a degree of presence of each input audio signal into each portion k of space D; and mapping the input audio signal to the output audio signal, for reproduction within the portions k, based on the value assigned to each spatial presence factor m. - View Dependent Claims (14, 15)
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Specification