Systems, methods, apparatus, and computer-readable media for spatially selective audio augmentation
First Claim
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1. A method of processing a multichannel signal that includes a first audio input channel and a second audio input channel, said method comprising:
- performing an active noise cancellation operation on the first audio input channel to produce an antinoise signal;
processing the multichannel signal to obtain a source component, said processing including performing a spatially selective processing operation on the multichannel signal to separate the source component from a background component, wherein said spatially selective processing operation is based on at least gain differences between the first and second audio input channels;
processing the obtained source component to produce a target component; and
combining the antinoise signal and an augmented signal that is based on the target component to produce an audio output signal.
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Abstract
Spatially selective augmentation of a multichannel audio signal is described.
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Citations
48 Claims
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1. A method of processing a multichannel signal that includes a first audio input channel and a second audio input channel, said method comprising:
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performing an active noise cancellation operation on the first audio input channel to produce an antinoise signal; processing the multichannel signal to obtain a source component, said processing including performing a spatially selective processing operation on the multichannel signal to separate the source component from a background component, wherein said spatially selective processing operation is based on at least gain differences between the first and second audio input channels; processing the obtained source component to produce a target component; and combining the antinoise signal and an augmented signal that is based on the target component to produce an audio output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for processing a multichannel signal that includes a first audio input channel and a second audio input channel, said apparatus comprising:
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means for performing an active noise cancellation operation on the first audio input channel to produce an antinoise signal; means for processing the multichannel signal to obtain a source component, said means for processing including means for performing a spatially selective processing operation on the multichannel signal to separate the source component from a background component, wherein said spatially selective processing operation is based on at least gain differences between the first and second audio input channels; means for processing the obtained source component to produce a target component; and means for combining the antinoise signal and an augmented signal that is based on the target component to produce an audio output signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus for processing a multichannel signal that includes a first audio input channel and a second audio input channel, said apparatus comprising:
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an active noise cancellation filter configured to perform an active noise cancellation operation on the first audio input channel to produce an antinoise signal; an augmented reality processing module configured to process the multichannel signal to obtain a source component, said module including; a spatially selective filter configured to perform a spatially selective processing operation on the multichannel signal to separate the source component from a background component, wherein said spatially selective processing operation is based on at least gain differences between the first and second audio input channels; and an augmentation module configured (A) to process the obtained source component to produce a target component and (B) to output an augmented signal that is based on the target component; and an audio output stage configured to combine the antinoise signal and the augmented signal to produce an audio output signal. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A non-transitory computer-readable storage medium having tangible features that cause a machine reading the features to:
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perform an active noise cancellation operation on the first audio input channel to produce an antinoise signal; process the multichannel signal to obtain a source component, said processing including performing a spatially selective processing operation on a multichannel signal that includes a first audio input channel and a second audio input channel to separate the source component from a background component, wherein said spatially selective processing operation is based on at least gain differences between the first and second audio input channels; process the obtained source component to produce a target component; and combine the antinoise signal and an augmented signal that is based on the target component to produce an audio output signal. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification