Audio Signal Processing
1 Assignment
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Accused Products
Abstract
An audio system for processing two channels of audio input to provide more than two output channels. The input may be conventional stereo material or compressed audio signal data. The audio processing includes separating the input signals into frequency bands and processing the frequency bands according to processes which may differ from band to band. The audio processing includes no processing of L-R signals.
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Citations
23 Claims
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1-19. -19. (canceled)
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20. A method for processing two input audio channel signals to comprising:
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separating unreconstructable compressed audio signal data in the input audio channel signals into frequency bands; separately processing the frequency bands; and combining the separately processed frequency bands to provide the n output audio channels. - View Dependent Claims (21, 22)
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23. Apparatus for processing two input audio channel signals to provide more than two output audio channel signals, the apparatus comprising:
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circuitry for separating unreconstructable compressed audio signal data in the input audio channel signals into frequency bands; circuitry for separately processing the frequency bands; and circuitry for combining the separately processed frequency bands to provide the more than two output audio channel signals.
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Specification