Auxiliary channel masking in an audio signal

Details Auxiliary channel masking in an audio signal Auxiliary channel masking in an audio signal

2006-02-07

2006-02-07

Young, W. R. (Department: 2655)

Data processing: speech signal processing, linguistics, language

Speech signal processing

C704S200100, C704S230000, C375S240030

Reexamination Certificate

active

06996521

ABSTRACT:
A method is provided for embedding data into an audio signal and determining data embedded into an audio signal. In the method for embedding data into an audio signal, the audio signal is based on a first set of data and includes a phase component. The method modifies at least a portion of the phase component of the audio signal to embed a second set of data into the audio signal. The modified audio signal can be made to differ with respect to the audio signal in a manner at least one of (i) substantially imperceptible and (ii) imperceptible to a listener of the first set of data depending on the extent that the phase component of the audio signal is modified. In the method for determining data embedded into an audio signal, the audio signal is based on a first set of data of an original audio signal and includes a phase component. The method determines a second set of data embedded into the audio signal based on the phase component of the audio signal. The audio signal differs with respect to the original audio signal in a manner that is at least one of (i) substantially imperceptible and (ii) imperceptible to a listener of the first set of data.

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