Source sound separator with spectrum analysis through linear combination and method therefor
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United States of America Patent
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Apr 16, 2013
Grant Date -
Jun 16, 2011
app pub date -
Dec 10, 2010
filing date -
Dec 11, 2009
priority date (Note) -
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Abstract
In a source sound separator, first and second target sound predominant spectra are generated respectively by first and second processing operations for linear combination for emphasizing the target sound, using received sound signals of two microphones arrayed at a distance from each other. A target sound suppressed spectrum is generated by processing for linear combination for suppression of the target sound, using the two received sound signals. Further, a phase signal containing a larger amount of signal components of the target sound and exhibiting directivity in the direction of the target sound is generated by processing of linear combination, using the two received sound signals. The target sound and the interfering sound are separated from each other using the first and second target sound predominant spectra, the target sound suppressed spectrum, and the phase signal.
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