Factor setting device and noise suppression apparatus
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United States of America Patent
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Issued Date -
Sep 1, 2011
app pub date -
Feb 25, 2011
filing date -
Feb 26, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In a noise suppression apparatus, an index setter sets an exponent K that is a positive value. A factor setter variably sets a suppression factor according to the exponent K. A noise suppressor generates an audio signal from which a noise component is suppressed through noise suppression process of suppressing a Kth power of an amplitude of the noise component at each frequency thereof in a Kth power of an amplitude of the audio signal at each frequency thereof to a degree determined according to the suppression factor set by the factor setting part. Preferably, the index setter sets the exponent K to a value less than 0.1.
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