Method for auditory based noise reduction and an apparatus for auditory based noise reduction
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United States of America Patent
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Issued Date -
Apr 22, 2004
app pub date -
Aug 20, 2002
filing date -
Aug 20, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An apparatus and a method for speech enhancement, the method includes the steps of: (i) receiving a noisy input signal; (ii) determining whether a likelihood of an existence of a speech signal in the noisy input signal exceeds a first threshold; (iii) generating an estimated noise signal, if the likelihood is below the first threshold; (iv) generating an estimated speech signal by parametric subtraction, if the likelihood exceeds a threshold; and (v) determining a relationship between the estimated noise signal and the estimated speech signal and modifying the estimated speech signal in response to the determination.
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