Method and system for updating noise estimates during pauses in an information signal
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United States of America Patent
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Aug 22, 2000
Grant Date -
N/A
app pub date -
Oct 13, 1998
filing date -
Oct 13, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to an improved adaptive spectral estimator for estimating the spectral components in a signal containing both an information signal, such as speech, and noise. A method and system provide for generating noise estimates and then only updating the noise estimates during pauses in an information signal, when speech or other information is not detected, rather than continuously updating the noise estimates. A noise estimate is calculated for each frequency band and provides for the inclusion of a variable mathematical factor that can be set by the user to produce the best sound quality.
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