Noise suppression in speech signals
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United States of America Patent
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Apr 29, 2014
Grant Date -
Aug 19, 2010
app pub date -
Jul 27, 2007
filing date -
Jul 27, 2007
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Abstract
During speech processing a filter adjusts a spectral envelope of an input speech signal with a frequency dependent adjustment factor. The adjustment factors for respective spectral components are selected dependent on the input speech signal. The factor is set to a first or second non-zero value, the second value being smaller than the first value, when a strength average for the spectral component is above and below a threshold value respectively.
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