Noise suppression
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United States of America Patent
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Jan 30, 2007
Issued Date -
N/A
app pub date -
Jul 9, 2004
filing date -
Nov 15, 1999
priority date (Note) -
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Abstract
A method of noise suppression to suppress noise in a signal containing background noise (314) in a communications path between a cellular communications network and a mobile terminal. The method comprises the steps of: estimating and up-dating a spectrum of the background noise (332, 334); using the background noise spectrum to suppress noise in the signal; generating an indication to indicate the operation of at least one of a discontinuous transmission unit (DTX) and a bad frame handling unit (BFI); and freezing estimating and up-dating of the spectrum of the background noise when the indication is present.
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