Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Samuel Ponvarma Ebenezer0
Date of Patent
February 28, 2012
0Patent Application Number
112988650
Date Filed
December 9, 2005
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An audio signal is divided among exponentially related subband filters. The spectral flatness measure in each subband signal is determined and the measures are weighted and combined. The sum is compared with a threshold to determine the presence of music or noise. If music is detected, the noise estimation process in the noise reduction circuitry is turned off to avoid distorting the signal. If music is detected, residual echo suppression circuitry is also turned off to avoid inserting comfort noise.
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