Method for suppressing the late reverberation of an audio signal
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United States of America Patent
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Dec 13, 2016
Grant Date -
Jul 21, 2016
app pub date -
Jul 21, 2014
filing date -
Jul 23, 2013
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Abstract
A method for suppressing the late reverberation of an audio signal. A plurality of prediction vectors are calculated. A plurality of observation vectors from the modulus of the complex time-frequency transform of an input signal is generated. A plurality of synthesis dictionaries from the plurality of observation vectors are constructed. A late reverberation spectrum from the plurality of synthesis dictionaries and the plurality of prediction vectors are estimated. A plurality of observation vectors are filtered to eliminate the late reverberation spectrum and obtain a dereverberated signal modulus.
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