APPARATUS AND METHOD FOR PROCESSING AN AUDIO SIGNAL FOR SPEECH ENHANCEMENT USING A FEATURE EXTRACTION
摘要
<p>An apparatus for processing an audio signal to obtain control information for a speech enhancement filter (12) comprises a feature extractor (14) for extracting at least one feature per frequency band of a plurality of frequency bands of a short-time spectral representation of a plurality of short-time spectral representations, where the at least one feature represents a spectral shape of the short-time spectral representation in the frequency band. The apparatus additionally comprises a feature combiner (15) for combining the at least one feature for each frequency band using combination parameters to obtain the control information for the speech enhancement filter for a time portion of the audio signal. The feature combiner can use a neural network regression method, which is based on combination parameters determined in a training phase for the neural network.</p>
申请公布号
WO2010015371(A1)
申请公布日期
2010.02.11
申请号
WO2009EP05607
申请日期
2009.08.03
申请人
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E . V .;UHLE, CHRISTIAN;HELLMUTH, OLIVER;GRILL, BERNHARD;RIDDERBUSCH, FALKO