標題: BAYESIAN LEARNING FOR SPEECH DEREVERBERATION
作者: Chien, Jen-Tzung
Chang, You-Cheng
電機工程學系
Department of Electrical and Computer Engineering
關鍵字: Bayesian learning;nonnegative matrix factorization;speech dereverberation
公開日期: 2016
摘要: This study presents a Bayesian approach to enhance the magnitude spectra of single-channel reverberant speech signals. Speech dereverberation model is constructed by using a non-negative convolutive transfer function (NCTF) and a nonnegative matrix factorization (NMF). NCTF is used to characterize the magnitude spectra of speech signal and room impulse response while NMF is applied to represent the fine structure of speech spectra. Importantly, we deal with the variations of dereverberation model by introducing the exponential priors for reverberation kernel and noise signal. A full Bayesian solution to speech dereverberation is obtained according to the variational Bayesian inference algorithm. Using this algorithm, the room configuration and the speaker characteristics are automatically learned from data. Such a general model can be reduced to the previous methods. Experimental results on both simulated data and real recordings from 2014 RE-VERB Challenge show the merit of the proposed method for single-channel speech dereverberation.
URI: http://hdl.handle.net/11536/134553
ISBN: 978-1-5090-0746-2
ISSN: 2161-0363
期刊: 2016 IEEE 26TH INTERNATIONAL WORKSHOP ON MACHINE LEARNING FOR SIGNAL PROCESSING (MLSP)
顯示於類別:會議論文