NDLI: Speech enhancement by combining statistical estimators of speech and noise

Content Provider	IEEE Xplore Digital Library
Author	Yang Lu Loizou, P.C.
Copyright Year	2010
Description	Author affiliation: Center for Robust Speech Systems, Department of Electrical Engineering, The University of Texas at Dallas, Richardson, 75080,USA (Yang Lu; Loizou, P.C.)
Abstract	This paper presents a novel speech enhancement algorithm that can substantially improve the signal-to-residual spectrum ratio by combining statistical estimators of the spectral magnitude of the speech and noise. The noise spectral magnitude estimator is derived from the speech magnitude estimator, by appropriately transforming the a priori and the a posteriori SNR values. By expressing the signal-to-residual spectrum ratio as a function of the estimator's gain function, we derive a hybrid strategy that can improve the signal-to-residual spectrum ratio when the a priori and the a posteriori SNR are detected to be lower than 0 dB. Experimental results showed that the signal-to-residual spectrum ratio as well as the PESQ scores can be improved substantially in stationary and quasi-stationary noise conditions with the proposed hybrid estimators. Informal listening tests revealed improved speech quality and no musical noise.
Starting Page	4754
Ending Page	4757
File Size	169672
Page Count	4
File Format	PDF
ISBN	9781424442959
ISSN	15206149
DOI	10.1109/ICASSP.2010.5495156
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-03-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Speech enhancement Signal to noise ratio Additive noise Frequency estimation Noise robustness Testing Attenuation Fourier transforms SNR improvement Statistical-model based speech enhancement frequency-weighted SNR
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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