NDLI: Modified Spectral Subtraction Method for Enhancement of Noisy Speech

Content Provider	IEEE Xplore Digital Library
Author	Krishnamoorthy, P. Prasanna, S.R.M.
Copyright Year	2005
Description	Author affiliation: Department of Electronics and Communication Engineering, Indian Institute of Technology Guwahati, Guwahati-781039, Assam, India. Email: pkm@iitg.ernet.in (Krishnamoorthy, P.)
Abstract	This paper proposes a modified spectral subtraction method for enhancing speech corrupted by additive background noise. The method is based on identifying and enhancing speech regions in the noisy speech signal. The speech regions are identified by computing the kurtosis and energy values from the noisy speech signals. For speech corrupted by additive background noise, kurtosis and energy values will be relatively high in speech regions compared to nonspeech regions. This property is exploited in deriving a weight function. The noisy signal is multiplied by the weight function to attenuate the noise in the nonspeech regions. The weighted speech signal is processed only in the speech regions by the spectral subtraction method to enhance speech components in the detected speech regions. The proposed method is effective in attenuating the noise components compared to the spectral subtraction method especially in nonspeech regions.
Starting Page	146
Ending Page	150
File Size	2855799
Page Count	5
File Format	PDF
ISBN	0780395883
DOI	10.1109/ICISIP.2005.1619427
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-12-14
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Additive noise Degradation Working environment noise Speech recognition Speech enhancement Signal processing Mobile communication Speaker recognition Background noise Speech processing
Content Type	Text
Resource Type	Article

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2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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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