NDLI: Low distortion acoustic noise suppression using a perceptual model for speech signals

Content Provider	IEEE Xplore Digital Library
Author	Thiemann, J. Kabal, P.
Copyright Year	2002
Description	Author affiliation: Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que., Canada (Thiemann, J.; Kabal, P.)
Abstract	Algorithms for the suppression of acoustic noise in speech signals are generally short-time spectral amplitude (STSA) methods such as spectral subtraction. These methods have been effective at reducing or removing background noise, but have a tendency (at low SNR) to add annoying artefacts, such as musical noise, and distortion of the speech signal. By employing an auditory model, psychoacoustic effects such as simultaneous masking can be used to apply spectral modification in a more effective manner, reducing the amount of overall modification necessary. In this way, the artefacts introduced by processing are reduced. The paper proposes a method for significantly improving the reduction in the background acoustic noise in narrowband and wideband speech signals, even at low SNR. We show that the use of a subtraction strategy and psychoacoustic model originally intended for audio signals yields an output signal with little or no audible distortion.
Starting Page	172
Ending Page	174
File Size	234183
Page Count	3
File Format	PDF
ISBN	0780375491
DOI	10.1109/SCW.2002.1215762
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-09
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Acoustic distortion Acoustic noise Speech enhancement Psychoacoustic models Background noise Signal to noise ratio Noise reduction Psychology Narrowband Wideband
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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