DocumentCode
1204114
Title
Adaptive noise estimation algorithm for speech enhancement
Author
Lin, L. ; Holmes, W.H. ; Ambikairajah, E.
Author_Institution
Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia
Volume
39
Issue
9
fYear
2003
fDate
5/1/2003 12:00:00 AM
Firstpage
754
Lastpage
755
Abstract
An efficient noise estimation algorithm for speech enhancement is proposed. The noisy speech is decomposed into subband signals and the subband noise estimate is updated by adaptively smoothing the noisy signal power. The smoothing parameter is chosen as a function of the estimated signal-to-noise ratio (SNR). This noise estimation technique gives reliable results even at very low SNRs.
Keywords
random noise; smoothing methods; speech enhancement; adaptive noise estimation algorithm; noisy signal power; signal-to-noise ratio; smoothing parameter; speech enhancement; subband noise estimate; subband signals;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20030480
Filename
1199987
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