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RÁŠO, O. BALÍK, M.
Original Title
Adaptive Thresholding of DFT Coefficients based on Probability Distribution of Additive Noise
Type
journal article - other
Language
English
Original Abstract
The proposed method of adaptive thresholding uses probability distribution of additive noise signal, by which the input signal is corrupted. The additive noise with non-uniformly distributed power spectral density can be reduced via normalization process. The method is focused on musical signal corrupted by the noise with relative high input signal-to-noise ratio ranging between 20 and 30 dB. The method uses the thresholding of coefficients of Discrete Fourier transform (DFT). Minimal signal distortion should be introduced by this method. In conclusion the method is tested for noise reduction efficiency and size of degradation of processed signal.
Keywords
Thresholding, Acoustic noise, Digital filters, Noise reduction, Discrete Fourier transform.
Authors
RÁŠO, O.; BALÍK, M.
RIV year
2010
Released
24. 3. 2010
ISBN
1790-5052
Periodical
WSEAS Transactions on Signal Processing
Year of study
2009
Number
12
State
Hellenic Republic
Pages from
390
Pages to
399
Pages count
10
BibTex
@article{BUT47309, author="Ondřej {Rášo} and Miroslav {Balík}", title="Adaptive Thresholding of DFT Coefficients based on Probability Distribution of Additive Noise", journal="WSEAS Transactions on Signal Processing", year="2010", volume="2009", number="12", pages="390--399", issn="1790-5052" }