Title: Optimal biorthogonal transform for colored noise suppression with subband Wiener filtering
Authors: Phoong, SM
Lin, YP
Institute of Electrical and Control Engineering
Keywords: denoising;filter bank;noise suppression;subband Wiener filter;transform
Issue Date: 1-May-2002
Abstract: It is well-known that the Karhunen-Loeve transform (KLT) is optimal for white noise suppression. Recently, Akkarakaran and Vaidyanathan showed that for the case of colored noise, if both the noise and signal have a common KLT, then the KLT is optimal for subband noise suppression. In this paper, we will derive the optimal transform (not restricting to the class of unitary transforms) for the noise suppression problem when the signal and noise have arbitrary spectrum.
URI: http://dx.doi.org/10.1109/LSP.2002.1009007
ISSN: 1070-9908
DOI: 10.1109/LSP.2002.1009007
Volume: 9
Issue: 5
Begin Page: 154
End Page: 156
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