Optimal biorthogonal transform for colored noise suppression with subband Wiener filtering

被引：0
|
作者：
Phoong, SM [1 ]
Lin, YP
机构：
[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 10764, Taiwan
[2] Natl Taiwan Univ, Grad Inst Commun Engn, Taipei 10764, Taiwan
[3] Natl Chiao Tung Univ, Dept Elect & Control Engn, Hsinchu 300, Taiwan
来源：
IEEE SIGNAL PROCESSING LETTERS | 2002年 / 9卷 / 05期
关键词：
denoising; filter bank; noise suppression; subband Wiener filter; transform;
D O I：
10.1109/LSP.2002.1009007
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
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页码：154 / 156
页数：3
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