Optimal biorthogonal transform for colored noise suppression with subband Wiener filtering

See May Phoong*, Yuan-Pei Lin

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations

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.

Original languageEnglish
Pages (from-to)154-156
Number of pages3
JournalIEEE Signal Processing Letters
Volume9
Issue number5
DOIs
StatePublished - 1 May 2002

Keywords

  • Denoising
  • Filter bank
  • Noise suppression
  • Subband Wiener filter
  • Transform

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