Optimal transform for colored noise suppression

See May Phoong*, Yuan-Pei Lin

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

There has been interest in the application of filter banks and transforms to noise suppression. Recently, Akkarakaran and Vaidyanathan (2001) showed that when the noise is white, the optimal transform (not necessary unitary) for noise suppression is the Karhunen-Loeve transform (KLT). Moreover they 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 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
Title of host publication2002 International Conference on Communications, Circuits and Systems and West Sino Exposition, ICCCAS 2002 - Proceedings
EditorsLemin Li
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages939-943
Number of pages5
ISBN (Electronic)0780375475, 9780780375475
DOIs
StatePublished - 1 Jan 2002
Event1st International Conference on Communications, Circuits and Systems, ICCCAS 2002 - Chengdu, China
Duration: 29 Jun 20021 Jul 2002

Publication series

Name2002 International Conference on Communications, Circuits and Systems and West Sino Exposition, ICCCAS 2002 - Proceedings
Volume2

Conference

Conference1st International Conference on Communications, Circuits and Systems, ICCCAS 2002
CountryChina
CityChengdu
Period29/06/021/07/02

Keywords

  • denoising
  • filter bank
  • noise suppression
  • transform

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