Modified-filtered-x LMS algorithm based active noise control systems with improved online secondary-path modeling

Muhammad Tahir Akhtar, Masahide Abe, Masayuki Kawamata

Research output: Contribution to journalConference articlepeer-review

24 Citations (Scopus)

Abstract

This paper proposes a new method for active noise control systems with online secondary-path modeling. The main features of the proposed method are that the modified-FxLMS (MFxLMS) algorithm is used in adapting the noise control filter and a new variable step-size (VSS) LMS algorithm is used in the secondary-path modeling filter. The step-size is varied in accordance with the power of the residual error signal (the desired response for the modeling filter). It is found that the desired response for the modeling filter is corrupted by a noise which is decreasing in nature, (ideally) converging to zero. Hence a small step-size is used initially and later its value is increased accordingly. Computer simulations show that the proposed method gives better performance than the existing methods.

Original languageEnglish
Pages (from-to)I13-I16
JournalMidwest Symposium on Circuits and Systems
Volume1
Publication statusPublished - Dec 1 2004
Externally publishedYes
EventThe 2004 47th Midwest Symposium on Circuits and Systems - Conference Proceedings - Hiroshima, Japan
Duration: Jul 25 2004Jul 28 2004

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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