Computationally efficient active noise reduction in headsets

Research output: Contribution to journalArticleResearchpeer review

Authors

  • J. Graf
  • E. Reithmeier
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Details

Original languageEnglish
Pages (from-to)567-573
Number of pages7
JournalJournal of Computer and Systems Sciences International
Volume48
Issue number4
Publication statusPublished - 21 Aug 2009

Abstract

In order to improve the passive attenuation of hearing protection headsets, active noise reduction (ANR) techniques are usually applied. These ANR-techniques accomplish the active attenuation of the disturbing acoustical noise using an out-of-phase antinoise. The antinoise destructively interferes with the disturbing noise close to the humans ear drum. The generation of the antinoise can be conducted using different control strategies. However, due to variable system plants, often adaptive control strategies are chosen. Even though such adaptive systems effectively attenuate the disturbing noise in a wide frequency range, a major disadvantage is the computational effort linked to the large amount of controller parameters. The controller parameters have tobe updated by the adaptive algorithm and the resulting computational effort makes the application of expensive digital signal processors unavoidable. For this reason, no commercial products realizing adaptive broadband techniques are on the market yet. In this paper, a partially-adaptive control approach is introduced which permits the reduction of the computational effort in comparison to conventional and fully adaptive ANR-controllers. The noise reduction performance as well as the computational efficiency of the proposed control strategy is presented.

Keywords

    ANR-headset, Computationally efficient active noise reduction, Partially-adaptive IIR-filter

ASJC Scopus subject areas

Cite this

Computationally efficient active noise reduction in headsets. / Graf, J.; Reithmeier, E.
In: Journal of Computer and Systems Sciences International, Vol. 48, No. 4, 21.08.2009, p. 567-573.

Research output: Contribution to journalArticleResearchpeer review

Graf J, Reithmeier E. Computationally efficient active noise reduction in headsets. Journal of Computer and Systems Sciences International. 2009 Aug 21;48(4):567-573. doi: 10.1134/S1064230709040108
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