Auxiliary noise power scheduling for on-line secondary path modeling in single channel feedforward active noise control systems

Shakeel Ahmed, Akihisa Oishi, Muhammad Tahir Akhtar, Wataru Mitsuhashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Auxiliary noise, injected in active noise control (ANC) system for on-line secondary path modeling (SPM), contributes to the residual error (which we want to minimize). In this paper, two new schemes for controlling the auxiliary noise injection are proposed. The first method is ON/OFF control in which an additional fixed filter is used to temporarily hold the tap-weights of the adaptive on-line SPM filter. The decision (ON/OFF) is carried out on the basis of difference of power of errors from the two filters. After suspension of the auxiliary noise injection, the algorithm continuously checks for error outliers so that injection may be restarted in the case of path perturbation. In the second method a new auxiliary-noise-power scheduling strategy based on the error signal of the SPM filter is proposed. In both proposed schemes a fixed step-size is used for the SPM filter and the noise control filter, which reduces the computational complexity of the algorithms. In addition to this, in the second method, no off-line modeling (initial phase) of the secondary path is required.

Original languageEnglish
Title of host publication2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings
Pages317-320
Number of pages4
DOIs
Publication statusPublished - Oct 23 2012
Event2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Kyoto, Japan
Duration: Mar 25 2012Mar 30 2012

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (Print)1520-6149

Conference

Conference2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012
CountryJapan
CityKyoto
Period3/25/123/30/12

Keywords

  • Modified FxLMS algorithm
  • Noise scheduling
  • Normalized variable step-size (NVSS) LMS algorithm

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

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    Ahmed, S., Oishi, A., Akhtar, M. T., & Mitsuhashi, W. (2012). Auxiliary noise power scheduling for on-line secondary path modeling in single channel feedforward active noise control systems. In 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings (pp. 317-320). [6287880] (ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings). https://doi.org/10.1109/ICASSP.2012.6287880