A simplified method for online acoustic feedback path modeling in multichannel active noise control systems

M. T. Akhtar, M. Abe, M. Kawamata, W. Mitsuhashi

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

3 Citations (Scopus)

Abstract

This paper investigates the issue of acoustic feedback in multichannel active noise control (ANC) systems. The presence of acoustic feedback degrades the performance of the ANC systems, and in the worst case the ANC system may become unstable. Here we propose a simplified solution for acoustic feedback modeling and neutralization during the online operation of multichannel ANC systems. The computational complexity of the proposed method is lower than the existing method. Computer simulations are carried out for a 1 × 2 × 2 system comprising one reference microphone, two secondary loudspeakers and two error microphones. It is demonstrated that the proposed method achieves better performance than the existing method, and at somewhat lower computational complexity.

Original languageEnglish
Title of host publicationProceedings of SICE Annual Conference 2008 - International Conference on Instrumentation, Control and Information Technology
Pages50-54
Number of pages5
DOIs
Publication statusPublished - Dec 1 2008
Externally publishedYes
EventSICE Annual Conference 2008 - International Conference on Instrumentation, Control and Information Technology - Tokyo, Japan
Duration: Aug 20 2008Aug 22 2008

Publication series

NameProceedings of the SICE Annual Conference

Conference

ConferenceSICE Annual Conference 2008 - International Conference on Instrumentation, Control and Information Technology
CountryJapan
CityTokyo
Period8/20/088/22/08

Keywords

  • Acoustic feedback
  • Adaptive signal processing
  • Multichannel active noise control
  • Online feedback-path modeling

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Computer Science Applications

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