Variable Step-size based online acoustic feedback neutralization in multiple-channel ANC systems

Muhammad Tahir Akhtar; Wataru Mitsuhashi

doi:10.1109/MWSCAS.2010.5548834

Variable Step-size based online acoustic feedback neutralization in multiple-channel ANC systems

Muhammad Tahir Akhtar, Wataru Mitsuhashi

Department of Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

9 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. Previously we have proposed a simplified method for acoustic feedback path modeling and neutralization (FBPMN) during the online operation of multichannel ANC systems. The computational complexity of the proposed method is lower than the existing method. Here we introduce an intuition based variable step-size (VSS) parameter, for LMS algorithm of FBPMN filter. This VSS is motivated from the fact that the error signal of FBPMN filter contains a disturbance-component that is decreasing in nature. 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.

Original language	English
Title of host publication	2010 IEEE International 53rd Midwest Symposium on Circuits and Systems, MWSCAS 2010
Pages	1073-1076
Number of pages	4
DOIs	https://doi.org/10.1109/MWSCAS.2010.5548834
Publication status	Published - Sep 20 2010
Event	53rd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2010 - Seattle, WA, United States Duration: Aug 1 2010 → Aug 4 2010

Publication series

Name	Midwest Symposium on Circuits and Systems

Conference

Conference	53rd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2010
Country	United States
City	Seattle, WA
Period	8/1/10 → 8/4/10

ASJC Scopus subject areas

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

Access to Document

10.1109/MWSCAS.2010.5548834

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Variable Step-size based online acoustic feedback neutralization in multiple-channel ANC systems. / Akhtar, Muhammad Tahir; Mitsuhashi, Wataru.

2010 IEEE International 53rd Midwest Symposium on Circuits and Systems, MWSCAS 2010. 2010. p. 1073-1076 5548834 (Midwest Symposium on Circuits and Systems).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Akhtar, MT & Mitsuhashi, W 2010, Variable Step-size based online acoustic feedback neutralization in multiple-channel ANC systems. in 2010 IEEE International 53rd Midwest Symposium on Circuits and Systems, MWSCAS 2010., 5548834, Midwest Symposium on Circuits and Systems, pp. 1073-1076, 53rd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2010, Seattle, WA, United States, 8/1/10. https://doi.org/10.1109/MWSCAS.2010.5548834

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