IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
Noise power scheduling in active noise control systems with online secondary path modeling
M. T. AkhtarM. AbeM. Kawamata
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JOURNAL FREE ACCESS

2007 Volume 4 Issue 2 Pages 66-71

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Abstract

In active noise control (ANC) systems, the online secondary path modeling (OSPM) methods that use additive random noise are often applied. The additive random noise, however, contributes to the residual noise, and thus deteriorates the noise control performance of ANC systems. This paper proposes a new OSPM method with power scheduling of additive random noise. Here the OSPM filter is adapted using a variable step size (VSS) LMS algorithm already proposed by authors. Furthermore, the additive-random-noise power is scheduled based on the convergence status of an ANC system. Computer simulations demonstrate the effectiveness of the proposed method.

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© 2007 by The Institute of Electronics, Information and Communication Engineers
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