Online secondary path modeling in multichannel active noise control systems using variable step size

Authors:
Muhammad Tahir Akhtar;Masahide Abe;Masayuki Kawamata;Akinori Nishihara
Affiliations:
The Education and Research Center for Frontier Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu 182-8585, Tokyo, Japan;Graduate School of Engineering, Tohoku University, 6-6-05, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan;Graduate School of Engineering, Tohoku University, 6-6-05, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan;The Center for Research and Development of Educational Technology (CRADLE), Tokyo Institute of Technology, Tokyo, Japan
Venue:
Signal Processing
Year:
2008

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Abstract

In single-channel feedforward active noise control (ANC) systems, additive random noise based methods are often applied to achieve secondary path modeling (SPM) during online operation. This paper investigates the issue of online SPM in multichannel ANC systems. It is shown that the application of existing methods for online SPM in multichannel ANC systems greatly increases the computational complexity. Here we extend our previous work on single-channel variable step-size online SPM to multichannel ANC systems. It is shown that the proposed method has reduced computational complexity as compared with other methods. Computer simulations are carried out that demonstrate the effectiveness of the proposed method.