A controller composed of a nonrecursive filter and a recursive filter is used to approximate the ideal controller for a spatially feedforward duct ANC problem. The nonrecursive part represents the dynamics of the transducer, whereas the recursive part is in the form of a comb filter. The parameters of the comb filter are obtained from the impulse response of the controller by using the least-square method. The comb filter is then cascaded with the nonrecursive part implemented as either a fixed filter or an adaptive filter. In the latter approach, two types of LMS-based algorithms are used. The proposed algorithms are implemented on the platform of a digital signal processor. Experimental results showed that the approximated controller attained 17 dB maximal attenuation in the frequency band
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January 2003
Technical Papers
Broadband Spatially Feedforward Active Noise Control Algorithms Using a Comb Filter
Mingsian R. Bai,
Mingsian R. Bai
Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Rd., Hsin-Chu 300, Taiwan, Republic of China
E-mail: msbai@mail.nctu.edu.tw
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Jienwen Lai
Jienwen Lai
Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Rd., Hsin-Chu 300, Taiwan, Republic of China
Search for other works by this author on:
Mingsian R. Bai
E-mail: msbai@mail.nctu.edu.tw
Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Rd., Hsin-Chu 300, Taiwan, Republic of China
Jienwen Lai
Department of Mechanical Engineering, National Chiao-Tung University, 1001 Ta-Hsueh Rd., Hsin-Chu 300, Taiwan, Republic of China
Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received April 2001; Revised August 2002. Associate Editor: R. Ohayon.
J. Vib. Acoust. Jan 2003, 125(1): 18-23 (6 pages)
Published Online: January 6, 2003
Article history
Received:
April 1, 2001
Revised:
August 1, 2002
Online:
January 6, 2003
Citation
Bai, M. R., and Lai, J. (January 6, 2003). "Broadband Spatially Feedforward Active Noise Control Algorithms Using a Comb Filter ." ASME. J. Vib. Acoust. January 2003; 125(1): 18–23. https://doi.org/10.1115/1.1525003
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