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A nonlinear active noise control algorithm for virtual microphones controlling chaotic noise
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10.1121/1.4731227
/content/asa/journal/jasa/132/2/10.1121/1.4731227
http://aip.metastore.ingenta.com/content/asa/journal/jasa/132/2/10.1121/1.4731227
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Block diagram of the conventional FXLMS algorithm using the virtual sensing technique.

Image of FIG. 2.
FIG. 2.

Block diagram of the FSLMS algorithm using the virtual sensing technique.

Image of FIG. 3.
FIG. 3.

Experimental setup.

Image of FIG. 4.
FIG. 4.

Pole-zero plots showing the non-minimum phase transfer functions of the secondary paths when the duct is open at one end (a) , (b) .

Image of FIG. 5.
FIG. 5.

Chaotic behavior of various signals.

Image of FIG. 6.
FIG. 6.

Power spectrum magnitude (dB) of the virtual microphone signal under ANC OFF, ANC with FXLMS, FSLMS (P = 1), and FSLMS (P = 2) algorithms. N = 200, μ = μ 1 = 0.001. (a) Full spectrum and (b) attenuation (dB) over the frequency range.

Image of FIG. 7.
FIG. 7.

Power spectrum magnitude (dB) of the virtual microphone signal under FSLMS (P = 2) based ANC for various order N, μ = μ 1 = 0.001. (a) Full spectrum and (b) attenuation (dB) over the frequency range.

Image of FIG. 8.
FIG. 8.

Power spectrum magnitude (dB) of the virtual microphone signal under FSLMS (P = 2) based ANC for various step-size, μ = 0.001 and μ 1 = u. (a) Full spectrum and (b) attenuation (dB) over the frequency range.

Image of FIG. 9.
FIG. 9.

Power spectrum magnitude (dB) of the virtual microphone signal under FXLMS and FSLMS (P = 2) based ANC with and without artificially delaying the secondary path N = 200, μ = 0.001, and μ 1 = 0.001 (a) Full spectrum and (b) attenuation (dB) over the frequency range.

Image of FIG. 10.
FIG. 10.

Airfoil attached to the wind tunnel in the anechoic chamber.

Image of FIG. 11.
FIG. 11.

Power spectrum magnitude (dB) of the virtual microphone signal under FXLMS and FSLMS (P = 2) based ANC under airfoil generated primary noise with N = 200, μ = 0.001, and μ 1 = 0.005. (a) Full spectrum and (b) attenuation (dB) over the frequency range.

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/content/asa/journal/jasa/132/2/10.1121/1.4731227
2012-08-08
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A nonlinear active noise control algorithm for virtual microphones controlling chaotic noise
http://aip.metastore.ingenta.com/content/asa/journal/jasa/132/2/10.1121/1.4731227
10.1121/1.4731227
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