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Experimental Study on Hybrid Noise Control
ZHANG Xiao-yu;YI Chui-jie
2011, 31 (3):
145-148.
DOI: 10.3969/j.issn.1006-1355-2011.03.034
The traditional passive noise control with the use of sound absorption or/and insulation is effective only for the noise control in the mid and high frequency range, while the active noise control based on sound cancellation by electro-acoustical means is effective in low frequency range (<500Hz). In this paper, a hybrid noise control method is presented taking advantages of both the passive and active control approaches. In this method, the active noise control based on multi-channel FXLMS algorithm is used to reduce the low frequency noise level, meanwhile, the mid to high frequency noise level is reduced by the passive noise control. Experimental results show that the frequency bandwidth of the noise which can be controlled is extended when the hybrid control is used, and this method is effective for the broadband noise control.
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