Circular active noise barrier using theoretical control filter considering interaction between speaker and barrier

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A circular active noise barrier using a theoretically calculated control filter without real-time adaptation was proposed for noise reduction in a specific outdoor space. A compact circular barrier is used for the movable system to cope with changes in the location of the workspace, and noise in a wide frequency band can be reduced by conducting active noise control through control speakers arranged around a barrier. However, there was a significant performance gap compared with the maximum performance achieved by using the experimental fixed filter due to an extremely simplified theoretical model which ignores the interaction between the control speakers and the barrier. Therefore, this study tried to minimize the performance degradation when applying the theoretically calculated control filter. Another theoretical model is introduced to improve the noise reduction performance by considering the interaction between the control speaker and the barrier. Through experiment, it is confirmed that noise reduction performance is improved by about 2.6 dB in the frequency of interest. © 2023, The Author(s).
Publisher
NATURE PORTFOLIO
Issue Date
2023-02
Language
English
Article Type
Article
Citation

SCIENTIFIC REPORTS, v.13, no.1

ISSN
2045-2322
DOI
10.1038/s41598-023-27756-4
URI
http://hdl.handle.net/10203/306355
Appears in Collection
ME-Journal Papers(저널논문)
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