An active noise barrier with unidirectional secondary sources

Chen, W; Rao, W; Min, H; Qiu, X

An active noise barrier with unidirectional secondary sources

Chen, W Rao, W Min, H Qiu, X

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Publication Type:: Journal Article
Citation:: Applied Acoustics, 2011, 72 (12), pp. 969 - 974
Issue Date:: 2011-12-01

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Field	Value	Language
dc.contributor.author	Chen, W	en_US
dc.contributor.author	Rao, W	en_US
dc.contributor.author	Min, H	en_US
dc.contributor.author	Qiu, X https://orcid.org/0000-0002-5181-1220	en_US
dc.date.issued	2011-12-01	en_US
dc.identifier.citation	Applied Acoustics, 2011, 72 (12), pp. 969 - 974	en_US
dc.identifier.issn	0003-682X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/115896
dc.description.abstract	An active noise barrier with unidirectional secondary sources is investigated in this paper, where the unidirectional secondary source consists of two closely located loudspeakers with pre-adjusted phase difference. The secondary sound field of the unidirectional sources is adjusted to maximally match the primary sound field in the shadow zone behind the barrier. It is shown both numerically and experimentally that the noise reduction performance of the active noise barrier can be improved remarkably by replacing monopoles with the unidirectional sources. The mechanism for the improvement is also investigated. © 2011 Elsevier Ltd. All rights reserved.	en_US
dc.relation.ispartof	Applied Acoustics	en_US
dc.relation.isbasedon	10.1016/j.apacoust.2011.06.006	en_US
dc.subject.classification	Acoustics	en_US
dc.title	An active noise barrier with unidirectional secondary sources	en_US
dc.type	Journal Article
utslib.citation.volume	12	en_US
utslib.citation.volume	72	en_US
utslib.for	0203 Classical Physics	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	1201 Architecture	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access
pubs.issue	12	en_US
pubs.publication-status	Published	en_US
pubs.volume	72	en_US

Abstract:

An active noise barrier with unidirectional secondary sources is investigated in this paper, where the unidirectional secondary source consists of two closely located loudspeakers with pre-adjusted phase difference. The secondary sound field of the unidirectional sources is adjusted to maximally match the primary sound field in the shadow zone behind the barrier. It is shown both numerically and experimentally that the noise reduction performance of the active noise barrier can be improved remarkably by replacing monopoles with the unidirectional sources. The mechanism for the improvement is also investigated. © 2011 Elsevier Ltd. All rights reserved.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/115896