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An active noise barrier with unidirectional secondary sources

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An active noise barrier with unidirectional secondary sources

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dc.contributor.author Chen, Weisong
dc.contributor.author Rao, Wei
dc.contributor.author Min, Hequn
dc.contributor.author Qiu, Xiaojun
dc.date.accessioned 2011-09-08T01:19:02Z
dc.date.available 2011-09-08T01:19:02Z
dc.date.copyright 2011
dc.date.issued 2011-09-08
dc.identifier.citation Chen, W., Rao, W., Min, H., & Qiu, X. (2011). An active noise barrier with unidirectional secondary sources. Applied Acoustics, 72(12), 969-974.
dc.identifier.issn 0003-682X
dc.identifier.uri http://hdl.handle.net/10220/7016
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.
dc.format.extent 6 p.
dc.language.iso en
dc.relation.ispartofseries Applied acoustics
dc.rights © 2011 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Applied Acoustics, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/j.apacoust.2011.06.006].
dc.subject DRNTU::Science::Physics::Acoustics and sound
dc.title An active noise barrier with unidirectional secondary sources
dc.type Journal Article
dc.contributor.school School of Mechanical and Aerospace Engineering
dc.identifier.doi http://dx.doi.org/10.1016/j.apacoust.2011.06.006
dc.description.version Accepted version
dc.identifier.rims 160034

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