An active noise barrier with unidirectional secondary sources

An active noise barrier with unidirectional secondary sources

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 mat...

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Main Authors: Chen, Weisong, Rao, Wei, Min, Hequn, Qiu, Xiaojun
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2011
Subjects:
DRNTU::Science::Physics::Acoustics and sound
Online Access:https://hdl.handle.net/10356/94100
http://hdl.handle.net/10220/7016
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-941002023-03-04T17:18:10Z An active noise barrier with unidirectional secondary sources Chen, Weisong Rao, Wei Min, Hequn Qiu, Xiaojun School of Mechanical and Aerospace Engineering DRNTU::Science::Physics::Acoustics and sound 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. Accepted version 2011-09-08T01:19:02Z 2019-12-06T18:50:38Z 2011-09-08T01:19:02Z 2019-12-06T18:50:38Z 2011 2011 Journal Article Chen, W., Rao, W., Min, H., & Qiu, X. (2011). An active noise barrier with unidirectional secondary sources. Applied Acoustics, 72(12), 969-974. 0003-682X https://hdl.handle.net/10356/94100 http://hdl.handle.net/10220/7016 10.1016/j.apacoust.2011.06.006 160034 en Applied acoustics © 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]. 6 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Science::Physics::Acoustics and sound
spellingShingle DRNTU::Science::Physics::Acoustics and sound
Chen, Weisong
Rao, Wei
Min, Hequn
Qiu, Xiaojun
An active noise barrier with unidirectional secondary sources
description 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.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Chen, Weisong
Rao, Wei
Min, Hequn
Qiu, Xiaojun
format Article
author Chen, Weisong
Rao, Wei
Min, Hequn
Qiu, Xiaojun
author_sort Chen, Weisong
title An active noise barrier with unidirectional secondary sources
title_short An active noise barrier with unidirectional secondary sources
title_full An active noise barrier with unidirectional secondary sources
title_fullStr An active noise barrier with unidirectional secondary sources
title_full_unstemmed An active noise barrier with unidirectional secondary sources
title_sort active noise barrier with unidirectional secondary sources
publishDate 2011
url https://hdl.handle.net/10356/94100
http://hdl.handle.net/10220/7016
_version_ 1759856644185915392

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