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https://hdl.handle.net/10356/94100| Title: | An active noise barrier with unidirectional secondary sources | Authors: | Chen, Weisong Rao, Wei Min, Hequn Qiu, Xiaojun |
Keywords: | DRNTU::Science::Physics::Acoustics and sound | Issue Date: | 2011 | Source: | Chen, W., Rao, W., Min, H., & Qiu, X. (2011). An active noise barrier with unidirectional secondary sources. Applied Acoustics, 72(12), 969-974. | Series/Report no.: | Applied acoustics | 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. | URI: | https://hdl.handle.net/10356/94100 http://hdl.handle.net/10220/7016 |
ISSN: | 0003-682X | DOI: | 10.1016/j.apacoust.2011.06.006 | Schools: | School of Mechanical and Aerospace Engineering | 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]. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
| Appears in Collections: | MAE Journal Articles |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| An active noise barrier with unidirectional secondary sources.pdf | Main article | 555.75 kB | Adobe PDF |  View/Open |
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