From concert halls to noise barriers : attenuation from interference gratings

Davies, WJ ORCID: 2002, From concert halls to noise barriers : attenuation from interference gratings , in: Acoustics 2002, 25-27 March 2002, Salford, Greater Manchester.

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The seat dip effect is a low-frequency attenuation affecting sound travelling at grazing incidence over seating in auditoria. It is caused by scattered sound from the seats interfering with sound travelling directly from the source on the stage. In outdoor noise control, the simple single noise barrier gives good attenuation at high frequencies, but is limited by diffraction at low frequencies. This paper presents some results from an attempt to exploit seat dip attenuation as a tool to control outdoor noise propagation. Boundary element calculations are used to explore the effects of multiple low barriers, trenches, scaling and geometry.

Item Type: Conference or Workshop Item (Paper)
Themes: Built and Human Environment
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre
Journal or Publication Title: Proceedings of the Institute of Acoustics
Publisher: Institute of Acoustics
Refereed: Yes
Funders: Non funded research
Depositing User: W. J. Davies
Date Deposited: 03 Dec 2012 14:09
Last Modified: 16 Feb 2022 08:47
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