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Reducing seat dip attenuation

Davies, WJ and Cox, TJ 2000, 'Reducing seat dip attenuation' , The Journal of the Acoustical Society of America (JASA), 108 (5) , pp. 2211-2218.

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    Abstract

    Strategies fur reducing seat dip attenuation in concert halls are considered. It is shown that the dip is established 4 ms after the direct sound from the stage arrives at the listener. Sound scattered from the seats and floor is the main cause of the dip. By controlling these very early reflections the attenuation can be reduced to below its subjective threshold. With this in mind, changes to the shape and impedance of the seats and floor are trialed using a boundary element model and a physical scale model. It is found that the seat dip effect can be rendered inaudible by introducing a l-m pit under the seats. Smaller improvements are produced by changing the impedance of the seat squab. (C) 2000 Acoustical Society of America.

    Item Type: Article
    Additional Information: 1 372GR J ACOUST SOC AMER
    Uncontrolled Keywords: sound fields
    Themes: Built and Human Environment
    Schools: Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Acoustics Research Centre
    Journal or Publication Title: The Journal of the Acoustical Society of America (JASA)
    Publisher: Acoustical Society of America
    Refereed: Yes
    ISSN: 0001-4966
    Depositing User: Dr W. J. Davies
    Date Deposited: 13 Jul 2012 15:44
    Last Modified: 20 Aug 2013 17:00
    URI: http://usir.salford.ac.uk/id/eprint/2438

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