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Diffusive benefits of cylinders in front of a Schroeder diffuser

Pogson, MA, Whittaker, DM, Gehring, GA, Cox, TJ, Hughes, RJ and Angus, JAS 2010, 'Diffusive benefits of cylinders in front of a Schroeder diffuser' , The Journal of the Acoustical Society of America (JASA), 128 (3) , pp. 1149-1154.

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    Abstract

    A numerical investigation is performed into the diffusive effects of cylinders positioned in front of a Schroeder diffuser. A regular line of cylinders is shown to offer notable improvements to diffusion from a periodic Schroeder device, provided lateral cylinder spacing is incommensurable with the Schroeder period width. Further investigation considers angular dependence and low frequency results in greater detail, as well as the effects on narrowband and modulated Schroeder devices. An optimization procedure is subsequently performed to investigate the effects of an irregular cylinder arrangement, which provides further diffusive benefits. (C) 2010 Acoustical Society of America.

    Item Type: Article
    Themes: Built and Human Environment
    Schools: Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Acoustics Research Centre
    Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
    Journal or Publication Title: The Journal of the Acoustical Society of America (JASA)
    Publisher: Acoustical Society of America
    Refereed: Yes
    ISSN: 0001-4966
    Funders: Engineering and Physical Sciences Research Council (EPSRC)
    Depositing User: TJ Cox
    Date Deposited: 20 Oct 2011 15:30
    Last Modified: 23 May 2014 14:53
    URI: http://usir.salford.ac.uk/id/eprint/18563

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