Diffusive benefits of cylinders in front of a Schroeder diffuser

Pogson, MA; Whittaker, DM; Gehring, GA; Cox, TJ; Hughes, RJ; Angus, JAS

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.

Citation

Pogson, M., Whittaker, D., Gehring, G., Cox, T., Hughes, R., & Angus, J. (2010). Diffusive benefits of cylinders in front of a Schroeder diffuser. ˜The œJournal of the Acoustical Society of America (Online), 128(3), 1149-1154. https://doi.org/10.1121/1.3463817

• Journal Article Type: Article
• Publication Date: Sep 1, 2010
• Deposit Date: Oct 20, 2011
• Publicly Available Date: Apr 5, 2016
• Journal: The Journal of the Acoustical Society of America (JASA)
• Print ISSN: 0001-4966
• Peer Reviewed: Peer Reviewed
• Volume: 128
• Issue: 3
• Pages: 1149-1154
• DOI: https://doi.org/10.1121/1.3463817
• Publisher URL: http://dx.doi.org/10.1121/1.3463817
• Additional Information: Funders : Engineering and Physical Sciences Research Council (EPSRC)