Fundamental Cases of Urban Acoustics and Their Interaction with Propagating Sound: Phase II

Report No. ARL-TR-5285
Authors: W. C. Kirkpatrick Alberts, II, Mark A. Coleman, and John M. Noble
Date/Pages: September 2010; 22 pages
Abstract: An ongoing U.S. Army Research Laboratory (ARL) effort to study fundamental cases of urban acoustics with the goal of enhanced prediction capabilities found that, in Phase I of the study, a single-story isolated building can be adequately described, in some instances, as a wide barrier of finite length. The structure investigated during Phase I was a small, architecturally simple, gabled-roofed building typical of suburban and rural residential housing. To expand upon the first phase, Phase II investigates a large, semi-isolated, multi-faceted building of cinder block construction typical to urban areas. Comparisons between the experimental results of the second phase and the models used in describing the first phase reveal that the interaction of propagating sound with the geometrical complexity of the Phase II structure cannot be successfully described using diffraction models commonly used with sound propagation over barriers.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2010