Virginia Tech. Department of Mechanical EngineeringHurst, Charles J.Mitchell, Larry D.2015-05-272015-05-271976Hurst, C. J. & Mitchell, L. D. (1976). Sound transmission between absorbing parallel planes. Journal of the Acoustical Society of America, 60, S9-S9. doi: 10.1121/1.20036440001-4966http://hdl.handle.net/10919/52655Partially absorbing parallel surfaces can be dominant acoustical feature of many rooms. The sound fields in such rooms are not diffuse, which causes difficulty in predicting sound pressure levels. A method is developed for predicted sound pressure levels in these rooms. It rests on the prediction of sound pressure levels caused by a nondirectional source of known sound power radiating between absorbing parallel planes. The development proceeds from a geometrical acoustics viewpoint. Good correlation has been found between predicted and measured levels in existing rooms having simple geometries. [Work supported by NSF.]1 pageapplication/pdfen-USIn CopyrightSound pressureAcoustic transmissionAcoustic wavesSound power levelsAbstracthttp://scitation.aip.org/content/asa/journal/jasa/60/S1/10.1121/1.2003644https://doi.org/10.1121/1.2003644