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dc.contributor.authorMitchell, Bruce Wayneen_US
dc.date.accessioned2014-03-14T21:49:43Z
dc.date.available2014-03-14T21:49:43Z
dc.date.issued1975en_US
dc.identifier.otheretd-11152013-040207en_US
dc.identifier.otheretd-12162013-141640en_US
dc.identifier.urihttp://hdl.handle.net/10919/45712
dc.description.abstractEquations were derived to calculate the reflection points of acoustic rays emanating from a source to a receiver. Reflection points for up to three reflections could be determined if the location of the source, receiver and all reflecting surfaces were known. Assuming a point source, the distances along the calculated ray paths were used along with the power level of the source and the absorptive characteristics of all the reflecting surfaces to determine the sound pressure levels at specified receiver locations. A computer program was developed to perform the necessary calculations for reflection points and sound pressure levels. The output was in the form of ray tracing plots which showed the unique reflection paths for up to three reflections and the sound pressure levels at each receiver location. Comparisons were made between predicted and calculated sound pressure levels in a rectangular parallelopiped shaped room and a long narrow hallway. The results of this investigation showed a promising potential in the area of sound pressure level predictions and the use of ray tracing plots to provide a means of reducing the sound pressure levels. A particularly interesting point of the program was its ability to handle very irregularly shaped rooms which include slanted surfaces.en_US
dc.format.mediumBTDen_US
dc.publisherVirginia Techen_US
dc.relation.haspartLD5655.V855_1975.M585.pdfen_US
dc.subject.lccLD5655.V855 1975.M585en_US
dc.titleDetermination of acoustic ray paths in enclosed spacesen_US
dc.typeThesisen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMechanical Engineeringen_US
dc.contributor.committeechairHurst, Charles J.en_US
dc.contributor.committeememberRobertshaw, Harry H.en_US
dc.contributor.committeememberMitchell, Larry D.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11152013-040207/en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12162013-141640/en_US
dc.date.sdate2013-11-15en_US
dc.date.rdate2013-11-15
dc.date.adate2013-11-15en_US


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