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Investigation of the transmission of sound over simplified models of theater seats using boundary element analysis simulations
Abstract
The previous experimental and analytical investigations of the transmission of sound over theater seats are reviewed. The mathematical foundation of the Boundary Element Analysis (BEA) methodology is presented and the software implementation of a mesh-generating program for a simplified model of a seating surface is introduced. Simulations are performed in the near field case, where the receiver is placed close to the surface for a flat plate and for a simplified model of a seating. The acoustic response is derived for a range of incident angles and receiver heights over various seating configurations. The results are compared to the experimental data obtained by others, and suggest that the "seat dip effect" is primarily due to an interference phenomenon at the observation point between the direct field and the field reflected from the floor. The seats located behind the receiver appear to contribute to the response, thus suggesting new guidelines for future experiments. An assessment of the BEA methodology for this class of acoustic scattering problems is performed, and a comparison of the simulation results to those obtained with an analytical method is presented. Future relevant research work in this area is proposed.
Subject Area
Acoustics|Architecture
Recommended Citation
Cheene, Dominique Joseph, "Investigation of the transmission of sound over simplified models of theater seats using boundary element analysis simulations" (1995). ETD collection for University of Nebraska-Lincoln. AAI9528818.
https://digitalcommons.unl.edu/dissertations/AAI9528818