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- W2068873369 abstract "This paper presents an investigation into the representation of fittings for the computer prediction of sound propagation in enclosed spaces using a mathematical model. The ray-tracing model, RAYCUB, was used for the investigation with three representations — additional floor absorption, isotropic zoning of statistical fittings, and floorzoning of statistical fittings. Validations of the three representations in six fitted laboratory cases demonstrated that floor zoning produced, on average, more accurate predictions than isotropic zoning, which was more accurate than the additional floor absorption representation. The measured sound propagation in the laboratory cases, configured with an absorptive ceiling, showed how the sound level can be doubly affected by the scattering from the fittings, both by backseattering at nearest positions to the sound source, and at the middle distances, given the dimensions of the room and the relative positions of the source and receivers. Using a simplified example of the laboratory space, it was shown why the Isotropic Zoning representation under-predicted the sound level compared to the Floor Zoning representation. Thus, the value of accurately representing the location of fittings was demonstrated." @default.
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- W2068873369 title "The representation of fittings in the computer prediction of sound propagation in enclosed spaces" @default.
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- W2068873369 doi "https://doi.org/10.1016/s0003-682x(97)00008-x" @default.
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