For the purpose of numerical efficiency in room acoustic modeling, the physical theory of diffraction (PTD) is applied to approximate solutions of a finite-sized, rigid rectangular plate. The application of the PTD enables sound diffraction contributions from the two edge pairs of the rigid plate to be predicted separately while ignoring the edge waves around the corners in far-field. This paper discusses numerical implementations of the theoretical predictions to show the efficiency of the application of the PTD in finite-sized objects. The numerical results implemented will also be compared with preliminary experimental results carried out using an acoustical goniometer.
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April 30 2019
Sound diffraction prediction of a rectangular rigid plate using the physical theory of diffraction
Special Collection: Room Acoustics Modeling and Auralization
Aleksandra Rozynova, Ning Xiang; Sound diffraction prediction of a rectangular rigid plate using the physical theory of diffraction. J. Acoust. Soc. Am. 1 April 2019; 145 (4): 2677–2680. https://doi.org/10.1121/1.5095872
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