Numerical simulation of scattering patterns of a sine-shaped surface (vor Ort)

* Presenting author
Day / Time: 24.03.2022, 14:20-14:40
Room: 47-01
Typ: Regulärer Vortrag
Session: Raumakustik 2
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Abstract: The acoustic scattering of surfaces is crucial for acoustic simulations in rooms or urban spaces. The sound propagation is usually calculated by using geometrical simulation methods and random-incidence scattering coefficients. In a running project, new approaches towards angle-dependent scattering metrics are defined and investigated. With this, it is aimed at more reliable simulation tools with directional information of scattering surfaces such as for sound steering. In this paper, scattering patterns of sine-shaped surfaces are simulated for various angles of incidence using the Boundary Element Method (BEM). Furthermore, the random-incidence scattering coefficient is calculated based on the scattering patterns of the surface and compared with measurement results based on ISO 17497-1 and on analytical calculations. This work will lead to the design of an experimental setup for arbitrary indoor and outdoor surface shapes.