Numerical simulation and analysis of surface scattering part 1

Convention of the European Acoustics Association Forum Acusticum, pp. 851–856

Abstract

Absorption and scattering coefficients of surfaces are crucial for simulations in room acoustics and outdoor sound propagation.Because of the poor availability of data, scattering coefficients are among the most uncertain quantities in the simulation chain.In this work, we use an established free-field measurement approach and introduce this for a numerical framework to determine the scattering pattern.It is based on the open-source software Mesh2HRTF, which uses the fast multipole boundary element method, FM-BEM.Furthermore, the characteristics of scattering patterns of references surfaces, such as sine and rectangular shapes, and of specifically designed shapes of building facades are presented.

Authors 2

1. Lili Pan

   South China University of Technology · State Key Laboratory of Subtropical Building Science

   Affiliation as printed

   State Key Laboratory of Subtropical Building Science

   State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, China

2. Michael Vorländer Aachen Institute for Hearing Technology and Acoustics

   RWTH Aachen University

   Affiliation as printed

   Institute for Hearing Technology and Acoustics, RWTH Aachen

   Institute for Hearing Technology and Acoustics, RWTH Aachen University, Aachen, Germany