An Angular Diffusivity Geometrical Model To Predict Urban Sound Diffusion
Author(s)
P. Woloszyn
Abstract
An angular diffusivity geometrical model to
predict urban sound diffusion
P. Woloszyn
Cerma Lab., UMR CNRS 1563, Nantes, France
Abstract
With taking part of an interdisciplinary CNRS research program, we intend to
constitute a simulation tool for complex urban soundscapes. For this purpose, we
aim to quantify the urban diffusion factor, related to the surface roughness
distribution of the urban frontages, taking into account its volume location and
its specular surface distribution. Characterization of this distribution leads us to
use a fractal technique for modeling the complexity of urban surfaces, through
developing a unique method based on Minkowski's operators. The
generalization of this measurement technique through the three dimensions of
the urban shape provides an angle-dependent diffusive polar response for urban
frontages. In order to perform an experimental validation of this angle dependent
scattering characterization model, we attempt to define an MLS multisensor
method of measu
Keywords
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