WIT Press


An Angular Diffusivity Geometrical Model To Predict Urban Sound Diffusion

Price

Free (open access)

Paper DOI

10.2495/AC030031

Volume

69

Pages

10

Published

2003

Size

639.15 kb

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