Acoustic performances analysis of a composite system for noise barriers specific to road traffic

Résumé

This paper presents the interaction model of acoustic waves from road traffic and noise barrier made of light materials, without inertial effects, by establishing sound absorption coefficient depending on the frequency, for a number of samples, thus setting sound absorption capacity for each material made from absorbent materials. In this context, it is sets the acoustic attenuation capability of a simple panel made of light elements (elements with low density) function on the geometry elements, structural elements, position elements and propagation of road traffic noise.