04 74 09 93 20 
info@creacoustic.fr 
82 Rue Henri Depagneux 69400 Limas
Caractéristique intrinsèque d’une paroi mesurée en laboratoire. Rw+C : Indice pondéré pour les bruits intérieurs (spectre rose). Rw+Ctr : Indice pondéré pour les bruits de trafic (spectre routier, riche en basses fréquences).
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