04 74 09 93 20 
info@creacoustic.fr 
82 Rue Henri Depagneux 69400 Limas
Intervalle entre deux fréquences dont le rapport est égal à 2. Le spectre audible est classiquement découpé en octaves (63, 125, 250… 8000 Hz) pour les besoins de l’ingénierie acoustique.
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