04 74 09 93 20 
info@creacoustic.fr 
82 Rue Henri Depagneux 69400 Limas
Phénomène d’interférence entre l’onde sonore directe et l’onde réfléchie par le sol. Selon la porosité du terrain (herbe vs goudron), certaines fréquences peuvent être naturellement atténuées ou amplifiées.
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