Source: https://www.bruitparif.fr/pages/En-tete/600%20Mobiliser/500%20Pr%C3%A9vention/500%20Programme%20Kiwi/800%20Espace%20%C3%A9leves/Contenus%20p%C3%A9dagogiques/900%20Physique%20du%20son.pdf