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M3P2
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f07f67dd
Commit
f07f67dd
authored
May 03, 2023
by
Claude Meny
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Update 12.temporary_ins/69.waves/30.n3/30.beyond/annex.fr.md
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12.temporary_ins/69.waves/30.n3/30.beyond/annex.fr.md
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f07f67dd
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@@ -71,7 +71,7 @@ $`\newcommand{\ddpt}[1]{\overset{\large\bullet\bullet}{#1}}`$
!
</summary>
!
* Les *
ondes sonores
* humainement audibles couvrent le domaine de fréquence *
$
`\nu\in[20\,Hz\,;\,20\,000\, Hz]`
$
*
. La célérité du son dans
! l'air au niveau du sol étant d'environ
*$`\mathscr{v}=340 m/s`$*
, les longueurs d'ondes sonores couvrent le domaine
!
*$`\lambda=\mathscr{v}T=\dfrac{\mathscr{v}{\nu} \in [17\,cm\,;\,17\,m]`$*
.
!
*$`\lambda=\mathscr{v}T=\dfrac{\mathscr{v}
}
{\nu} \in [17\,cm\,;\,17\,m]`$*
.
!
*
Ce domaine de longueur d'onde recouvre le domaine de taille caractéristique de pièces d'une maison,
! salles de spectacles ou locaux industriels, de leurs ouvertures (portes et fenêtres), et des objets
! qu'ils contiennent (meubles, sièges et machines). Les
*phénomènes ondulatoires*
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