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ANNEXE A
Guide du placement d’un caisson de basse
- 18 -
La différence est difficile à voir à ce niveau d’échelle, nous avons donc fait un
agrandissement ci-dessous. La première image est la courbe originale, la seconde
est la courbe après avoir décalé le caisson d’une trentaine de centimètres.
Différence entre les courbes et les paramètres :
- les fréquences de coupure du filtre passe-bas sont identiques mais la
pente originale du filtre est de 30 dB, alors qu'elle est de 24 dB sur la
seconde.
Notez l’augmentation de niveau d’environ 1 dB entre 20 et 50 Hz. Ceci démontre
qu’un léger déplacement du caisson de basses peut grandement améliorer la
performance des basses.
19


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