G - Physics – 10 – D
Patent
G - Physics
10
D
G10D 13/02 (2006.01) G10K 11/04 (2006.01)
Patent
CA 2083038
A tuned port rigid baffle panel (1) which mounts to a drum opposite the beater drumhead membrane (23). The baffle panel (1) has a port (3) having an area specifically selected to tune the drum to a selected frequency. The tuned port (3) controls the radiation of sound waves (25) from the drum so that they emerge from the drum in phase with and additively with the sound waves (24) from the front of beater membrane (23) to control resonance and extend the low frequency response of the drum. Clips (10) mount the baffle panel (1) to the drum using the standard drum hardware.
Écran rigide à ouverture accordée (1) pour face de tambour opposée à la membrane (23). La grandeur de l'ouverture (3) de l'écran (1) est calculée pour faire résonner le tambour à une fréquence déterminée. L'ouverture (3) règle le rayonnement des ondes sonores sortant du tambour (25) de manière qu'elles soient en phase avec celles (24) qui partent de la surface avant de la membrane (23), afin de régler la résonance et d'accroître le rayonnement dans le domaine des basses fréquences. L'écran (1) est fixé au tambour au moyen de pinces (10) placées aux endroits habituels.
Genna Robert A.
Perley-Robertson Hill & Mcdougall Llp
LandOfFree
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