Extended low frequency resonant structure for drumhead

Details Extended low frequency resonant structure for drumhead Extended low frequency resonant structure for drumhead

2011-04-26

2011-04-26

Lockett, Kimberly R (Department: 2832)

Music

Instruments

Drums

Reexamination Certificate

active

07932452

ABSTRACT:
A drum fitted with drum heads features easy adjustment and variation of low-pitched sound. The drum head is formed with one or more openings to which surrounds made of material the same as or different than the drum head itself is attached for an independent and localized vibration area. Alternatively, the drum head is formed with a successively corrugated local area that offers localized deformation of the drum head. Either one of the constructions of the drum head provides the drum head with an independent and resiliently deformable local surface whereby when the drum is struck, the air contained inside the drum is pressurized to cause the vibration of the independent local surface, effectively increasing the vibration amplitude of the local surface on the drum head and thus extending the sound of the drum to a lower level.

REFERENCES:
patent: 6172289 (2001-01-01), Shelley

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