Sound of a drum

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Several factors determine the sound a drum produces, including the type of shell the drum has, the type of drumheads it has, and the tension of the drumheads. Different drum sounds have different uses in music. For example, a jazz drummer may want drums that sound crisp, clean, and a little on the soft side, whereas a rock and roll drummer may prefer drums that sound loud and deep. Because these drummers want different sounds, their drums will be constructed differently.

The drumhead has the most effect on how a drum sounds. Each type of drumhead serves its own musical purpose and has its own unique sound. Thicker drumheads are lower-pitched and can be very loud. Drumheads with a white plastic coating on them muffle the overtones of the drumhead slightly, producing a less diverse pitch. Drumheads with central silver or black dots tend to muffle the overtones even more. And drumheads with perimeter sound rings mostly eliminate overtones (Howie 2005). Some jazz drummers avoid using thick drumheads, preferring double ply drumheads or drumheads with perimeter sound rings. Rock drummers often prefer the thicker or coated drumheads.

The second biggest factor affecting the sound produced by a drum is the tension at which the drumhead is held against the shell of the drum. When the hoop is placed around the drumhead and shell and tightened down with bolts, the tension of the head can be adjusted. When the tension is increased, the amplitude of the sound is reduced and the frequency is increased, making the pitch higher and the volume lower.

The type of shell also affects the sound of a drum. Because the vibrations resonate in the shell of the drum, the shell can be used to increase the volume and to manipulate the type of sound produced. The larger the diameter of the shell, the lower the pitch of the drum will be. The type of wood is important as well. Birch generates a bright, crisp, and clean sound, maple reproduces the frequency of the drumhead as it resonates and has a warm, wholesome sound that is quite pleasing to the ear, while mahogany raises the frequency of low pitches and keeps higher frequencies at about the same speed. When choosing a set of shells, a jazz drummer may want smaller maple shells, while a rock drummer may want larger birch shells. For more information about tuning drums or the physics of a drum, visit the external links listed below.

[edit] External links

• a drummer’s site which discusses the physics if a drum and tuning and other related things
• a site that discusses the concept of resonance in sound and gives some examples and experiments dealing with resonance
• a site that has plenty of information and diagrams relating to the physics of drums

[edit] Works Cited

• Howie. 2005. Tuning. Available from: <http://www.drummingweb.com/tuning.htm#Heads> via the worldwide web. Accessed 2005 Apr 22.
• Johnson. 1999. Drum Woods. Available from: <http://home.earthlink.net/~prof.sound/id14.html> via the worldwide web. Accessed 2005 Apr 22.