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Drum Science
This category relates to the science of drums

Drum Shell Construction

  This section will attempt to explain how the physical characteristics of a drum shell effect the sound of a drum. Please take into consideration all the things explained in the drumhead section, when contemplating all this. Also keep in mind that the when making the following comparisons, there has been no consideration for what type of head is being used. In other words, it's all relative. A drumshell with physical characteristics causing it to have maximum resonance, will of course be offset by a drumhead combination designed to muffle. Get it?

 I would like to give credit to Gene Okamoto and David Howe of Pearl Drums for giving permission to use information from their web site for this page. If you want to check out their site, it's at:

Reinforcement Rings

Reinforcement Rings

John Van Ness - DW Drum Co © 1999

 The original purpose of re-inforcing hoops was to maintain the structural integrity of the shell (keep it round). But they also serve a purpose in changing the shell's acoustic properties.

Helmholtz Resonators

or... Where does all that bass come from???

Taken from a posting on the Yahoo Goblet Drumming group and therefore refers to the darbouka and tonbak drums but can also be applied to Djembes and any other goblet-shaped drums

 In laymans terms, there are two things going on with goblet drums. First, there is a membrane that vibrates (the head) and causes sounds. In doumbek-speak, this would be your "tek" and "ka" sounds.

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