Interestingly most tuned instruments have overtones based on the harmonic series, however some percussion instruments such as bells have overtones based on minor thirds, people have also designed bells with major third overtones.
from wikipedia:
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The untrained human ear typically does not perceive harmonics as separate notes. Instead, they are perceived as the timbre of the tone. In a musical context, overtones that are not exactly integer multiples of the fundamental are known as inharmonics. Inharmonics that are not close to harmonics are known as partials. Bells have more clearly perceptible partials than most instruments. Antique singing bowls are well known for their unique quality of producing multiple harmonic overtones or multiphonics.
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Harmonic - Wikipedia, the free encyclopedia
this was an interestin article on harmonics in bells too:
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however if your essay is for a recording course as opposed to a physics or even music course then this will probably be beyond it, they will be looking more for how drum tuning effects the way drums gel in a recording
narco