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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: Not really as far fetched as one might think at first posted by Analog Scott on January 24, 2007 at 13:33:40:
Hi
Several thoughts come to mind.
At what point do these harmonic overtones become lost?
Also a minor complication or two exists in the products explanation.Things like Bells, plates, disks, cymbals and such do not ring in regular musical overtones generally.
Complex shapes vibrate in 3d and so have many modes, few if any of which are musically related. If one were to excite such a resonator it would not sound like your music it would sound like a metallic bell at best.
Part two, such a structure cannot be set into resonance unless force is non-uniformly applied to generate the needed differential force. This means that for frequencies which have a quarter wavelength or greater compared to the diameter, there is no airborne excitation possible as pressure is uniformly applied.
There is a poor energy transfer from air to solid materials because of a large impedance mismatch. For example, 132 dB only applies a peak pressure of about 2 pounds per square foot so the excitation force is very small which means the sound it could produce would be far softer than the excitation sound.
Best,Tom
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Follow Ups
- Re: Not really as far fetched as one might think at first - tomservo 13:57:25 01/24/07 (1)
- Re: Not really as far fetched as one might think at first - Analog Scott 09:16:27 01/26/07 (0)
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