h a l f b a k e r y
The phrase 'crumpled heap' comes to mind.
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This would be a kit consisting of a tone generator, say, middle 'C', plus and minus several octaves to encompass the known range of the human voice, and a transducer attachment to the bridge of your nose. The piezoelectric transducer would send a signal from your nose to a simple harmonics detection
The procedure would be to hold your nose and, with open mouth, sing the tone generated by the tone generator. The tone generator would continue to provide tones for you to match in this manner until it detects an harmonic, which would then be recorded. Unless you detect a harmonic first.
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||this is a piss easy game. it plays a C, I sing the G above the next one. Viola! - I found the harmonic first. Can we play twister now?
||HABODICS HABODICS HABODICS
||There *must* be a simpler way. Hmm... OK, how's this: breathe water through your nostrils but not so far that it goes into your windpipe. Then emit the water into a measuring flask to get the volume. This gives the volume of your nasal cavity. Therefore the resonant frequency will be mV/2^0.5 for a non-uniform cylinder, and so the nth harmonic frequency will be given by Friedrich's Law, f(n) = m * f(0) * (n! / 2*PI*V)^2.
||[UnaB] - I was assuming a spherical cow, as it were.