On 10/28/16 5:03 AM, Bob Camp wrote:
Hi
If you look at the mode shapes for the various overtones, their energy
maxima are at different locations on the blank. If you put an electrode on
top of the 3rd overtone energy pattern (and avoid the fundamental pattern)
you will boost the 3rd and reduce the fundamental. You can actually find
examples of this in production.
A more aggressive approach would be to “sort circuit” the fundamental energy
so that the fundamental went down even further. While it can be done, I have
never seen a production example of doing this.
Fascinating.. this is similar to the reason piano hammers strike 1/7th
of the way from the end of the string - to suppress that particular
overtone, which is dissonant.
And, the whole "playing a harmonic" on a guitar is exactly what you're
talking about with picks replacing electrode positions..
https://www.guitarlessonworld.com/lessons/harmonics/ is the first hit I
got on google and explains it.
There's all sorts of harmonic maps for guitar (where to pluck or push)
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