#31
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Quote:
Other motions will come into play and, as you say, have a greater effect on the tone of the sound. |
#32
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Very interesting information would be gathered from mounting a 3-axis accelerometer placed on the bridge and (separately) the saddle. Icing on the cake would be some accels on the soundboard too. I'm not sure what the full scale range should be, but there are triple-axis accels available that weigh a few grams, and are 3-4mm (.11") square. I'm sure someone has done this testing before (published papers, etc...).
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#33
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I did some work with a small accelerometer at one point. Basically, it showed that a given force perpendicular to the soundboard gives you the most motion. Force parallel to the string axis (such as the 'tension change' and 'zip' signals) produces much less motion, and only becomes effective around the long dipole pitch. Force across the bridge does't do much.
A lot of this information is on my web site in a .pdf entitled 'String Theory' ( I couldn't resist). It's on the 'Acoustics' page. That was work I did some time ago, and I'm working on refining the data on that as I can. |