Interesting article

Ron Nossaman RNossaman@KSCABLE.com
Sat, 08 Apr 2000 23:33:28 -0500


>Now to the other subject of single strings exhibiting a difference of pitch
>from three strings which are tuned identically. In my studies, I found 
>that this difference exhibits itself more in the 5th and early 6th 
>octave on the piano and not as much elsewhere. I have not found 1 and 2 
>cent variances as some have claimed. What are your findings? I find 
>greater differences between the pitches of the prompt sound and the 
>later decay sound (the TuneLab shows this quite clearly). It is easy to 
>confuse these two sources.
>
>Jim Coleman, Sr.


Hi Jim, good to see you again (you look great). I did a few quick and dirty
checks a couple of months back and found something similar. The big
difference I saw was in the duration of the attack pitch rise. As the
second and third strings were tuned in, the attack duration shortened. My
budget has just come around to my way of thinking to the point where I can
justify buying a laptop so I'll have some tools to chase this effect some
more. The fact that the effect is most noticeable in the "killer octave"
strikes me as way too juicy a coincidence to ignore. I'm speculating that
the same low soundboard impedance and/or resonant frequency in that area
is, if not responsible, at least contributory. I really don't have a clue
how to prove it at this point, but I don't have a body of evidence to draw
on yet either. I guess it will depend on what I find when I start digging.
Time will tell... or not.

Ron N


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