> >The effect of unisons changing as the 2nd and 3rd strings are pulled in > >a a phenonemon which applies more to the 5th and 6th octaves than in the > >temperament octave according to measurements which I have taken. Even in > >that range, on some notes the change is almost negligible. > > > >Jim Coleman, Sr. -------------------------------> > 5th and sixth octaves, huh? Killer octave, huh? Now you've got me curious > and I've got to try this on a couple of different soundboard designs. You > don't suppose... Impedance, fundamental resonant frequency? It seems to me > that all this almost certainly connects. Del, did you ever notice a > correlation here? Well, anyway, when I get some pianos up to take some > measurements from, I'll take notes and see if I can eventually make sense of > anything. > > Ron N > --------------------------------- No. But then I avoid tuning whenever possible these days. Take some measurements and think about it. The only thing I can think of right now is that compression-crowned soundboards do tend to collapse fairly rapidly through this region. Del
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