Don Rose writes: >Unfortunately inharmonicity does change with humidity levels. It makes a >significant difference on a SAT or RCT. The verituner would be even more >likely to show deviations as it does so much more measuring. I don't believe this has ever been demonstrated conclusively. Are you sure that most of the so-called inharmonicity variation is not due to measurement error? To see what I mean, get five techs together at the same time and let them each measure the inharmonicity of several strings on one piano. Let them use the same equipment, but don't let them watch each other as the measurements are taken. Then compare notes. The variations that you get in that experiment are not due to anything changing on the piano, but rather to the measurement process itself. Once that level of variation has been established, you can then go on to make measurements under different humidity conditions. If the variation you get is substantially greater than the baseline variation from the first experiment, then you will have proven something. Until then it is just speculation. -Robert Scott Detroit-Windsor Chapter
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