----- Original Message ----- From: "Fred Sturm" <fssturm at unm.edu> >I wasn't wanting to assert that this was an extraordinarily precise >experiment (determining that 10F drop in temp = 2 cents rise in pitch), >just that the observations I made were suggestive. I was more interested >myself in the fact that the pitch changed in this case pretty much as a >whole, without distortion across the scale. I would have expected more >variance, say between plain and wound strings, or between long and short >ones. And I wasn't trying to dispel your suggestion, but perhaps offer a possible explanation as to why you didn't get the variance you expected. What you expected isn't different from what I would have expected if the actual components of the piano would have changed temperature as the room air did. I've had stage managers complain about pitch change in the low tenor once the lights heated everything up, and it would take more than 2 cents in the low tenor to be noticeably different to "lay" people in these types of shows. I've seen larger differences myself with no more than 10 degree temp changes. So, I'd have to agree that I would expect a different result. Jeff
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