Hi Richard, I was wondering about this myself. Though I only noticed it when I started tuning unisons "as I go." The spot that goes up most in my case is the first treble section of a D on stage. The piano is usually within a few cents (or less) of 440 before tuning. Barbara Richmond, RPT ----- Original Message ----- From: "Richard West" <rwest1 at unl.edu> To: "College and University Technicians" <caut at ptg.org> Sent: Thursday, March 09, 2006 9:44 AM Subject: [CAUT] pitch rise > With the discussion of unison drift, I have a question which may be > related. What is the cause for pitch rise while tuning? I can > understand why the pitch might fall, especially if there's a significant > pitch change. But I'm not talking about a radical pitch alteration. > > Here's the scenario. I'm working on a newer or rebuilt piano with tight > pins and still relatively stretchy strings. I'm trying to stabilize the > instrument, but it's being stubborn. I'm having to be more aggressive > with my tuning technique, i.e., in order to settle the pitch I have to > first pull the string higher than I like in order to move the tight pin > and then allow the stretchy string to settle back to the pitch I want. > As I move up the piano, the pitch behind me tends to creep higher, > sometimes to the point I have to retune the note below. I'm not a > pounder, so I don't think that I'm beating the piano too hard. I'm not > trying to pitch raise/lower the piano, just give it a good solid tuning. > > What can I do to prevent this "phenomenon?" Does anyone else experience > this? What is the cause? > > Richard West > > > _______________________________________________ > caut list info: https://www.moypiano.com/resources/#archives >
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