This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: Jonathan Finger=20 To: 'Pianotech'=20 Sent: Thursday, January 23, 2003 10:43 PM Subject: RE: close enough>?? Hi there all, If I'm moving pitch more than 8-10 cents, then I will do a pitch = raise, and tune uisons as I go. I do this with both a strip, and a rubber mute. I tune with the pocket RCT, so typically I am able to tune chromatically up from A0. Like I said, with a pitch raise I pull = sharp, usually a bit sharper in the treble, and less in the bass. It has = been my experience that the treble will drop more than the standard 25%, = and that the bass will drop less than this amount. =20 I will do a seperate pass if the piano is as little as 2 cents = off. My experience has shown me that the bass will need a 20 percent = overcorrection, and this puts it right on the money almost every time. If I must do a pitch raise, I try to do it as quickly as possible, knowing that I will be redoing a good portion of it. This usually = takes a 1/2 hour (or so). Surprisingly, many times on the 2nd time through, I'm only moving maybe 30%. This means that the second time through, even though it's a "fine tuning" doesn't take all that long, and the entire process is usually done within an hour and a half. =20 That's what I've found, also.=20 Somewhat off topic (or is it) ... I remember Virgil Smith doing a = study here once where he showed that tuning unisons caused the pitch level = of the note to drop. I believe it was something like 1-2 cents. (anyone know what I'm talking about, or have I gone mad?) I saw that demonstration too. In our class, it could be = demonstrated by hearing the beat rate of the third tenth octave check, = but they had trouble measuring it with a machine. Kevin E. Ramsey Jonathan Finger RPT. Boulder Chapter, PTG ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/3b/f9/a2/a7/attachment.htm ---------------------- multipart/alternative attachment--
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