I'll second what Carl said. One pass for anything within about 50 cents should yield a stable, very close tuning, acceptable to pretty much everybody (not quite recording studio, but maybe even that - I did a one pass 20 cent raise for a recording studio a couple weeks ago. Of course, a recording studio that would allow a 20 cent swing isn't absolutely top drawer). I would usually go back through and refine unisons a bit, those that needed it. But my norm is one pass, and that's at a high level of quality.
Pianos at the university are all typically 20-50-70 cents sharp beginning of every fall semester (and then drop in pitch fairly steadily through about February). Once upon a time I did two passes, and a lot of them (string rendering issues, false beats) would take as much as 2.5 hours. Today, it is one hour per piano, and the results are far better, and the tunings last until the RH goes south, with minor exceptions. The caveat is tuning technique, which needs to hone in directly to the stable spot for the pin and string, and that is something that is not easy to come by. But that skill is easier to acquire, IMO, using an ETD.
So pitch raise is pretty much a non-issue for me, until you get to 100 cents plus. Even then, it's no big deal.
I guess I'll add that I never did a real speedy first pass (again echoing what Carl was saying), but instead of a 10 - 15 minute "quickie" that some describe, more like a 30 - 40 minute "not sweating the details too much" but making sure it was solid. And I think that was a better approach, comparing my experiences with what I hear others discussing.
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Fred Sturm
University of New Mexico
fssturm@unm.edu http://fredsturm.net "The true sign of intelligence is not knowledge, but imagination." - Einstein
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Original Message:
Sent: 04-04-2013 12:12
From: Carl Lieberman
Subject: pitch raise
Greetingts,
Full disclosure, I work for CyberTuner.
In the modern world, computing power has solved the complexity of pitch correction. The entire concept of a rough "pitch raise" followed by a fine tuning is an artifact of older limitations in tuning. The idea is to build stability into a piano. Every tuning should end up as close as possible to "in tune". A fast pitch correction that vaguely approximates "in tune" is not enhancing stability. Currently, CyberTuner will get you to "in tune" in one tuning from 20 cents away. You always have the option of doing a second very fine tuning.
I understand that not everyone wants to use CyberTuner. But really, all of these "seat of the pants" methods of correcting pitch are anachronistic.
My tempered 2 cents worth;-)
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Carl Lieberman
Venice CA
310-392-2771
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Original Message:
Sent: 04-04-2013 02:17
From: Kym Ng
Subject: pitch raise
Hi Friends,
Just wonder, in general, how do you justify if 2 or more pitch correction passes are needed in one service appt?
How much pitch drop?
Age of the piano?
Rusty strings?...etc.
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[Kym] Ng]
[CharisTune Piano Service]
[San Jose] [CA]
[kym@charistune.com]
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