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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>David:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>As Dr. Sanderson has shown from tests he has made that doing unisons-as-you-go
allows for a smaller overpull, and a more stable end result. Of course I think
pitch raising is one of the big advantages of using an ETD. When I was tuning
strictly aurally, I couldn’t get nearly as satisfactory a result as I can
now using TuneLab Pocket. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>dave<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'>David M. Porritt</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'><a href="mailto:dporritt@smu.edu">dporritt@smu.edu</a></span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> pianotech-bounces@ptg.org
[mailto:pianotech-bounces@ptg.org] <b><span style='font-weight:bold'>On Behalf
Of </span></b>David Nereson<br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, July 09, 2006 6:56
AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">Pianotech
List</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: post pitch-raise
creep?</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<blockquote style='margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> pianotech-bounces@ptg.org
[mailto:pianotech-bounces@ptg.org]<b><span style='font-weight:bold'>On Behalf
Of </span></b>Farrell<br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, July 07, 2006 6:04
AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">Pianotech
List</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: post pitch-raise
creep?</span></font><o:p></o:p></p>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Doesn't sound right. When doing the PR, are you using an
ETD? </span></font><font face=Arial><span style='font-family:Arial'> </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=4 face=Arial><span style='font-size:13.5pt;
font-family:Arial'>Only to measure the amount it's flat and to tune the initial
A4 sharp by 40% of the amount it was flat.</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> Unisons as you go? </span></font><font
face=Arial><span style='font-family:Arial'> </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=4 face=Arial><span style='font-size:13.5pt;
font-family:Arial'>No. All the middle strings, then all the unisons, then
the bass, which sometimes needs very little raising. I can do it fastest
that way. </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'> 41% is very large percentage for overpull. Most ETDs
recommend between 20% and 35%, depending on the area of the scale. </span></font><o:p></o:p></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=4 face=Arial><span style='font-size:13.5pt;
font-family:Arial'>And I say that's usually not enough. If it's 20 cents
flat, half of that (50%) is 10 cents, and a third of that (33%) is
about 7 cents. So I pull A4 halfway in between those numbers, or about 8
1/2 cents sharp, which is roughly 40% of the amount it was flat. (I
notice in other posts, some tuners use up to 37% in some areas of the
piano.) Then I do the pitch raise, all the octaves, then all the
unisons. Almost every time, A4 ends up right on 440, and the rest of
the rough tuning is very close. So I go ahead and do the
tuning (fine tuning). It's after I'm done with the fine tuning, when I go
back to check for anything that has slipped, that I find the middle of the
piano and the low tenor has crept sharp by a beat or even two. </span></font><o:p></o:p></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Immediately after the PR, do you check the middle section for
pitch? </span></font><font size=4 face=Arial><span style='font-size:13.5pt;
font-family:Arial'> </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=4 face=Arial><span style='font-size:13.5pt;
font-family:Arial'>Yes, and it's almost always right on 440, so I proceed with
the fine tuning. It's after the fine tuning that I find it has crept
sharp in the middle. The low tenor is also quite sharp, so now I leave
that area a bit flat during the pitch raise. And during the tuning (fine
tuning), the SAT always seems to "tune" the bass too flat, even if
the bass didn't need a pitch raise. </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> If it is at or near target, there is no reason for it
to creek up. </span></font><font size=4 face=Arial><span style='font-size:
13.5pt;font-family:Arial'> </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=4 face=Arial><span style='font-size:13.5pt;
font-family:Arial'>One wouldn't think so. </span></font><o:p></o:p></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'> How large a pitch gain are you talking about? </span></font><font
size=4 face=Arial><span style='font-size:13.5pt;font-family:Arial'> </span></font><o:p></o:p></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=4 face=Arial><span style='font-size:13.5pt;
font-family:Arial'>Anywhere from just a few beats flat to a half-step flat.</span></font><o:p></o:p></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'> I've never noticed such a phenomena.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<div>
<p class=MsoNormal><font size=4 face=Arial><span style='font-size:13.5pt;
font-family:Arial'>That's "phenomenon." Phenomena is plural.</span></font><font
face=Arial><span style='font-family:Arial'> </span></font><font size=4
face=Arial><span style='font-size:13.5pt;font-family:Arial'>(Just for your own
info.)</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=4 face=Arial><span style='font-size:13.5pt;
font-family:Arial'>--David Nereson, RPT</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Terry Farrell</span></font><o:p></o:p></p>
</div>
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margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
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<p class=MsoNormal><font size=4 face=Arial><span style='font-size:13.5pt;
font-family:Arial'> </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
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