<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 11 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]--><o:SmartTagType
namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="State"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="City"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="place"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="PersonName"/>
<!--[if !mso]>
<style>
st1\:*{behavior:url(#default#ieooui) }
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"\@SimSun";
panose-1:0 0 0 0 0 0 0 0 0 0;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
p.MsoEnvelopeAddress, li.MsoEnvelopeAddress, div.MsoEnvelopeAddress
{margin-top:0in;
margin-right:0in;
margin-bottom:0in;
margin-left:2.0in;
margin-bottom:.0001pt;
mso-element:frame;
font-size:12.0pt;
font-family:Verdana;}
p.MsoEnvelopeReturn, li.MsoEnvelopeReturn, div.MsoEnvelopeReturn
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:Arial;}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:blue;
text-decoration:underline;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:Verdana;
color:black;
font-weight:normal;
font-style:normal;
text-decoration:none none;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.25in 1.0in 1.25in;}
div.Section1
{page:Section1;}
-->
</style>
</head>
<body lang=EN-US link=blue vlink=blue>
<div class=Section1>
<p class=MsoNormal><font size=2 color=black face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:black'>I think you’re
right on, John. When I worked at the university here, I came to think of this
as “average A440”. In temperate climates with wide humidity swings,
A440 is a moving target. It seems to me that in many, if not most, situations
we need to focus more on keeping the pitch close and the intervals sounding as
good as possible. Once I got tired of chasing absolute pitch around the seasons
and changed to this approach (in combination with humidity control where
possible), I was much happier and so were my fussy clients. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:black'>Kerry Kean<o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=2
color=black face=Verdana><span style='font-size:10.0pt;font-family:Verdana;
color:black'>Kent</span></font></st1:City><font size=2 color=black
face=Verdana><span style='font-size:10.0pt;font-family:Verdana;color:black'>, <st1:State
w:st="on">Ohio</st1:State></span></font></st1:place><font size=2 color=black
face=Verdana><span style='font-size:10.0pt;font-family:Verdana;color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:black'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<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'> John Formsma
[mailto:formsma@gmail.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, August 27, 2008
11:15 PM<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: more on floating
pitch</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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Mon, Aug 25, 2008 at 7:53 AM, Mike Spalding <<a
href="mailto:mike.spalding1@verizon.net">mike.spalding1@verizon.net</a>>
wrote:<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>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>This piano was tuned to A440 in March, and by August the A2 - A3 octave
was 13 cents wide. Are you saying that If I had floated the pitch at 439
in March, that octave would not have gone as wide?<br>
<font color="#888888"><span style='color:#888888'><br>
Mike</span></font><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
It depends on your humidity swing. But, yes, it probably would not be as
wide in August. If you are tuning right before a humidity increase, you
can tune the tenor section a bit flat, and the bass octaves slightly sharp (in
anticipation of the tenor going sharp).<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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Like I said before, to you and me as tuners, either way the octaves
would sound off. It just wouldn't be as bad if the tenor is not raised as
much, then further increases because of humidity. And you can't do this with
critical situations. But it works for homes, and should work fine for
schools. Better stability is the goal.<o:p></o:p></span></font></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=3 face="Times New Roman"><span style='font-size:
12.0pt'>I've observed this repeatedly with a church Yamaha C3 that experienced
huge changes with humidity. Before I "clued in", I would be doing a
pitch raise to A440 in late winter, and the piano would be 12 cents sharp by
early summer. And it sounded horrid! After I realized that the pitch
corrections were causing instability, I would leave the overall pitch just
under A440 (A440- 3 cents since their organ was at A440) in winter, and just
over in summer. It then stayed much closer to
A440 throughout the year.<br clear=all>
<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>The climate control in that church was horrible. Before I
installed a DC system, it got tuned 5-6 times a year. Now, it is tuned
2-3 times a year. The tenor was always incredibly out of tune with the
rest of the piano. With the DC, it still goes out, but not nearly as
much.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <br>
-- <br>
JF<o:p></o:p></span></font></p>
</div>
</div>
</div>
</body>
</html>