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<DIV><STRONG><FONT face=Arial>All this time, I was thinking that the bass change
was less, because those strings were on the bass bridge.</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=Arial>The bass bridge, being at the edge of the
soundboard, didn't change as much with the addition/subtraction of moisture, as
the other bridge closer to the centre.</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=Arial>I guess I was
oversimplifying.</FONT></STRONG></DIV>
<DIV><STRONG><FONT face=Arial>Too bad, I was satisfied all these years, and
explained it to my customers, that way.</FONT></STRONG></DIV>
<DIV>John M. Ross<BR>Windsor, Nova Scotia, Canada<BR><A
href="mailto:jrpiano@win.eastlink.ca">jrpiano@win.eastlink.ca</A></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=david@davidandersenpianos.com
href="mailto:david@davidandersenpianos.com">David Andersen</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">Pianotech List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, March 10, 2007 11:23
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Seasonal pitch change:</DIV>
<DIV><BR></DIV>Brilliant, simple, makes sense, and completely expands and
clarifies my understanding. Great job, David. Wish we'd had much more
time to hang out in San Fran. You are a crucial resource, dude. Thanks.
<DIV>David A.<BR>
<DIV>
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<DIV><BR class=khtml-block-placeholder></DIV>
<DIV><BR class=khtml-block-placeholder></DIV>
<DIV>On Mar 10, 2007, at 6:40 AM, David Love wrote:</DIV>
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<P style="MARGIN: 0px"><FONT style="FONT: 16px Helvetica" face=Helvetica
size=5>The lower the tension in a given string the greater the change in
pitch for</FONT></P>
<P style="MARGIN: 0px"><FONT style="FONT: 16px Helvetica" face=Helvetica
size=5>a given change in length.<SPAN class=Apple-converted-space>
</SPAN>Since the lowest tension tends to be in the low</FONT></P>
<P style="MARGIN: 0px"><FONT style="FONT: 16px Helvetica" face=Helvetica
size=5>tenor, that is where the largest change in pitch generally is.<SPAN
class=Apple-converted-space> </SPAN>The bass</FONT></P>
<P style="MARGIN: 0px"><FONT style="FONT: 16px Helvetica" face=Helvetica
size=5>section is usually the highest string tension and therefore changes
the</FONT></P>
<P style="MARGIN: 0px"><FONT style="FONT: 16px Helvetica" face=Helvetica
size=5>least.<SPAN class=Apple-converted-space> </SPAN>On many pianos
the scale tensions also drop in the upper treble.</FONT></P>
<P style="MARGIN: 0px"><FONT style="FONT: 16px Helvetica" face=Helvetica
size=5>Scales that are designed with more equal tension through the piano
will tend</FONT></P>
<P style="MARGIN: 0px"><FONT style="FONT: 16px Helvetica" face=Helvetica
size=5>to go out of tune more evenly. <SPAN
class=Apple-converted-space> </SPAN></FONT></P>
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