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<DIV><FONT face=Arial>An excellent set of references would be all articles
written by Del Fandrich and published in various issues of the Journal of the
Piano Technicians Guild. I don't have a list of which articles are in what
issues - perhaps someone else on the list does. You can purchase a set
of CDs from the PTG with all the back issues of the Journal.</FONT></DIV>
<DIV><A
href="https://www.ptg.org/store/product_info.php?products_id=44&osCsid=27e59c5bd1f08417e1f0b3972e82e847"><FONT
face=Arial>https://www.ptg.org/store/product_info.php?products_id=44&osCsid=27e59c5bd1f08417e1f0b3972e82e847</FONT></A></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Another reference might be "Piano Tone Building" by Del
Fandrich - also available from the PTG.</FONT></DIV>
<DIV><A
href="https://www.ptg.org/store/product_info.php?products_id=135&osCsid=27e59c5bd1f08417e1f0b3972e82e847"><FONT
face=Arial>https://www.ptg.org/store/product_info.php?products_id=135&osCsid=27e59c5bd1f08417e1f0b3972e82e847</FONT></A></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Terry Farrell</FONT></DIV>
<DIV><FONT face=Arial>Farrell Piano</FONT></DIV>
<DIV><A href="http://www.farrellpiano.com"><FONT
face=Arial>www.farrellpiano.com</FONT></A></DIV>
<DIV><A href="mailto:terry@farrellpiano.com"><FONT
face=Arial>terry@farrellpiano.com</FONT></A></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>----- Original Message ----- </FONT>
<DIV><FONT face=Arial size=2>From: <</FONT><A
href="mailto:jrcbaker@comcast.net"><FONT face=Arial
size=2>jrcbaker@comcast.net</FONT></A><FONT face=Arial size=2>></FONT></DIV>
<DIV><FONT face=Arial size=2>To: <</FONT><A
href="mailto:pianotech@ptg.org"><FONT face=Arial
size=2>pianotech@ptg.org</FONT></A><FONT face=Arial size=2>>; <</FONT><A
href="mailto:pianotech@ptg.org"><FONT face=Arial
size=2>pianotech@ptg.org</FONT></A><FONT face=Arial size=2>></FONT></DIV>
<DIV><FONT face=Arial size=2>Sent: Monday, July 02, 2007 11:24 PM</FONT></DIV>
<DIV><FONT face=Arial size=2>Subject: soundboards, gongs, drum heads and speaker
cones</FONT></DIV></DIV>
<DIV><FONT face=Arial><BR><FONT size=2></FONT></FONT></DIV><FONT face=Arial
size=2>> Where can I learn more about how the soundboard handles vibration? I
see that a soundboard curves upward and that strings might be exerting a
downward force. So the event of a hammer hitting strings produces a vibration
that is carried to the soundboard that amplifies the sound we hear.<BR>>
<BR>> What I am asking for are relevant references to the physics of how the
soundboard handles vibration. So far I have reviewed a seminar given several
years ago at the Swedish Royal Institute of Technology.
<BR>> <BR>> I am particularly interested in speculating that the
function of a soundboard is similar to that of a gong being struck directly by a
hammer. <BR>> <BR>> Thank you in advance for your time.<BR>> <BR>>
<BR>> My highest regards,<BR>> Jim<BR>></FONT></BODY></HTML>