Cy The Wapin System will be covered in several classes at the Central West Regional Seminar held here in Rochester MN, USA, April 12-14, 2002. Hands on events will be conducted. If you don't receive a mailing, contact me. (Please excuse my unvarnished plug.) Paul Chick Coordinating Chairman 17950 75th Street NE Plainview MN USA 55964 ----- Original Message ----- From: "Cy Shuster" <charter1400@charter.net> To: <pianotech@ptg.org> Sent: Friday, January 25, 2002 2:06 AM Subject: Re: Wapin bridge > The sense that I got out of that was that a more rigid termination point on > the bridge allows more energy to stay in the strings, increasing sustain. > This would imply that some "energy" (in some form) passes through the > strings to the bridge. I was wondering if the "before" and "after" graphs > of actual measurements would be useful to this discussion. Do both theories > predict the observed results? (Or do we need a better experiment?) > > I also thought it was interesting how they described "mechanical energy" > being converted to "acoustical energy" at the bridge. Are these terms > well-known? I don't want to muddy the semantic waters. > > --Cy Shuster-- > Rochester, MN > > ----- Original Message ----- > From: "Roy Peters" <roy.peters@mindspring.com> > To: <pianotech@ptg.org> > Sent: January 24, 2002 9:49 PM > Subject: Re: Sound waves(The behavior of soundboards) > > > > Cy: > > You were right. My liner notes agree with your liner notes. My hangup > was on > > the use of the word "resistor". It's a different way of thinking about > it. > > > > Roy > > >
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