Del wrote: > > Uh, he must have built up a piano, listened to what happened, made some changes, > listened to what happened, made some more changes, etc. Apparently without any > understanding at all of even the basic principles of mechanical impedance since > it's too complex a subject to be of any value to the piano builder and/or > designer. > Del, Please don't get your shorts in a knot. I don't think I said that understanding the principles of mechanical impedance and applying them was too complex a subject for a piano builder or designer. Carpenters do it every day. The point I was trying to make is that the actual numerical analysis is extremely complex when done on a purely theoretical basis. On the other hand, building a physical model (a piano), testing it, applying the basic principles (impedance function of inertia and springiness) to modify the model, is a workable and practical approach. Is this the approach you employed? Frank Weston
This PTG archive page provided courtesy of Moy Piano Service, LLC