William Monroe wrote: > Hi Wim, > > This may be the way we've been explaining it for eons, but this theory > is certainly in question. Read Ron N.'s article in the April 2006 > Journal which speaks directly to this. More, I believe it was Ric > Brekne who wrote an article some time back which addressed the concept > of pitch change due to soundboard crown increasing. When he isolated > the one variable of rise and fall of the soundboard, it was pretty > quickly apparent that the amount of soundboard rise required to affect a > significant pitch change was absurdly large. The math just doesn't > support the theory that soundboard rise and fall is responsible for > major pitch changes. It is involved to be sure, but is likely not even > the major factor. Lot's to chew on, and I apologize in advance if I've > referenced the wrong author. > > William R. Monroe The first mention of soundboard rise and fall not accounting for observed pitch changes I recall was in a Journal article by Darrell Fandrich in the July 1996 issue. It was probably observed many years and many times prior to that, and widely ignored. Ron N
This PTG archive page provided courtesy of Moy Piano Service, LLC