Isaac OLEG wrote: > > It is certainly possible with very fast cameras and analysis, to > determine what happen at different level of velocities, and I suspect > that there are different response mode within the top action, I don't > believe at the oversimplification that say that the pianist is only > allowed to control the velocity of the hammer. The contact moment is > shortened or lengthened depending of the attack angle when the hammer > hit the string, most probably. The moment of inertia of the shank is > allowing for some distortion is not it ? While you and I tend to agree more then we disagree here Issac, I suggest you read (if you have not already done so) relevant publications by Alexander Galembo. Also Anders Askenfelt has published some interesting stuff along these lines. As I said a couple days ago. Most of this, while not claiming any conclusive truths... point in the direction that Bill Ballard and others believe. though I think its important to underline that these Ph'D's dont claim << conclusive proof >> for good reason. And Alexander's work points off in another direction entirely me thinks... one that isolated accelerometer experimentation cant really address. Cheers RicB -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html
This PTG archive page provided courtesy of Moy Piano Service, LLC