Jonathan Finger wrote: > I certainly agree with the psychoacoustics theory that somewhere in the > brain, sound and touch coincide. I see this demonstrated frequently > when after voicing down a piano, a customer thinks that the action feels > heavier. Conversely, a brighter piano feels seemingly lighter. > I think most every one aggrees. > > However, I don't know what I think about a performer being able to feel > harder hammers vs. softer hammers. As I said, I certainly think > voicing affects touch, or at least seems to. But after escapement, the > fingertip is no longer in contact with the hammer right? Wrong. The only thing that is decoupled at this moment is the jack / knuckle. The the repetition arm is in contact with the drop screw, and thereby a direct line to the hammers impact is established. And there are indirect lines. Probably the actual physical signal sent down the key is quite small, but measureable. > At this point > the hammer's flying under it's own momentum, and you have no control > over it right? If this is so (please correct me if I'm missing > something obvious), how can the density of the hammer be felt through > the key? Until the hammer checks, it isn't in direct contact again. See above, but the other thing is that the shock of imact reverberates through the shank for a few milleseconds, where as the moment of jack/knuckle seperation is on the order of 1 ms. Perfectly feasable that some of this impact signal will get sent back through the key both at catch (through the backcheck). > > Please correct me if I'm missing something obvious here. Just trying to > work through this in my head. > > It sounds strangely like the > vibrato-via-massaging-key-at-bottom-of-stroke technique. :) > > Jonathan Finger RPT > > - -- 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