> > Starting with a false presumption that a thump tone pitch is indicative of > > tone potential in a strung piano (using the largely invalid comparison of a > > violin to a piano (as usual) to make the presumption), > >Hey, Ron. Would you please explain why you feel or think this is a false >assumption? I've been thumpin' on the underside of boards with the damper >pedal depressed for 20 years, and I can definitely pick up a lot of info >about the condition of the board from listening: loose ribs, loose edges, >lack of resonance (i.e. crown and bearing), the general "voice" of the >board/piano. > >Is it another one 'a them psycho-acoustic illusions? > >Best, David A. No, it's no illusion, it's just thumping on the board with the damper pedal down. Sure you can tell if the board is falling apart, and find major performance problems that way but you can tell that by just playing it too. What the photo showed, and what I was talking about was the assumption that you could grade the final tone quality of a piano by thumping on an un-strung board and checking it's pitch. Again, you can tell if the thing is falling apart by the rattles and clanks produced, which should be pretty obvious anyway, but the pitch of the thump is utterly non-informative. Ron N
This PTG archive page provided courtesy of Moy Piano Service, LLC