Doug Richards wrote: > Frank, > Exactly my point! Here I thought I was going to show how much I didn't > know. In mechanical optimization of disk drives, we like to talk about > things we can measure and then change. If you can't measure it, all the > beautiful words describing the concept are just that. Why not switch gears > and talk of things you can measure and then optimize? I'm a finite element > modeler so I do lots of computer simulations to show trends, but I always > have to talk in terms that the lab guy can go out and test the structure > and corroborate my predictions. He measures mechanical properties like > displacement, velocity and acceleration and can display them in terms of > real/imaginary or magnitude/phase as a transfer function. These are the > tools we use to measure and describe vibrating mode shapes, resonant > frequencies, internal damping, transient shock response and so on. > > So back to pianos... > > What DID Del do to kill the Killer octave (without bringing up impedance)? > > doug --------------------------------------------------------- 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
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