Yea, I did think that it wouldn't work very well, but wanted to try it anyway
The pitch doesnt need to change all that much, just enough to be noticeable...
But you're right, it doesn't sound right... the sound in reality is changing because the position of the head relative to the spiral gear (not sure what it's called, the design of this bit changes alot from drive to drive :}) is changing (coming closer to your ear, when you've got your head close to the drive to hear it
) and parts of the drive react to the force of the motor moving the heads differently depending on the positions of the various parts
I don't think we want to get into acoustical modelling to get the sound "just" right :eek imagine how much that would slow the emulation down