Wayne Parham Messages: 18835 Registered: January 2001
Illuminati (33rd Degree)
I wonder if it's the untrasonics or possibly the waveshape or distortion. In a way, these are all ways of saying the same thing because harmonics would be shifted up out of the (traditionally recognized 20-20kHz) passband and waveshape modifiers can be expressed as (Fourier series) harmonics.
On the other hand, it could be that the real issue is something like non-linearity, where it may be that the audible thing isn't so much the high frequency harmonics as it is the non-linearity itself - the harmonics are just one way of seeing the non-linearity, a side effect, if you will.