Hier ist was der Entwickler dazu schreibt:
"They are very small differences, but they exists. In general any analog or digital gear is not perfectly linear. They add distortions, very low or very high distortions.
You can sample the linear behaviour, not dynamic, with impulse responses, but you can't sample the dynamic behaviour or the harmonic distortions with impulse responses. The only mathematical way to do it is to use our technology (Vectorial Volterra Kernels Technology).
When you connect your cabinet and your microphone to your PC try to send in output a sine wave for example at 1Khz. You can generate it with Wavelab for example.
You will discover that the registered sine is composed not only by the 1Khz sine but also by sine wave at multiple of 1 Khz. So very attenuated sine wave at 2Khz, 3 Khz and more will appear. You have to use a very accurate frequency spectrum to see them.
These are harmonic [g=23]distortion[/g] kernels and the only way to sample them on the entire spectrum (1Hz->22000Hz) is with Nat."
Quelle:
http://www.ultimatemetal.com/forum/...a-thread-samples-tests-etc-4.html#post7970701