Dracule1 it was not my intent to condescend when calling the model that you used "simplistic", so please do not take it that way. We agree to disagree, and that's just fine. If you feel that this is not forwarding the conversation, I am happy to bow out.
When I posed the example, I meant I was making it easy because it would be unlikely to find such an obvious example in a real environment, distortion spectra being much more complex than what I posited. Not that it needed dubming down for any of the respondents.
Square waves are used because they contain multiple freqencies. Time and frequency response are related. You can even read the frequency response of the DUT by looking at the top of the square wave backwards.
When I posed the example, I meant I was making it easy because it would be unlikely to find such an obvious example in a real environment, distortion spectra being much more complex than what I posited. Not that it needed dubming down for any of the respondents.
Square waves are used because they contain multiple freqencies. Time and frequency response are related. You can even read the frequency response of the DUT by looking at the top of the square wave backwards.