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Ooooh... Charts and Graphs Redux


Fractal Fanatic
Here's another graph showing the gain matching. I reduced the frequency of the input sweep. As you can see the odd harmonics are aligned but there are more even harmonics and much more aliasing with "Product B" (green trace).

View attachment 89015
Now it's definitely clearer.
I wonder if that other product was running an amp model or a "capture" and if there's difference between the two in the amount of aliasing


I'm surprised as I assumed the whole industry had pretty well conquered aliasing/fizz issues some time ago - guess not.


Since the Helix firmware 3.0 the fizz is less, but still noticeable/tiring. So I assume it would look similar to the blue graph.


Fractal Fanatic
So would an over abundance of even ordered harmonics, say over the modeled amplifier, create a more desirable “tone” for some people?

Is it done on purpose to elicit a musical tonal characteristic that people are attracted to?

Chris Hurley

Looks almost like a speaker impedance curve effect emulation based on a hump around 100hz and a steady rise from 1k up...
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