12dB lowcut?
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I would like to build a 12dB/octave lowcut, as neutral as possible.
The 1 Pole HP looks neutral, but it is only 6dB/octave and stacking 2 of these filters will not exactly be the same as 1x 12dB/octave filter.
I read here on the forum that the SVF filter is 12dB/octave (is it?), but I'm afraid it will alter the sound (will it?). What Q setting would be as neutral as possible? From the curve in the GUI I would say 0.8? EDIT: ChatGPT says resonance is "neutral" at 0.707.
And what about the lowcut in the parametric EQ? How steep is it?
Any other ideas? -
Stacking two 1-pole (6 dB/oct) high-pass filters is definitely an option, but it doesn’t behave exactly like a single 12 dB/oct design. The slope doubles, but the overall response (phase and the cutoff alignment) will be slightly different.
The SVF can do a true 12 dB/oct response that's mathematically “neutral”.
If you need more control over the resonance, a Sallen–Key filter is another solid choice for a 2-pole high-pass filter.
