The settings are just numbers they're feeding into the DSP. They don't really have any way of knowing for sure exactly how much the "Q" values are changing the EQ curve.

Hm, one (especially one without experience with DSPs :) would expect that algorithms implemented in the box are documented enough to reconstruct roughly their effect. That reminds me of job I once did, that of predicting, say, X-ray fluorescent spectra from known target composition, detector resolution and some previously measured cross-sections and shell energies. Boils down to superimposing a handfull of Gaussians. Is this what we are actually doing with parametric EQ, superimposing Gaussians with known amplitude, centroid frequency and width (or just amplitude with other parameters fixed in the case of non-parametric EQ), or is it more complicated?

Cheers!

Dragi "Bonzi" Raos
Zagreb, Croatia
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