Can the JUCE IIR Peaking Filter match the Logic Channel EQ?

I’m trying to match the sound and functionality of Logic’s Channel EQ…specifically the parametric peaking type, using JUCE’s IIRFilter, but it doesn’t seem like the Q matches. Is there some kind of conversion involved? How can I get it to match?


The Logic EQ is probably using a variable Q, and some algorithm to make the digital filter frequency response match the analog prototype one… Have a look for articles about Orfanidis, Massberg and MZTi peak filters for more information.