LOL! Done. Well, they are calling the non-zero delay filters "linear phase". Linear phase does not skewer or smear the phase. In fact, in the video they kind of mumble jumbled about how linear phase does not fuck up the phase (kind of over-complicated-ly). If the simple/low taps/whatever EQ filter is not linear phase, then why call it linear phase in the video? It is not. Specially when you are making a case about the benefits of minimum phase vs linear phase. To me this is too misleading to ignore. They go overboard to talk about how the pre-ringing creates some sort of reverb. That's AFAIK complete BS that I double checked in that Octave/Matlab script there. If the case is about subjective evaluation, I checked the processed files. I don't hear that reverb. The EQ program might not be a total failure. But if the linear phase settings are generating reverb artifacts, maybe they need to revisit the implementation. Maybe I'll do a few linear and min phase notches to compare. But bare in mind that notches may indeed generate reverb like sound (in either type of filter). That's is not because of the linear/minimum phase deal, that's due to the notch itself. It's coloring the signal. Furthermore, note that their comments extend to low pass and high pass filters. A low pass is what I did. I can lower the pass band to half the bandwidth (10 kHz) and see what you guys think too. Could do a high pass as well. Let me know what you guys want to check. I don't have a horse in the race BTW.