@MarioMey said:

Maelstorm! I don't find eq7.mmb~-help.pd file! It is not in GitHub...
Also, a lot of "expr divide by zero detected" messages appear when I open gui.eq7.mmb~-help.pd.

I haven't made a helpfile for it. But, really, just look at the messages that come out of the middle outlet. Those are all the messages that work with [eq7.mmb~]. And don't sweat those "divide by zero" errors. Those just pop up when the [filtercoeff.mmb] astractions are initializing, but by the time it's done initializing they are taken care of.

As far as getting the mics to sound similar, that's mostly something you'll just have to do by ear, and you're not likely going to nail it. You could use the analyzer on [gui.eq7.mmb~] to help you. Try and run white noise through both mics, and adjust the EQ of one so the analysis looks as similar as you can get it. That might at least get you on the right track.

I told you about its help file, because, in gui.eq7 help file, it says "All other messages are the same as [eq7.mmb~]. See it's helpfile." But I had used the out messages to learn how to change its parameters.

To get one mic sounds similar to another... is "more or less". Last year, I did it with a by-me-made eq5, using lop~ and hip~. I wanted to know if that technique was "aberrating".

Another eq.mmb would eat my CPU. I'm already using two, for stereo-out.

EDIT: finally, I put EQ3 from Hardoff modified to have a band bypass (switch~) and general bypass. For the output, gui.eq7.mmb~ and eq7.mmb~ (both channels).