Remember I'm supposed to be lettlng PE/Dayton handle the support and questions about this, rather than fumble around on the net behind their backs.... but I'll take a shot at some recent related questions since I've already set my foot in about the new rev. But please get with PE on these if you need more, they can coordinate things.
Penn, t6902wf: Not likely it will ever output coefficients or programming for other companyies' EQ boxes. But it does output easily readable FRD files (just plain old ASCII text of lists of Hz and dBs) that maybe some clever DIY person can write some software to crunch on. Use good sense though, don't let it try to EQ out of resonse suckouts.
There's no straight way to get a cal file out of OmniMic, it isn't really intended for use other than with its own software. The EQing done internally is done at several levels. No EQ is automatically applied to the mic's audio stream as it would be seen by another audio program. Though at low frequencies (for instance with REW to do bass EQ in a room) things should be pretty flat and well behaved, the big variations are up in the kHz.
Screen graphics resolution higher? This is technical software, you know, not Photoshop
You don't need to take screen shots to make a file of a single plot, use the "snapshot" icon to save to a file (in bmp or even in wmf files if you want something infinitely scalable). Or to save as ASCII FRD data, plain old "Save" file. (You don't save to the OmniMic directory, normally, just save to whatever folder is handy on your hard disk or thumb drive).
>Multple FRs? Overlaying capabilities, sumations (sum measurements, tweeter + woofer)? Group Delay, waterfalls, Phase issues? Distortion? EQing recommendations? Gating?
Yes on waterfalls (two kinds, done LIVE, I'm really surprised no one has commented on those here yet), phase, harmonic distortion (also live!), gating, RT60.
No on summing (for now), EQ recommendations beyond just the graphs, group delay (though you can add/subtract fixed delays).
Below 5Hz isn't very likely, sorry. That's getting down to where the capsules would be way hard to verify or calibrate. OM graphs go only down to 12Hz.
Math: currently functional (in new version that PE should have up in a few days): normalization (change in response from a reference), filtering (apply a response to a response), evaluation if a curve lies between two others. And the ability to offset individual curves that are being displayed from files.
Thanks for the attention! (and sorry, Karl, if I'm interfering)