Today I started creating some IRs and found a few interesting things.
Few of the things I didn't know you can do with the software, besides the obvious exporting/importing the IRs, firmware updates etc...
Wile capturing the sound of the guitar, I connected the pedal to the laptop and had the software opened. After creating the IR profile, you can look at the DB levels and if needed turn it up or down and save it. I compared the signal with some of the built in IRs that I thought had good levels and set my levels in the same neighborhood.
I also found how you can label the user presets which I found people asking about in comments on YT videos and isn't really detailed anywhere.
Once the IR is created, you can look at the graph and besides listening to your sound, you can see how even the frequency response is, which is really great. And it can vary a lot. Even is good. All over the place, not so much. The sound I like so far the best, not surprisingly, has the most even frequency curve.
I tried pointing the mic towards the tailpiece and at the neck around 10th fret, around 6" away. In each case I did the following;
When playing as chord, the frequency response was very uneven. Much better with one string at a time. The even curve that was a little bumped was mic pointed at the tailpiece, strings picked one at a time.
To me starting with playing the open strings makes the most sense because that should be sort of a zero point as far the sound of the instrument. I think that's the best way to feed the pedal the information it's looking for.
But I'll compare, chord progression with la pompe and single strings. I'll test how even picking might affect the IR. Or better how uneven picking might screw it up.
I'll see what pointing the mic to the soundhole might do but I don't expect good results with that. So far towards the tailpiece is better than towards the neck. Even though I prefer the neck sound slightly for playing rhythm, it's warmer, which again isn't surprising. Everything makes a difference. Even having the sound port on my guitar covered vs open, gives a different IR sound. Covered is better so far.
I'll find out what I get with a dynamic mic vs condenser which I was using so far.
With all of this, the graph you can see as a result is essential and such a great tool. I believe if I continue going systematically through it and compare the graphs of results, I'll end up with a good sound.
I'll post pics with graphs tonight.