I think if you do I search on ROON and/or CA you will find explanations of how to proceed. I bought a simple $75 mic and downloaded the free REW software and after a bit of effort was able to do it. Once, I had the hang of it it took 15-20 min max. I found the following text on the CA forum:
As an introduction to REW software, there is a good and simple tutorial available here https://www.minidsp.com/applications/acoustic-measurements/umik-1-setup-with-rew
Once you have set the level (by using left loudspeaker for instance) you’ll have to keep it for all the different sweep measurements.
From a practical point of view I suggest to follow this procedure:
- set the microphone at the sweet spot position
- set the level using the left loudpseaker
- perform the sweep measurement for this position & left loudspeaker and rename it L1
- perform measurement for this position but right loudspeaker this time, rename it R1
- move microphone to the next position & perform the measurements for right then left loudspeaker, name it R2 & L2
- repeat the procedure for the others different positions (I recommend sweet spot + 4 others as a minimum)
- save the bundle of measurements as a .mdat fil
Mind you, it sounds easier then it is if you have never done it. But, if I can figure it out you can too. There are also lots of much smarter folks then me who have tried to describe how to do it on the different forums.