This is the same quote that I was asking about earlier in this very thread.
I could just be dense (likely), but that does not help.
To me the key phrase there is "single channel measurement system".
We all must be talking past each other, as I am referring to using REW+UMIK-1 (or any mic) as a
two-channel measurement system.
The second channel serves as the timing reference. See pic attached.
I understand why accurate timing/phase measurements can be important.
I am asking why, or where is some evidence, that using REW with a UMIK-1 is incapable of meeting such requirements.
For instance,
this post from miniDSP implies no such problem making timing measurements.
Offline analysis?
What about the case of making a WAV file of REW's test signal(s), using that test signal to probe some speakers by recording their responses independent from REW, then using REW offline at a later date on those recorded responses?
If one has a timing reference embedded in the probe signal and encoded on the measurement signal, I don't see that even this case is a problem with its arbitrary delay between probe and measurement.