Because the measurements are different lengths, the IR delay is different for each measurement. I suggest aligning the impulse responses. On the Impulse tab click on Controls->Estimate IR Delay->Shift IR for each measurement before viewing in Overlays.
Can you pls show overlayed phase responses in 5.20 Beta 13?
Also indicative of clock mismatch.The slope down at the higher frequencies is something new in newer versions.
Have you tried measure them from a smaller distance, say 0.5m?
Phase wraps like that occur where there are nulls in the response from reflections, they show deviations from minimum phase behaviour. They can be a bit variable from measurement to measurement depending on whether the null is deep enough.
Do you have different devices for input and output? Looks like the sample rates are a little different to each other.
Also indicative of clock mismatch.
I never listen from 0.5m, nor am I building speakers, and panels are a bit strange close up, so, no.
All my measures, unless noted otherwise, are from the listening position, at about 10 feet.
No, that's not correct. I've seen a couple of examples where the clock appears to be slightly offset from 48 kHz, but all the UMIK samples I have tested (5 to date) have not shown any offset and have identical impulse responses at all sweep lengths.So you can't get an accurate impulse response with the UMIK-1 and a long sweep because of clock drift?
No, that's not correct. I've seen a couple of examples where the clock appears to be slightly offset from 48 kHz, but all the UMIK samples I have tested (5 to date) have not shown any offset and have identical impulse responses at all sweep lengths.
No, that's not correct. I've seen a couple of examples where the clock appears to be slightly offset from 48 kHz, but all the UMIK samples I have tested (5 to date) have not shown any offset and have identical impulse responses at all sweep lengths.
Even for panels? I know a .5m panel measurement will give innaccurate FR--is phase immune to that issue? And .5m seems like it would create issues in many box speakers too, at least at crossover points.Near field loudspeaker measurement is a very common thing when measuring speakers in a room. You can't measure phase correctly in a room from that distance because of reflections. Give it a try and you will see the difference.