Recent content by torarnv

Some good news at last (sort of)! I booted my iMac Pro into Windows via Bootcamp, and there UMIK-1 + MOTU works as expected, producing around -26ppm for every single measurement. I guess I'm doing my measurements in Windows then :) I have no idea why things don't work as they should on the...

Tried locking the clock of the MOTU to the UMIK, no change:

Thanks for your help John!! I've experimented with various combinations of inputs and outputs the past days, resulting in Output / Input UMIK-1 MOTU Audio Express Mic in iMac Pro Microphone MOTU Audio Express Clock adjustments ranging from -26 to -190, eventually resulting in "clock...

Here's a video showing what's happening:

Buffer size 32, 10 repeated measurements, at end of number 4, this popups up: Both the start and end acoustic reference was played, and seem to show on the input graph. Also did 10 repeated measures at 512k, which succeeded. Attached. One thing I notice while the measures are being done is...

Yeah, 32k was the default, was just trying if 512k did somehow fix the audio reference issue above. Do you want mdat with the ones from 512k? Or the ones that are saved once the "clock adjustment unusually high" error happens?

Another attempt of 10 successive measurements finally worked, buffer size 512. I guess I was lucky this time :) The clock adjustment of these are around -26ppm for a handful, and -170 to -190ppm for the rest.

Tried increasing the buffer size on both UMIK and MOTU to 512. I now get a few more measurements in (tried 10, got 5), before seeing:

I tried doing single measurements now, and two of those 3 worked, but the last one gave the same "clock adjustment unusually high" message, so it doesn't seem to be related to the multiple-measure-feature.

What happens is that the two first measurements are okey, then after the third one, REW looks like this: Dismissing the modal dialog I'm left with all 3 measurments, but I don't know if they are correct or not: It seems to also put REW in a weird state when this happens sometimes, where I...

Ah, so the important thing about the reference sound is that it's from a stable speaker position, so that you can then e.g. move the tested speaker around the room? If so, I could in theory use the same speaker for the reference signal as I use for the test sweep, as the speaker is always in the...

Should I be using the non-beta version of REW for this in case something changed in the development version?

Including my UMIK-1 in the aggregate device, so that they would all share the same clock: But attaching the cal file to the new aggregate input in REW seems to not work fully: Don't know if that matters if I calibrate the SPL? In any case, still getting this:

I tried playing the reference sound via my iMac Pro's built in speaker (creating an aggregate device in macOS of my built in speakers and my MOTU AudioExpress), and sometimes it seems to work, but other times I get: Is it okey to play the reference sound from the right speaker while measuring...

Aaah, I naively set it to 1M based on some guide that said higher is better :D I'll reduce the sweep and play around with the timing reference, thanks!