Recent content by AustinJerry

Thanks for your suggestion, but for now I'm just trying to understand the polarity difference. While my equipment and environment have remained relatively stable since the "old post" and today's measurements, there could always be some variables, like slight differences in mic placements, or...

If you had a choice of which mic to use, which would you pick? Or does it really make a difference?

OK, I ran a fresh set of measurements using both the UMIK-1 and UMIK-2 and switched between using the Java Excel driver and the ASIO driver (MDAT attached). All of the UMIK-2 measurements using both drivers are showing negative polarity, while all of the UMIK-1 measurements are showing positive...

No, the ASIO4All driver was used. The 7/5 measurement used the Excel drivers. Do you think the driver selection would make a difference? Did you look at the MDAT file? Something peculiar is going on with the Dirac Off/On measurements.

MiniDSP has responded and they are looking into this issue. I ran a quick analysis to try and identify when the issue first appeared. The analysis results are in the attached file. The issue first started appearing for me in July of this year. I am also attaching a REW MDAT file that...

I opened a ticket with MiniDSP in early July but never received a response. I opened a second ticket this week, reminding MiniDSP of the many years that I supported their products by developing guides that they have published on their web site. I reminded them that I expect an answer this...

No. Are you suggesting REW may have an issue? Again, if it were an REW issue, it would likely affect each mic the same. I really have no other way of measuring anyway. My theory is that there is something different with the two mics. I just haven't isolated what the difference might be...

Thank you for the suggestion. Here are the areas where a setting might result in an inverted result: As you can see, neither setting has been selected. Is there another setting that you think I might have missed? Regardless, wouldn't such a setting apply to both mics, not just one?

Well, I took another pass at trying to resolve the polarity anomaly between the UMIK-1 and UMIK-2 in my setup. I made sure that I was using the latest REW version for the measurements. Still the same result. I measured all seven speakers in my 7.1 configuration, and all are showing the...

I have 63 folders containing unique REW measurements after fresh Dirac calibrations. Some use the UMIK-1 and some use the UMIK-2. It is tedious to search each of these folders to see if there is a point where the polarity anomaly first appeared. And I don't know what this would prove anyway.

Well, I have an MDAT with measurements using both mics, and it shows the polarity issue. I can't see anything in the info file that would suggest why this is happening. I was hoping that JohnM would shed some light on the issue.

Here are two impulses from prior measurements that don't show the polarity anomaly. The REW version used to take the measurements are likely different, if that might cause a difference.

Interesting, thanks for reminding me again. I wonder why I am getting different results. I tried different USB cables, but that didn't make any difference.

I never heard back fro MiniDSP. The reason I re-posted this issue is that this time my test was extremely simple. Swapping the two mics keeping everything else the same should IMO result in the same polarity mesured by the impulse response. I am hoping that someone else who has both mics will...

I simply unplugged one mic and connected the other. Both were using Excl with identical settings.