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TOPIC: Is phase information necessary for UMIK-1?

Is phase information necessary for UMIK-1? 4 years 1 month ago #26434

  • Allister
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I'm new to sound testing, and have been using the OmniMic system, whos calibratin file includes what appears to be somewhat linear phase information, as found when the information was imported into SoundEasy. (Image 1)

When I imported the UMIK-1 calibration file, I observed what I would consider erratic behaviours in the phase response - which I found most interesting for the lack of a 3rd column within the configuration file! (Image 2) Very confusing. And the information doesn't appear when I uncheck the "include 3rd column" option on the import)

This, of course, made it seemingly pointless to perform SoundEasy's Hilbert-Bodi transform function on the Umik-1.

My perception, as a non-expert, is that phase information would be necessary. Is this the case? And, if required, how would one go about obtaining proper phase information?

Thank you.
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Is phase information necessary for UMIK-1? 4 years 1 month ago #26435

  • john.reekie
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Why are you doing a Hilbert-Bode transform on the calibration file?
I am not miniDSP support.

"You must ask the right questions." - Dr. Alfred Lanning's hologram.
-> Have you read the User Manual??
-> Have you drawn and posted a diagram?
-> Have you posted a screenshot?
-> Have you posted your config file?
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Is phase information necessary for UMIK-1? 4 years 1 month ago #26436

  • Allister
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As a newb, just following along with some instructions found here: chadgray.info/soundeasy/. Not sure if totally necessary - but giving me knowledge for doing the HB when it comes to speakers, none-the-less.

I can see how it wouldn't be necessary - though it is interesting that both microphones peel off at about 19100Hz as far ability to receive signal.
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Is phase information necessary for UMIK-1? 4 years 1 month ago #26438

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The UMIK-1 file doesn't have a third column, so you would need to uncheck the third column when importing. I guess you could synthesize the phase data, there just isn't a phase "reference" to compare it to.
I am not miniDSP support.

"You must ask the right questions." - Dr. Alfred Lanning's hologram.
-> Have you read the User Manual??
-> Have you drawn and posted a diagram?
-> Have you posted a screenshot?
-> Have you posted your config file?
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Is phase information necessary for UMIK-1? 4 years 1 month ago #26452

  • Allister
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Thanks for you input. I appreciate it :)
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