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Placement issues 5 years 7 months ago #31685

  • nwf477
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Not sure why but it seems every time I take a measurement using the mic I get a different sweep, its close but not the same. What puzzles me I use a tape measure to make sure the mic is in the exact center of the MLP and at ear height. Is it possible the mic is not calibrated properly or am I using the wrong cal file ( using the 90deg. file )? It just seems odd to me spend time to get the system adjusted then go back just to double check later and the sweep is off.

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Placement issues 5 years 7 months ago #31686

  • john.reekie
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At what frequencies is it different? If it's low, then it's most likely ambient noise.
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Last edit: by john.reekie. Reason: adverb!

Placement issues 5 years 6 months ago #31760

  • devteam
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@ nwf477

Hard to say indeed without more info. In low frequency, you have very long wavelength..
What software are you using for your sweeps? More info would help.. :-)

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Placement issues 4 years 11 months ago #34507

  • artsense
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noticed same thing..
even 1cm left or right from listening position giving different measurements results.
mostly on high frequencies
is it normal?

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Placement issues 4 years 11 months ago #34578

  • devteam
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@ artsense

High frequency = Short wavelength = little movement = change.
Low frequency = long wavelength = potentially some noise in sweep or incorrect sweep signal length or room modes.

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