I just found another mic capsule on an Arduino MAX9814 board. Took that off to try again.
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Without calibrated, much better audio! Adjusted mic gain and compression. I set the noise gate to 30 and everything else as default. Still not perfect but very much improved and very usable!
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Ran the calibration through and left every thing else as it was and the audio is very rough.
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I'm going to factory reset it again and dial in the setting I was happy with and leave it at that, unless anyone has any suggestions to improve calibration results to improve the audio.
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Note that there is a lot of merit in what Hans says. Not every electret mic are the same. This last one that I found on an Arduino board seems to work nicely.
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Cheers,
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Mel. M0KMD
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