When recording your music do not make dangerous assumptions that will destroy your sound. If you are tired, go home; do not force yourself to make a bad recording just to get it done. Patience is a virtue as an artist; don’t rush into it. Do not presume someone will fix up your bad recording; fix it yourself! Check and double check the placement of your microphone and make sure your cables are in excellent condition because they can ruin your sound in subtle ways.
Worth your attention:
3 Dangerous Assumptions In The Studio
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I’m seeking info for sanctuary reverberation absorbsion material ( panels) and best placement.
There may be apps that do that. You can definitely find spectrum analyzers that will measure ultra low.
Is there an APP that can measure the ultra low frequency levels?