Does anyone use a decibel meter for noise complaints in apartments?

Does anyone use a decibel meter for noise complaints in apartments? If so, do which one do you use, and what do you consider an acceptable level?

I’ve had people send in recordings of the “noise” so faint we had to go sit in our car with the volume all the way up to even “hear” what was supposedly there.
Noise complaints are the bane of our industry.
And I want to know why ppl are so afraid to just go politely knock and advise their neighbor they’re being loud; In the moment, not next day through a disinterested 3rd party which quickly become adversarial and he-said;she-said. That said. I’ve used decibel meters for an event space attached to apartments. The decibels didn’t matter so much as the bass. Which a car driving by or the subway matched regularly (without complaints)

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