[natdempk]

Ah okay, I'm surprised there isn't something more precise and scientific out there. Interesting to know that the theoretical gold standard I would really want might not even exist.

Edit: I stand corrected, as the poster below mention (I can't reply), I'd want an audiogram from a professional. Thanks!

[mh-]

You want an Audiogram from a professional. There are definitely medical facilities that can do this to a sufficient degree of accuracy.

https://en.wikipedia.org/wiki/Audiogram