I first noticed tinnitus in my early twenties and wrote it off as benign like eyeball floaters. It got louder and pulsed with my heart when I jogged, again, no big deal. When I had vertigo, ENT told me I had hearing loss, I didn't really care, it was the vertigo causing me big problems. I did notice one day when I used my cell phone, I couldn't hear in one ear like the other. No big deal, use the other ear and/or use speaker phone always.
Guess I'm now learning the correlation between hearing loss and tinnitus but still uncertain of a direct and proportional relationship.
Also, I can hear above 4k just need higher volume. I don't quite understand frequency, volume, tones of treble and bass. Easy stuff but at this point learning about acoustics doesn't help directly with my tinnitus issues as much as other subjects related to the psychology of coping.
But I'm now learning more here. Still I think some people have zero hearing and no tinnitus like Rush Limbaugh possibly and others?