This is my pattern:
Morning: Very low static-TV-ish sound in right ear.
After shower: Changed into a buzzing sound.
10 minutes after shower: Back to static-TV-ish sound.
Sometimes out of the blue: Total new sound, always a pure tune. Goes away slowly, then back to static-TV-ish or buzzing.
If I'm crumpling a plastic/paper bag. It instantly goes up in loudness in buzzing-ish way. Sometimes very loud. But when I stop it goes down again.
Other times, it goes super high pitch in both ears. I have not found any pattern in the super high pitch ringing. Seems random when it happen, but don't last long.
If I'm just chilling, take it easy in front of my computer, playing poker or something. it sometimes goes away. Or at least so low that I can't hear it because of the laptop fan. Those moments are pure bliss. Therefor, I have been playing a lot of poker lately.
While listening to ocean, nature, forest and birds in my headphones. xD