For tinnitus specifically, you could make simulator to play audio of what your tinnitus sounds like. The you adjust the volume/decibels until it matches the lev

For tinnitus specifically, you could make simulator to play audio of what your tinnitus sounds like. The you adjust the volume/decibels until it matches the level you are experiencing in your head. Now you can track actual measurements to see the relative loudness of your tinnitus over time. Just a thought.