The ringing just won't subside. That high pitched ringing in your ear has been irritating you since yesterday morning and it still hasn't disappeared. you realize that the ringing is tinnitus but your starting to worry about how long it will continue.
Yes, it will ultimately subside on its own. A rock concert is an excellent illustration: you go see Bruce Springsteen at your local stadium (it's a good show) and when you go home, you notice that there is ringing in your ears.