system
Given the following post, respond as if you're commenting on Reddit:
human
Why is there ringing in your ears in complete silence?
gpt
there are little tiny "hairs" in your ear that are actually very sensitive cells that detect vibrations in the air that you brain interprets, thus, you  can hear things.

Sometimes, these little "hairs" get flattened out, by a very loud sound or by a natural quirk in your body. The ringing you hear is the the cells straightening themselves back out slowly. Imagine them like carpet that was under some furniture that you just moved. Your brain is wired to interpret any movement from them as sound, so you get that phantom sound at a low level as they stand back up.

Edit: Children of Men was an AWESOME movie, but the whole swan's song theory (that when you have ringing in your ears you will never hear that pitch again) is a common misconception.