system
Given the following post, respond as if you're commenting on Reddit:
human
ELIF: Why do things sound “deafeningly quiet” after a loud noise stops?

I’ve noticed that right after something like a vacuum or some other loud machine stops, the remaining silence seems quieter than usual & in a way so quiet it’s loud. I’m wondering if there’s a name for this and how/why it occurs.
gpt
You brain dynamically adjust for the volume of sounds.  So long as you can hear the sound well and it isn't overpowering, it will registers about the same, unless you are specifically paying attention.  Your brain will also adjust to loud background noise, to the point where it doesn't really register anymore.

That means where your brain has adjusted to load noises, quiet noises seem extra quiet.  The opposite is true as well.  If you are trying to keep quiet and someone starts talking in a normal voice, it will sound overpoweringly loud.