system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does having noise in the background (TV, music, etc.) make me feel safer when I'm home alone?
gpt
Your ears are sensitive through a wide ride of volumes.  When it is very quiet, you hear faint noises you are unaccustomed to, which can be disconcerting.  Background noise hides those sounds with ones more familiar to you, restoring your comfort level.