When this is
said, it refers to lots of voices playing in your head at once. You want them to stop
talking as they’re annoying you or simply won’
t shut up. Sometimes it can be used to express feelings, if you have a massive crush on someone you’d say the phrase.
Guy: I kind of like you
Girl: *takes a screenshot and sends to a friend* The volume in here is astronomical
OR
Guy: Wait what i thought you
said-
Girl: The volume in here is astronomical