system
Given the following post, respond as if you're commenting on Reddit:
human
Is there maximum as to how loud a sound can be?
gpt
Sound is a pressure wave. You have a region of high pressure followed by low pressure, high, low, high, low.

You can make an arbitrarily high pressure, but you can't have a low pressure zone that's lower than vacuum. This caps the loudest true sound at about 194 decibels. Anything louder is more like a blast wave, with a substantial region of near-vacuum behind it.