The Ohio Supreme Court says most people can figure it out.
Not Jason Carrick, however. The Wayne County man got arrested when authorities made a third trip to his Halloween party over noise complaints from neighbors.
Carrick argued that the law is unconstitutionally vague. In other words, it doesn't specify how loud is loud enough to get you in trouble.
He lost that appeal, but the ruling conflicted with one from another appeals court. That's why the Ohio Supreme Court took it up and has now ruled that a person of ordinary intelligence would know.
No word yet on whether someone will challenge the specific definition of "ordinary intelligence."