And yes, the decibel level has to be the defining metric.
But it was really sad, when the church bells were outlawed. Some part of our world died, that day.
I remember a bunch of commie-libs trying to silence the (real) bells of St. Thomas Church (located in the heart of the grad-student ghetto) in Ann Arbor during the 1980's. They failed. "Moving to the nuisance," (term of art) and all that. I wonder if they ultimately got city council to go their way.