Occupational what?

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To the Editor:

At a wedding that I recently attended, the DJ explained to me that from his position behind the speakers it was hard for him to judge how loud the music was in front of the speakers. It is also distinctly possible that hearing impairment is an occupational hazard.

Would it not be sensible for every DJ to have a decibel meter app on their smartphone?

Bruce Nevin

Edgartown