Hockey isn't like that. The skates, the sticks, the pucks, the boards, the posts and the pings, it all creates a soundtrack unique to the game, and I think some of that could drown out voices from players, coaches and referees. I'd be blind to the situation if I said it would drown all of it out, but there are other ways to make the sounds of the game suitable for a television broadcast, potentially including a 7-10 second delay that gives the producers the opportunity to hear something that shouldn't reach the airwaves and quickly silence that part.