We all know commercials are louder than the show you're watching, but how much and why?
I have a decibel meter here and it's pretty accurate.
I measure at 6ft from the TV in the center an average of 55db with a max of 72 during a movie.
then a commercial comes on and it measures an average of 72db and a max of 75.
When I worked for DirecTv I was told it was because the commercials gain was set all the way up for
everything- music, speech, sound effects.
makes sense when you look at my numbers.
A television programs audio gain is set up for subtlety and surprise/excitement to better engage you.
so... yeah, there you go.