Is sound "additive"?


If I kept adding speakers playing at say, 70 db to a particular room, would the sound keep increasing? Wierd question, but I was thinking about how it sounds when a room fills up and people are talking -- it just gets louder and louder (though some of this is can be attributed to people speaking louder to compensate for others' talking). I was going to try and relate this to the effect (in SPL) of adding multiple subs to a room. Would it just keep getting louder and louder?
128x128felthove
Sedond, agreed! I was only pointing out that the answer to the question is not simple. In order for sound to be perfectly additive they must be exactlt in phase. If they are a degree or 2 different the sum will be different. I made no attempt to relate this to a subwoofer.