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  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?
Felthove  (System | Threads | Answers | This Thread)

03-29-01
  Responses (1-14 of 14)
Click title to read one, or click date to read all below it.

03-29-01   Felthove-- you're right-- weird question, and thinking about ...   Garfish

03-29-01   If you were to add more speakers, yes, the sound will get lo ...   Njonker

03-29-01   I'm not sure if my math is correct but i *do* know that, bas ...   Sedond

03-29-01   Doug- i am pretty sure that you are correct. it is additive ...   Swampwalker

03-30-01   Thanks guys. that helps.   Felthove

03-30-01   Felthove, i am curious as to where you are going with this? ...   Jim

03-30-01   This is not an additive hobby. i can keep it to under 16 hou ...   Danvetc

03-30-01: Liguy
Actually this question is virtually impossible to answer with the information at hand. The sound coming out of your speakers can not be represented by a simple scalar value. It is not as simple as saying the output is 89db. The sound is however, a complex quantity where the sound possesses magnitude and phase. If the speakers, cables, electronics etc. were all exactly the same, it is theoretically possible they would all be in phase with each other and add perfectly. But because we live in an imperfect world where the signal paths would not be the same, some of the sound pressures could theoretically cancel each other out if they were 180 degrees out of phase which is exactly what noise cancellation scientists are working on right now.
Liguy  (Threads | Answers | This Thread)


03-31-01   As much as i enjoyed your posts, i am glad that i asked some ...   Felthove

03-31-01   Liguy, there is no theoretical reason why a properly set-up ...   Sedond

03-31-01   Btw, the proper reason to use two subs in a system instead o ...   Sedond

03-31-01   Sedond, agreed! i was only pointing out that the answer to t ...   Liguy

03-31-01   Liguy, i have no disagreements w/yer last comment... ;~) r ...   Sedond

03-31-01   Thank you sedond. you are a gentleman and a scholar.   Liguy


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