subs move air. is it the excursion that moves it, the sound waves produced, a combination of both?
and everyone knows if you light a cig (or weed to some of our regs ;] that smoke will move.
question is, say you put a 12" keeker in an SUV (blazer, durango, expedition, etc) and you can see your smoke "vibrating" maybe a centimeter away from where the smoke would normally be moving back and forth.
then you put 4 15" FI BLs in that same vehicle. more air moved, right? so would the smoke be displaced even further than it normally would if it were with no music.
and further more, if this theory is right (why shouldnt it be?) can anyone here make smoke movefrom point A (6" to the left of where smoke would normally rise) to point B (6" to the right of where the smoke would normally rise)?
i just think that would be cool seeing how smoke seems to "vibrate" with small amounts of SPL and then to see smoke "teleport" (optical illusion of course) over a foot because of so much air being moved.
"is it the excursion that moves it, the sound waves produced, a combination of both? "
the excursion makes the sound. sound is compression of air. think of it like when u have a long chain on the ground and u whip it. the chain will make a ripple role down the chain. hope that makes sense but the air is like the chain... it just has smoke in it. the lower the note the more of a distance the compression. spl is sound pressure level. so its more compression
As far as I know the distance smoke will move from sound is based of the frequency of the sound. Loudness just adds force to the waves.
The best way to see the effect is to put a drink in you car and see the waves in the water. Low notes are longer waves, high notes are faster short waves. The louder the music is the taller the waves get.
Yeah, You would need a very low note and it would have to be loud(so that it would have the force to move the smoke) to make it move a foot. Think of the videos of atomic bombs. They displace a lot of air(and whatever else is in the way) and then because the air has been pushed out there is a vacuum which pulls the air back.
I think I said what I wanted to. If not I'm going to blame it on me experimenting with sound and smoke in my car
""Yeah, You would need a very low note and ...loud... to make it move a foot.... displace a lot of air...and then because the air has been pushed out there is a vacuum which pulls the air back. ""
sounds like a good project.....*hint*
ok so i get it the lower the note the more air is moving, regaurdless. i guess i never broke it down like that. so you'd need something rediculously loud at a very low note to do what im talking about?
i understand its not new. i understood for the most part about air movement and everything that was explained to me, ive just been wonddering for awhile is all...
like obviously the louder something is the more air that is being displaced, right?
and if notes are lower they're moving motre air as well? so a really loud really low note should move a LOT of air?
i don't think lower notes move more air. from the classes i have had they move the same amount. but it sure does seem like low notes do. i think its because its pushing and pulling slower so you can really feel it and the objects usually resinate at lower notes
