hey, ive got a stupid idea about absorption!

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giraffe

giraffe

i love negative rep
could it be done (hypothetically) with a wall of speakers?
they'd probably have to be specially made etc......

but, the vibrations in the room would be turned into electricity (see "microphone") which could be "dumped" into like flashlight bulbs or some grave like that.


just thinking.....







look people, it says it's a stupid idea right in the title. :)
 
giraffe said:
could it be done (hypothetically) with a wall of speakers?
they'd probably have to be specially made etc......

but, the vibrations in the room would be turned into electricity (see "microphone") which could be "dumped" into like flashlight bulbs or some grave like that.


just thinking.....







look people, it says it's a stupid idea right in the title. :)
Click to expand...
Cool idea. Acoustic energy is very very small though, so wouldn't provide much electricity.
 
Someone told me years ago that speakers make for good absorbtion, which at the time made sense. They move, obviously, in a way that could/should cushion/absorb the soundwaves. I never bothered looking on the internets to see if there is any trutyh to this. I also realized that a few sheets of rigid fiberglass is a whole lot cheaper than a stack of decommisioned bass amps.
 
Yeah, but you could reverse-wire all the speakers and turn them into a wall of microphones!!! :eek:
 
scrubs said:
Yeah, but you could reverse-wire all the speakers and turn them into a wall of microphones!!! :eek:
Click to expand...
I think that was the point. But instead of using them for mics, trying to produce electricity.
 
giraffe said:
could it be done (hypothetically) with a wall of speakers?
Click to expand...

Not stupid, and your basic thinking is correct. However, loudspeakers cost much more than rigid fiberglass, and they won't absorb over as wide a range of frequencies.

I think it was the Bag End loudspeaker company that a few years ago developed an active bass trap based on a large woofer. I haven't heard much about that lately, probably because it was very expensive ($1,000) and was not as good as conventional bass traps. However, being active it had the potential to be highly effective at very low frequencies. If you had about 10 of them. :D

--Ethan
 
weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee


i'm apparently not stupid
(at the moment :D )
 
giraffe said:
weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee


i'm apparently not stupid
(at the moment :D )
Click to expand...
No... The idea's not stupid, we never said anything about you... :p :D

Kiddin'
 
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