Making a large room echo

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Making a large room echo

Postby libby90 » Thu Oct 25, 2012 7:43 pm

Hi,

I'm a art student and for my next exhibition I would like to make the gallery space echo. The space is quite large and there will be other art works in the room. Also, on the opening night there will be lots of people and people moving in and out of the space. From what I've read I need to make surfaces as reflective as possible and try and round corners etc. However I'm guessing I'm going to have to do a lot given the amount of sound the people will absorb. I want the kind of acoustics of a swimming pool.

Is this even possible? And if so any tips on certain materials and things I can do to achieve this? I can't interfere with the presentation of other works so I can't do too much to walls.

An help would be much appreciated.
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Re: Making a large room echo

Postby Scott R. Foster » Thu Oct 25, 2012 8:48 pm

Perhaps create the effect electronically = fix an omni mic to rebroadcast its signal on the other end of the room with thick reverb processing]. Play around in the space... maybe you could site several self-powered speakers fed by several mics located across the room to create a super saturated reverb field [might better have someone on hand to monitor it for feedback loops when the crowd shows up].
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Re: Making a large room echo

Postby Scott R. Foster » Thu Oct 25, 2012 8:49 pm

and post pics of the space... no pic / no venue
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Re: Making a large room echo

Postby libby90 » Tue Oct 30, 2012 5:32 pm

is there no way of doing it without cheating and using electronics?
Here's a link to a virtual tour of the space:
http://www.chelsea.arts.ac.uk/virtual-t ... gle-space/
I've also attached a photo where you can kind of see the ceiling.
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Re: Making a large room echo

Postby Ido » Tue Oct 30, 2012 6:27 pm

is there an acoustic ceiling?
if not, it looks pretty big and reflective as is, and not much more you can do.
if there is, try covering the panels with reflective material or take em off.
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Re: Making a large room echo

Postby Scott R. Foster » Tue Oct 30, 2012 9:34 pm

axe the balloons and that space looks about as reflective as human space gets... maybe get everyone to wear show taps?
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Re: Making a large room echo

Postby Bob » Wed Oct 31, 2012 12:20 am

I see 5 absorbers.
Two smaller blue ones, one of which has blue white stripes and dashes of red and green.
Three larger black ones, with a bit of white and grey.
What happens if you get all the portable abosrbers out?

And the two photo tarps probably don't help the echo in that direction. So, in this art gallery, if you get rid of the art and the people, it could be better. (It's a plan.)

BTW, parallel reflective walls (wall-wall, wall-ceiling) are better for echoes, as are concave walls (or huge objects) when standing in the focal point.
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Re: Making a large room echo

Postby Scott R. Foster » Wed Oct 31, 2012 1:10 pm

Bob... are you trying to get the wimmin to take their shirts off again?
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Re: Making a large room echo

Postby libby90 » Mon Nov 05, 2012 5:16 pm

Thanks guys.

Probably a really dumb question, but what is a good, cheap reflective material to buy? Or is there some kind of paint I can use?
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Re: Making a large room echo

Postby Scott R. Foster » Mon Nov 05, 2012 7:51 pm

Something dense - mounted rigidly [no wiggling] - with a smooth surface /no holes - painted 1/2" MDF?

Would only make a big difference if it was an appreciable % of the room's boundary surface area & covering up something that is rather absorptive - so you are making a big change over a large surface.
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