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Carpet As Sound Insulation?


LordBTY

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Thanks guys :)

 

I actually meant to post this in the recording forum... my bad :p

 

I'm gonna move my 'studio' to the room down stairs (there's a hard floor and carpet floor down there) and buy some cheap carpet tiles and perhaps staple them to the floor.

 

Should I put it on the ceiling too?

 

..and what do you guys reckon I should do for the corners of the room along with bass absorption?

 

Also, how do you guys tame the resonance of metallic items that tend to resonate?

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Cheap, thin carpet tiles really don't do much for the acoustics, except in the ultra highs (and nothing for sound insulation). To get some real absorption you need deep pile, preferably on sponge underlay; not cheap unless you're tearing it out of somewhere.

 

Otherwise, for vocals, have a look at something like the SE reflexion filter (ugh, the spelling. I'm surprised they didn't call it a 'philtre', as a magic solution). It should be possible to bodge together something like this.

 

(Yeah, won't help with the drums much, but does guitars and flute quite nicely)

 

Ceiling is one of your main hard surfaces. If you can arrange it so it doesn't look parallel to the floor… no. not by collapsing one wall. Irregular shapes nailed to it; I suppose polycylindrics have a low WAF?

 

Looks out of window into studio Hm, corners. They seem to be traeted with unused mic stands and folding chairs, except for the inaccessible one behind the grand piano which has a roll of carpet, a guitar amp and a keyboard stand…

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Years ago, I was about to do the carpet thing, until I found a huge pile of used acoustic ceiling tiles. They are lighter, cleaner, paintable, easier to work with, and seemed to work as well. The are also unlikely to be covered with old pet urine. Call a couple companies who do suspended ceilings, and ask if you can raid their dumpster.

 

oldMattB

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Are you trying to make things sound better in the room, or keep sound from getting out of the room? The latter can be very involved, so I'm assuming that you're talking about the former.

 

In that case, you don't want to cover all surfaces with carpet. You won't do much to attenuate the bass frequencies, but you'll end up with a room that sounds very dead and "creepy" in the higher frequencies. It's best to cover some (but not all) surfaces with a thick, dense material that absorbs a wide range of frequencies. When I remodeled my studio, I built these acoustic panel/guitar hangers out of some wood, chicken wire, and fabric, and filled them with Roxul Rockboard 80.

 

DSCN0349R.jpg

 

DSCN0357R.jpg

 

They've done a decent job of balancing out the room's frequency response, and weren't too difficult or expensive to build. I managed to build 8 2'x4'x3" panels and 2 2'x4'x6" corner bass traps for about $200. I'm pretty confident that I got better results than I would have if I had spent the $ on any commercial acoustic products. I also picked up a few squares of conventional studio foam second hand on eBay. I noticed a little bit of a difference when I installed them, but when I installed the homemade panels, it was night and day.

 

Here's a website that was very helpful for me:

http://www.ethanwiner.com/acoustics.html

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