wood blinds for dead wall ?

How to use REW, What is a Bass Trap, a diffuser, the speed of sound, etc.

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trinit3
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Joined: Sat Dec 23, 2006 4:35 am
Location: Belgium

wood blinds for dead wall ?

Post by trinit3 »

Hi,

I'm thinking over the best possible solution for my back wall in my rather small room.

2 possibilities:
- super chunks in the 2 corners (something like 24"x40" in each corner)
- or, a wall full (8" rockwool, 8" gap)

I think the wall will work "better", because I immediately cover the corners between wall/floor, wall/ceiling (and wall/wall/ceiling, wall/wall/floor) as well (correct me i I'm wrong). This would be more practical in my small room as well.

But, like most of us, I'm a little concerned about a too dead room.

So I was thinking if someone already tried using wooden window blinds before a dead wall? Just to reflect some highs, it's not ment to be a slot resonator or something like that.

This way I would be able to adjust the reflection by opening or closing the blinds ...

Does this make sense ? :oops:
Just wondering :lol:
Ro
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Post by Ro »

It'll work as a little diffuser (well actually deflector) (highs only) sort of... but won't do much I quess. Dunno the size of yer room, maybe you could post some info of that first. Diffusion usually don't work well in small rooms (you need size to get a diffuser working).

Better think about absorption in that case.

And please take the time to fill in your profile.
Last edited by Ro on Mon Dec 25, 2006 9:11 pm, edited 2 times in total.
trinit3
Posts: 3
Joined: Sat Dec 23, 2006 4:35 am
Location: Belgium

Post by trinit3 »

It's a small room:
width: 2.8m
height: 2.4m
depth: 3m

I know diffusion doesn't work well in small rooms, but I just want to make sure it's not too dead.

In some studios (see pictures at http://www.metropolis-group.co.uk for example) you see walls of absorption and wooden stripes before it.
What would be the intention for doing this. Just to reflect some highs ... no?
I can't figure out how such a thing would have a calculated effect when compared to the "mathematical" helmholtz absorbers ... .

That's how I came to the wooden blinds, easier to install, can be adjusted, looks good, ... .
Ro
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Post by Ro »

a country with good beer, eh. Belgium?

Thaz indeed a very small room. Keyword is absorption here. In such a small room doing a cornerbass trap device might work, but dunno if you can spare the space. Walls/Ceiling also have corners, you could check if that's an option to add absorption (wool). Furthermore, read this forum, got lotsa info on small rooms already.
trinit3
Posts: 3
Joined: Sat Dec 23, 2006 4:35 am
Location: Belgium

Post by trinit3 »

What else than Belgium :wink:

Space is not with me here, but if the sound can be improved it has got to go :P

The reason I'm thinking of installing the "wall" of rockwool is to immediately cover the wall/ceiling and wall/floor corners as well, hoping that this would work better than just 2 corner bass traps from floor to ceiling. This wall would have 40cm depth: 20cm rockwool, 20cm gap.

Oh ... and Merry Christmas by the way :lol:
Ro
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Post by Ro »

that'll lead to mid/high absorption, you'll end up with lots of low-end (boomy room). Bass trapping/absorbing will also result in lower mids and highs, so you've gotta check that. Read and get to know about absorption.

As I said, walls/ceiling also have corners, usually that's some unused space waiting for some wool to be placed. Make use of whatever space you have left.

You might also build one or more resonant (presure) pannels, they will take up about 10cm of wall space and do some deep-base trapping.

There's plenty of info here in this "acoustics" section, so spent your holiday with reading. happy reading and x-mas :)
gullfo
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Post by gullfo »

the other concern about the wood shades would be them vibrating and possibly rattling... its always possible to try it out though and see if it works... if not, then you can approach it with a more calculated and measured approach (along with more precise construction etc...).

i was was thinking about strange things to try and had thought about a set of overlapping slot boards that you could slide up and down to adjust the amount of gap... (and to another degree depth of the slot in the overlap) not sure how it would work out exactly but once I draw it up I'll post it for comment....
Glenn
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