bass traps in slanted corners ?

[boggy]

I see no picture here... or it is only me?

[amaurythewarrior]

no it was not you ! it should be fine now !

[amaurythewarrior]

am i really the only one with a odd room shape like this ? i'm sure not, but i can't come across any picture dealing with acoustic treatment ...

[johnnygri]

Originally Posted by amaurythewarrior

am i really the only one with a odd room shape like this ?

+1 my room is like that. I'm interested to hear any answers too.

[amaurythewarrior]

well that's a start ! now i'm interested to hear what the experts have to say ... and also the not-so-experts! this situation is only rarely covered ...

[amaurythewarrior]

okay then i guess it's up to me ! now i have to figure a way to easily attach them and move them around ...

[kasmira]

I would recommend placing porous absorbers anywhere where you can clearly hear a lot of boom.

The reason corners are usually suggested is because there is typically a lot of sound 'forced' into it, simply put. When you place a trap in this area sound has pretty much nowhere to go other than into the absorber. Sound likes to diffract around basically everything, including absorbers (another reason why absorbers with low gas flow resistance, like pink fluffy insulation for example work so well - sound doesn't diffract around it as much, and is more likely to pass through), so when you give it no other place to go but absorber...you'll see better results.

A corner such as that ~135 degree corner won't have nearly as much buildup as a 90 degree corner in most circumstances, but could easily still be a good area to trap. I like it because it is out of the way and utilizes an air gap which are both beneficial. However, an easy spot to trap with very large, very porous absorbers would be your floor-wall corners that have the small part of the angled ceiling above. That entire area filled with pink fluffy would likely save you space (since it is more than likely not used anyways), will save you money, and should work sufficiently well.

[amaurythewarrior]

interesting. you see, i didn't consider this at all because on the higher side i have my desk, which covers the entire width, and on the other my bed ... but now that i think about it, maybe i can pull them back a little and put my bass traps here ? at least it would not require any mounting, so i guess it's worth a try !

but doesn't the bed already contribute to absorption in that area ? it certainly does, but i'm not sure to what extent ... on the other hand, the area under my desk must create some kind of a cavity that resonates ...

i guess i should by using my hear a little more, than just theory or numbers ...

[kasmira]

Originally Posted by amaurythewarrior

interesting. you see, i didn't consider this at all because on the higher side i have my desk, which covers the entire width, and on the other my bed ... but now that i think about it, maybe i can pull them back a little and put my bass traps here ? at least it would not require any mounting, so i guess it's worth a try !

Exactly...plus they can be quite large and deep compared to the ones you planned to hang above..which means that they can and will absorb better at lower frequencies.

Originally Posted by amaurythewarrior

but doesn't the bed already contribute to absorption in that area ? it certainly does, but i'm not sure to what extent ...

Not much on anything below mids!

Originally Posted by amaurythewarrior

on the other hand, the area under my desk must create some kind of a cavity that resonates ...

Sort of, but thats not really the correct way to think about it. It doesn't resonate - there is simply just more sound pressure in these areas.

Originally Posted by amaurythewarrior

i guess i should by using my ear a little more, than just theory or numbers ...

[jinksdingo]

From advices I have had it best to bass trap every where in a small room and add some diffusers over them later for some life.

[amaurythewarrior]

are you telling me you think i should put bass traps on the walls too ? those on the walls and ceiling are going to be more dense, but only half as thick. and i can't space them much from the wall ...

[jim1961]

Originally Posted by kasmira

I would recommend placing porous absorbers anywhere where you can clearly hear a lot of boom.

The reason corners are usually suggested is because there is typically a lot of sound 'forced' into it, simply put. When you place a trap in this area sound has pretty much nowhere to go other than into the absorber. Sound likes to diffract around basically everything, including absorbers (another reason why absorbers with low gas flow resistance, like pink fluffy insulation for example work so well - sound doesn't diffract around it as much, and is more likely to pass through), so when you give it no other place to go but absorber...you'll see better results.

A corner such as that ~135 degree corner won't have nearly as much buildup as a 90 degree corner in most circumstances, but could easily still be a good area to trap. I like it because it is out of the way and utilizes an air gap which are both beneficial. However, an easy spot to trap with very large, very porous absorbers would be your floor-wall corners that have the small part of the angled ceiling above. That entire area filled with pink fluffy would likely save you space (since it is more than likely not used anyways), will save you money, and should work sufficiently well.

+1