Sound proofing a wall.

off.the.walls

So i'm building a wall inside my rehersal room to make a seperate control room. Just wondering what is the best way to make this wall soundproof? its going to have a triple glazed window installed too.

syklops

Egg boxes. Lots of them.

off.the.walls

Any forms of insulation that would be any use?

Paolo_M

off.the.walls wrote: »

So i'm building a wall inside my rehersal room to make a seperate control room. Just wondering what is the best way to make this wall soundproof? its going to have a triple glazed window installed too.

Build another wall with an air lock between.
Eggs cartons do nothing to sound proof a wall.

off.the.walls

Paolo_M wrote: »

Build another wall with an air lock between.
Eggs cartons do nothing to sound proof a wall.

so say _ this represents the wall it'd be _ _ like that with a space in between i was thinking _-_ like that with the insulation in between

PaulBrewer

Very difficult proposition . The problem is usually flanking transmission i.e. Sound travelling through adjacent Walls floors ceiling etc .
The classic solution is the 'room within a room' which may well be too big a project.

We had a situation recently were the 'specced' triple glazed window on a project had twice the 'soundproofing' as the wall it was mounted in.
Unless your wall does perform save yourself the expense of triple glaze.

Imagine a gate standing at the edge of a field with no fence ....

drumdrum

Maybe instead of getting one massive slab of triple glazed glass, would you be better off just having a "window, gap, window" sort of pattern? An airlock between the sheets of glass, so to speak?

Anyways, what the lads above said is correct. Its often that the walls leak the sound, particularly bass frequencies. Hence, why I suggest putting some big bass traps on the walls either side of the glass in the live room.
Bass traps can be expensive though, especially large ones, so why not make some yourself, for a fraction of the cost?
Heres a great link to an online pdf that explains how to go about making your own bass traps.

hope this helps!

PaulBrewer

Your post suggests that putting bass traps in the recording room will cut down transmission into the control room, drumdrum.

As a rule that isn't the case.

The problem being that structure borne transmission happens through the floors/walls etc. not through the air.

Paolo_M

PaulBrewer wrote: »

Your post suggests that putting bass traps in the recording room will cut down transmission into the control room, drumdrum.

As a rule that isn't the case.

The problem being that structure borne transmission happens through the floors/walls etc. not through the air.

yup, hence the suggestion of building a room within a room with an air lock of some type between.

drumdrum

PaulBrewer wrote: »

Your post suggests that putting bass traps in the recording room will cut down transmission into the control room, drumdrum.

As a rule that isn't the case.

The problem being that structure borne transmission happens through the floors/walls etc. not through the air.

Yeah I get that, but unless you manage to seal one room within another room (or within a vacuum or something) pure soundproofing is very hard to attain in a home setup. Theres a reason why it costs major studios thousands and thousand of euros on soundproofing...as its hard to achieve.

What I suggested isn't an instant cure or anything. Its an aide at best.

The theory behind it is to keep as much of the frequencies in the room as possible, and/or to absorb as much of them as you can before they hit the walls and are conducted through them.
Of course the sound will move through the floor, but you can combat this by using thick carpets and things like that. I find that if you can put the drums on a sort of riser like they have on stages (doesnt have to be massive) it can help reduce the thump of the bass drum travelling through the floor. Same principal applies to a bass amp. Put it on a chair with a cushion under it or something to reduce the low frequencies creating a rumble effect.
The theories the same. Eliminate as much of the sound energy as possible before it hits the walls, floors and ceilings.

Of course, its not perfect, but for home applications or smaller studios it can be quite helpful, especially the bass amp tip.

TBH, I think that the OP should be more worried about keeping sound from bleeding into the live room than the other way around. If the microphones capture a great take, who cares if you can hear some bleed in the control room at the same time? I'd be more worried about some shmuck sneezing in the middle of a great take and ruining an otherwise great performance!:)