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Non permanent isolation measures?
Old 29th November 2005
Gear interested

Thread Starter
Non permanent isolation measures?

I notice Ethan frequents these halls, as well as many other knowledgable bods.


Is it possible to have a maximum external db level of 35 from non-permanent isolation measures placed inside a room? (external meaning outside of the room).

here are some pertinent details:

The live room we are looking to isolate is relatively small. = L:3.7M W:4M H:2.8M The room is on the top Floor of a 2 Storey Building. The room sits between the live room and an office and is seperated on both sides by a block Wall. The floor is made of 15cm reinforced concrete and is on a different slab to that which the adjacent office is on. There is currently a 40Db isolation between floors. Bearing in mind we are looking to be able to record Rock instruments ideally we are looking to achieve a maximum external noise level of 35Db (recorded in the adjacent office) The build is not yet complete so I cannot give you current inter-room isolation figures.

any advice would be greatly recieved.

If the advice is that it's simply not possible (at ANY cost) I'll lean on the owner heavily to let me build.

Old 29th November 2005
Gear addict
peeceebee's Avatar

Two things reduce the transmission of sound- mass and decoupling.
So you need to devise a strategy using the heaviest materials possible, decoupled (not touching through a rigid contact) your existing structure, and of course completely enclosing the area where sound will be generated.
Old 29th November 2005
Lives for gear
Ol' Betsey's Avatar
Heya Paul,

Have you tried asking over here as well?

Acoustics Forum

Good luck,

Old 29th November 2005
Lives for gear
Ol' Betsey's Avatar

Yes I see you have...

Go get em'

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