Plans for removable absorbers

[free_d20]

well at the moment im building a second studio used only for personal use. im actually not gonna build anything since it is already built, its around 5'*8' with a sloped ceiling going from 2' to 3' high. well the point is since this is for personal use i dont plan to spend lots of money in insulation so i was wondering if this would help keep most of the noise inside the room:

p.s. the room is in the 3rd floor (in case it matters)

[free_d20]

btw, im not gonna attach them to the wall. im planning on making a few pannels like this and just lying them against the wall (maybe ill benefit from the airpocket in the middle?). also... there are a few windows and something tells me this aint gonna be enough for them, so if you have any suggestions for the windows, you know what to do.

[Michael Jones]

I think you'll be REALLY dissappointed in the system you have drawn.
Take a look at these:
http://www.johnlsayers.com/HR/index1.htm
That's how ya do it.

[knightfly]

Free, if you're hoping that inside room treatments will help sound proofing you're REALLY going to be disappointed.

There are two SEPARATE concepts here - one is sound PROOFing, which keeps sound in and out of the room, and sound CONDITIONING, which only has to do with what the music sounds like IN THE ROOM.

There is almost ZERO interaction between the two. If your room "leaks" sound in or out, you need MASS in the walls, placed in only two places, with only one air space between the two, and you need WATERPROOF construction basically.

Anything else will be a disappointment... Steve

[free_d20]

well, im not sure if this is makes a difference but the sketch posted before wasnt supposed to have spaces between the pieces. here´s the "correct" sketch. btw, i am not looking to improve the sound in the room, im trying to avoid trouble with my neighbors (old couple + 120dbs of rock = lawsuit). since the room is in the 3rd floor and my neighbors´ house is only one story high im guessing i dont need "perfect" sealing, just as much as i can get with a FEW bucks.

[free_d20]

jeje, sorry here it is:

[foreverain4]

free,
what they are trying to say is that this is going to do absolutely nothing for keeping sound in your room. it wouldnt even pass for controlling acoustics inside the room. if you want to keep sound from coming out of your room, you need to build a room inside the existing one free standing from the original walls. you will need to apply resillient (sp?) channel to your studs, put a half inch layer of drywall, apply sheetblock, add another layer of 5/8" drywall, etc. all the while, sealing with culk as you go. you need mass, and it needs to be air tight. your drawing resembles an absorber, which is used to tame the inside of a room only, but the materials you want to use are not dense enough to absorb much sound energy.

[foreverain4]

http://www.acoustics101.com/basics.htm


read up.

[free_d20]

ok, i got the point. yet, i dont know what is sheetrock and all that stuff (i have zero knowledge in studiobuilding), so where could i find this stuff, or what are these materials made of, or any information of the sort is appreciated.

[Scinx]

Sheetrock is the material that most walls are built of - the white stuff which is nailed onto the framing of a house, etc. My best suggestion is that you either move to a new place or find an additional space in which to fool around cause building a room in a room requires either lots of time and skill or a pile of cash...it always requires that you are able to mess with the house which isnt usually an option if you are renting...

[knightfly]

Since you're in Honduras, there may be other methods that are cheaper - I recently discovered while helping an English poster on another site, that their cost for sheet rock was about 5 TIMES what it sells for in the US. Sometimes other masonry products make more sense because of this.

Sheet rock is actually a trade name, and other names for the same material in other parts of the world are gyp rock, gypsum wallboard, drywall, plasterboard, and probably a few others I've forgotten. It is manufactured in sheets ranging in thickness from 1/4" to over 1 inch, and in both metric and imperial sheet sizes from about 1meter by 3 meter, up to 5 feet by 16 feet. The most common sizes in the US are 4 x 8 feet and 4 x 12 feet, in thickness of either 1/2" or 5/8" - thinner types are for special purposes, such as curved walls and underlayment. Thicker types are for heavy duty fire rating, and can be used for better sound control although it might be cheaper (and easier) just to use multiple layers of the thinner stuff.

I don't have time to give a complete class on this, but here are some useful links to study -

http://www.saecollege.de/reference_material/index.html

http://www.customaudiodesigns.co.uk/help.htm

http://www.domesticsoundproofing.co.uk/tloss.htm

A couple of the less expensive books on building, if you need help with basics -

http://www.amazon.com/exec/obidos/tg...&vi=slide-show

http://www.contractor-books.com/RS/B...RCarpentry.htm

http://www.contractor-books.com/AT/Drywall.htm

Those are the least expensive of their type that are worth buying - books of this type can run over $100 and still leave you wanting simpler explanations... Steve

[Ethan Winer]

Free,

You got some good links and I'll add my Acoustics FAQ, 10th in the list here:

www.ethanwiner.com/articles.html

--Ethan

[free_d20]

thanks guys. i guess i´ve got LOT of reading ahead of me, so ill post later in case any ideas pop.