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AdultSwim815
03-06-2009, 01:57 PM
My dad is finally going to try to find a way for me to be able to drum in my house again.
My idea to reduce sound (I'm really sorry, I make a topic like this monthly...) is now going to be hanging moving blankets while I drum.

Moving Blanket|Foot of Dead Space|Moving Blanket|Foot of Dead Space|Wall

That's my idea for treating sound leaving my room through the walls. Now my idea for treating the vibrations is build a small riser. With the riser I'm wondering how I should construct it. I know I want this to be basically a floating floor but obviously parts of the riser have to touch the floor so any ideas on how to effectively build a drum riser to reduce vibrations?

Also, one more thing, going back to the moving blankets. I read on eBay there is a seller selling "Acoustic Blankets" which look just moving blankets, anyway they are claiming each layer reduces sound by 10dB, do you think this is a fairly true statement?

I think that is all I have, please give me input and any other ideas how I can reduce sound in my room using moving blankets. Perhaps if I only leave 6" of dead space between layers and use 4 layers instead of 2? And I might lay a 2nd layer of 5/8" drywall on the inside walls (not outside as sound going outside is not as big of an issue as sound going into the rest of the house)

AdultSwim815
03-07-2009, 06:54 PM
Please, can someone give me some input?

-TGP-
03-07-2009, 07:15 PM
egg cartons my man
thick fabric works really well too

sLarkin20
03-07-2009, 07:21 PM
Egg cartons if you want to treat sound, not reduce it.

Aaron
03-07-2009, 07:52 PM
Think of when you're dressing to go out into the cold; if you don't have expensive stuff, to insulate from the cold you use lots of layers and make sure you don't have gaps.

It's the same thing for sound insulation. Sound travels through vacuums of air, if you break it up physically multiple times, and there's no gaps for it to go around that barrier then outside that vacuum the sound heard is reduced. Foam is good because of the materials make-up; it's thousands of closed spaces of air and that disturbs the movement from one vacuum to the next.

Pauly
03-08-2009, 03:26 AM
each layer reduces sound by 10dB, do you think this is a fairly true statement?

It could be true - but only for certain frequencies (it would most likely cut down the mid/highs). If an outsider is hearing a bass drum at 100db, and you stick that foam in between the kit and them, they'll still hear the bass drum at about 100db. Cymbals and drum overtones will be quieter. You'll probably get a loud, muffled sound.

Maybe build some "broadband absorbers" (google it) made out of Owens Corning 703 (rigid fiberglass), or rockwool or glasswool with a density of 40kg per cubic meter, and make a barrier around your kit. Then fill your bass drum as much as you can with blankets.

I'm not too sure about drum risers. What are the vibrations like when your kit is sitting on thick carpet?

AdultSwim815
03-10-2009, 09:17 PM
Okay, so for frequencies my toms and cymbals would be considered mid and high right? And then the bass drum is obviously low. I wasn't sure if toms were mid or low on the frequency spectrum. I think I'll fill my bass drum up as much as possible first, and if that doesn't do a good enough job in my eyes, I'll build a broadband absorber. It looks like it'd be pretty cheap anyway. I just hope I get to drum again, I'll keep you updated, should order blankets in a week or 2.

DrummerJonny
03-11-2009, 04:54 PM
with the riser, build a platform, with as few legs as possible to support the weight, youre better to build a really strong frame that only needs 4 legs than a lightweiht one that requires 12 or w/e. then you need to give tose legs some shock absorbsion. try foamboard on the bottom of each leg. then each leg would require a wide foot area to disperse the point pressure on it...