Rigid fiberglass V.S foam

[track pusha]

I am going to be moving in a few and I have a walk in closet i would like to turn into a vocal booth. I dont really need isolation, i just need a dry space to record my vocals in that doesn't sound bassy and boxy. I've come across a store on ebay that sells acoustic foam and bass traps, http://search.ebay.com/_W0QQfgtpZ1Q...sassZfoamforyou
but i've heard that rigid fiber glass is better. If i do get rigid fiberglass how would i apply it to the walls? would i just glue it to the wall like foam. and also how much does it generally cost.

 

[frederic]

Sound is energy, trasmitted through the air by vibrating the the air molecules. This is reduced over time because objects at rest want to stay at rest, i.e. why reverb in a room dies out eventually.

The way to reduce this is friction, which is what bass traps, rigid fiberglass, and acoustical foam is all about. Different frequencies reflecting around the room have different power levels, with bass frequencies having the most energy. So to absorb bass frequencies, you need more material as well as thicker material, in order to control and capture that energy.

This is where acoustical foam falls short, for lower frequencies there just isn't enough density to absorb them enough for them to be useful. Rigid fiberglass on the other hand, does a fairly good job of this, and absorbs mid and high frequencies too, making it an all around good absorbing material for recording studios.

While it is called "rigid fiberglass", it's only somewhat rigid, and because it's fiberglass you need to encapsulate it to avoid breathing the fibers. So you make yourself a 2'x4' wooden frame, staple cloth of your choosing to the back of the frame, and lie the fiberglass inside, then wrap cloth over the front of the frame (encapsulating the fiberglass), around the sides, to the back and staple it on top of the back cloth.

Then hang it using picture frame hangers.

 

[track pusha]

^^^ ok thank you frederic...But when you talk about breathing fibers it had me wondering about any health risk, are there any? and also why do you have to use a wood frame why not just wrap the fiber glass in fabric, and what type of fabric is good to use?

 

[notbradsohner]

wrapping it in fabric will keep the fibers from falling off.

you only need a wood frame because it is a lot easier to work with

any type of acoustically transparent fabric is fine. Put it up to your mouth, and if you can breath thru it easily, it is probably a good candidate. If you cant get full breaths in, you need to find something that isnt woven as tight.

 

[RICK FITZPATRICK]

But when you talk about breathing fibers it had me wondering about any health risk, are there any?

Only if you wear it like a face mask. Just kidding you. No, don't worry about it. This product has been through all kinds of tests for health issues.
fitZ

{PS) Say trackpusha, haven't we been through this whole thing with you before? Seems like it.