Sound acustic large room

[Joel Arvidsson]

Hi I wonder what is the best way to reduce reverb in a larger room. I have been looking around, and most info is a small soundboth and maby a sligthly bigger control room. Im thinking a room say 10x10x4,5m. I want to reduce reverb from speach. Now I have special fabric on 3 of the walls thats absorb. Then I have a soft carpet over 1/3 of the floor. The sound is not that bad but hey, you can always improve. This time I want to fix the roof.
Theres alot of lights in the roof but theres alot of space that can be put some sort of absorbes.
I can think of thre ways to do it.

1. A soft acuostic foam with like a pattern glued in the roof.
2. Build a inner roof like you se on public buildeings (school, gym)
3. Hanging frames with acoustic materials.

I think nummer 2 would be more expensive and nr 3 the cheapest. I have a ok price on a acuostic foam absorbers that is 5ch thick and 120x200cm.

Can you chocke the sound to much? or is it good to get as soft walls, roof etc as possible? and of course also some diffusion pattern. Do I have to have bigger pattern in a bigger room?

Any good links or suggestions?

 

[Corrado Silveri]

http://www.vicoustic.com/vn/MusicBroadcast/SolucoesAcusticas.asp

Great service and price, imho...

 

[Corrado Silveri]

Homepage:

http://www.vicoustic.com/vn/MusicBroadcast/default.asp

 

[Joel Arvidsson]

I check the site!
I have noticed that some put aucustic on 3 of 6 sides of a room. Like 2 walls and roof.
The point of this is to never have two hard surfaces facing each other. What i dont unerstad
Is if this is better than treat all sides. Maby you need some hard surfaces to get a cleR sound? In my case im most intrested how the mic picks up the sound rather than the listen in the room.

Do you need bigger pattern in tthe foam in a bigger room? Its voices im interested in.

 

[Robert Frank]

Check for some info here: http://acoustics101.com/

It is a very complex subject, but how you treat the acoustic space will depend on how you plan on using the room and what you expect the sound quality (NOT good or bad) to be like. Do you want a completely "dead" sounding space, or one that sounds "natural"?

The typical "natural" room will sound controlled but be a bit more live than perhaps a totally dead VO booth. Again, in over simplified terms, you will need a mix of sound absorption and sound diffusion.

Depending on your final desired results the typical foam absorption will treat certain frequencies, and will generally be fairly broadband, but typically will not treat low frequency sound (500Hz - 250Hz or lower).

Diffusion will scatter sound so it loses energy but because it takes a little longer to lose all it's energy will sound a little more live. The diffusion will help a room sound live but not echoey, because the sound energy is no longer reflected as a coherent wave.

You need to decide on the use of the space before you can make final decisions in what approach to sound control you will need.

 

[Joel Arvidsson]

I ordered some acoustic foam. Then we se what we go from there.

 

[Joel Arvidsson]

I am very pleased with the sound now! I did mount some in roof and some plates on walls.

 

[christopher witzke]

I had an insulation company spray all my walls Qand ceiling with a material called k13

Comes in black, gray, or white and the fire Marshall approved it.

The room is completely dead and I'm sure my heating and cooling bills are lower as well.... In fact, I wouldn't be surprised if the k13 will pay for itself in a year or two.

The other option is using an insolation board that is meant for hvac ducts.... Called duct board. Comes in 4'x10 sheets and can be glued or screwed to the walls... And wrapped with a fabric as well. This board is very common in recording studios. My fire Marshall would not approve any fabrics over it though.... Even though I was buying my fabric from dazian in new York who supplies broadway theater with all of their curtains, scrims, screens, etc.

 

[Elmer Tenkink]

http://www.gearslutz.com/board/studio-building-acoustics/