sound-proof ventilation?

  • Thread starter Thread starter Dan Nims
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Dan Nims

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Are there any forumulas for designing a sound proof ventilation system for a small room. I'm thinking it would be a duct with 'baffles' to absorb the sound waves from one end before they get to the other.

The more sound-proof a room becomes, the more 'air-tight' it is. I'm thinking of creating a two ducts, one for exhaust and the other for fresh air. We own our home so there is not a problem cutting a hole in the closet wall. What I hope to avoid is making a mess and not solving the problem of isolating the room from outside noise. Ideas?

Dan Nims
Eugene, Oregon
 
I don't think it can be done. Ventilation requires air movement, which itself makes noise.
 
One can achieve a lesser or greater degree of isolation, if care is taken not to create a path for structural transmission of energy.

Soundproof? Not likely.
 
So many people have questions about this. Are you a handyman? If so, I would create two ducts, like you said, one for exhaust and the other for fresh air. You don't want it to get too, too hot inside! It's tough to get ventilation in a space. Make sure you have a fan, or a small a/c unit to help ventilate and keep it cool.

Hope this helps!
 
This thread is a few years old, but I was wondering about the ducts. Are you thinking about wall vents? And would the fan sit inside of one of the ducts?
 
I've got an A/C duct/vent in my studio....and I can just barely hear the air movement, but it's because the air handler is two stories up in the attic, and the actual duct is one of those "soft" insulated types, not the metal ones, plus as it passes from the attic to my studio, I ran it along the corner of a room one floor up, and it kinda zig-zags, plus I then boxed the vent in, so it's not even obvious that there's a duct going down from the attic, through the room, and into my studio.....and in that box, I stuff the carp out of it with fiberglass insulation.
So...taken as a whole, I think it helped deaden any sound transmission, and the airflow is strong but not very loud.

I guess if you're just looking for a duct with a fan to create some ventilation....you might want to make the duct NOT a straight line, and then surround it with a good amount of insulation. Also, I think the bigger the duct, the more air you move without that high-pressure noise.
 
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