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Excerpt
from an article on home theater sound proofing. This article suggests using acoustical
foam.
“Before
I tell you of the proper soundproofing techniques, you must
first understand a few principles of acoustics and
soundproofing. For your home theater, you must understand Sound
Transmission Class (STC) to determine what you will need for
your home. In short, STC is the average decibels (dB) lost
through a barrier across the range of frequencies 125 Hz to 4000
Hz. A high-end home theater will typically produce sounds as
loud as 100 dB to 110 dB. To compare this, a quiet room
typically hovers around 40 dB. For proper balancing when
treated, the wall between the two rooms should have an STC
rating of 60.”
”Typically, an interior wall composed of stud construction
with drywall on both sides has an STC rating of 30 to 34. If the
separating wall were to remain non-soundproofed, the dB in the
room adjacent "quiet room" would increase to 70 dB
(100 – 30 = 70). Considering that a loud home theater, at 100
dB is too loud to hold a conversation, the adjacent room at 70
dB would also be too loud to hold a conversation.”
“Adding
another layer of drywall will reduce sound by another 2 dB.”
”Putting insulation in a wall will reduce sound by another 3
– 4 dB.”
”Adding a plain foam barrier will reduce sound by less than 3
dB.”
More sites with soundproofing
materials:
http://www.buzzle.com/editorials/6-1-2004-54926.asp
http://order.americanmicroinc.com/cgi-bin/americanmicroinc/acoustical-soundproofing.html
List
of different types of sound proofing materials: http://www.controlnoise.com/tv-radio-acoustics.html
http://www.soundisolationcompany.com/products.php
http://www.soundprooffoam.com/
Home Theater Directory
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