Sound Blocking/Barrier products typically
involve mass. These products help block noise from traveling
from one area to another. Sound Blocker/Barrier Products
carry a comparative STC number that reflects the approximate
Dba reduction with use of that product.
Remember
- anything water can pass through - sound could pass through.
These products can be of use in areas where sound transmission
to other rooms is a problem. The use of composite materials
that have a layer of Barrier material with the addition
of at least one layer of absorption material is also a
nice solution that can block and absorb. Products are
also available to block sound where floor-to-floor sound
transmission is a problem in apartments/condo's and town-homes.
Sound absorption products can be a very important element
in condo's, apartments and town-homes. If these areas
are reverberant, they need to have special attention
paid to absorbing the reflection off hard surfaces.
To
increase speech intelligibility and perceived noise reduction,
sound absorption products make for a more pleasant listening
experience. Absorbing products are typically porous products
that help knock down reverberation off hard surfaces.
These products carry an NRC number that is a comparative
number telling what percentage of reflection is absorbed
at certain frequencies. It is best to choose a product
that has a good NRC at your offending frequency.
