Sound Blocking/Barrier products typical1y
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 Outdoor settings where
sound transmission to other areas 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.
Another Problem area is containing equipment/machine noise
with use of hard or soft partial or full enclosures.
Outdoor Sound Absorption bas become a very important
neighborhood issue. Areas are typically reverberant
and need to have special attention paid to absorbing
the reflection off hard surfaces.
To
increase perceived noise reduction, sound absorption products
make for a more pleasant environment. 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.
