  Sound
transference and vibration isolation can
often prove to be obtuse and
relatively difficult to understand.
Common problems like footfall from
upstairs neighbors, industrial noise
from machinery and HVAC equipment or
isolating speakers and scientific
devices can require completely different
approaches. Most often, an on site
assessment should be completed by a
qualified engineering professional to
determine an appropriate acoustic
solution. In many cases the
solution will require a modification to
the structure and implement more than a
single strategy.
This
simple vibration demonstration
challenges to provide a basic
understanding of how acoustical
materials may be used to prevent the
spread of mechanical noise and vibration
through existing structures like walls,
floors and ceilings.
In this acoustic demonstration, a
surface mounted piezo transducer
connected to an analog meter will
register levels of sound vibrations
transmitted to the table. A
vibrating device placed directly on the
surface will transmit sound vibrations
and resonate loudly throughout the
table. These vibrations will
register on the analog meter. By
inserting isolation materials between
the device and the surface, the
mechanical sound transmission is reduced
and sound no longer registers on the
meter. |
