Acoustical Performance Testing
Most advanced acoustical test lab for the measurement of sound absorption, sound power
testing, and sound transmission loss on building products and systems.
Unique test chamber design allows rapid testing of several specimens a day.
Field acoustic teams can be deployed from four laboratory locations nationwide.
Features 231 cubic meter receiving room sitting on fiberglass isolation pads to
decouple it from the source room and the rest of the building for optimum performance.
Participation by managers on all pertinent ASTM acoustic task groups.
Today, growing concern about the effect of sound on human performance is leading
to increased regulation. Consequently, accurate acoustical performance measurement
is critical for certification of building products, materials, and appliances,
as well as for providing valid data for architects, facility owners, and
The following acoustical characteristics can be evaluated by Architectural Testing:
Sound Absorption – measures a material’s ability to control reflected sound and
reduce noise levels, control reverberation, and improve listening environments. Random
incidence sound absorption is measured in a reverberation room for large objects (i.e.
wall panels, ceiling panels, office screens, bass traps, baffles, highway concrete barriers,
and theater or airplane seats). Normal incidence sound absorption is measured in a
two-microphone impedance tube for automotive and aerospace materials or R&D work. Specimens
can be tested in three different 1/3 octave band frequency ranges (50 – 1600 Hz, 200 – 3150
Hz, or 400 - 6300 Hz).
Sound Power – is a measure of the sound energy that is radiated from specific sources
such as appliances, power tools, office equipment, or any other device that emits noise.
Sound Transmission Loss – is a measurement of the attenuation of sound through a building
element or system. These elements could consist of windows, doors, interior or exterior wall
configurations, curtain walls, louvers, highway barriers, office panels, or other sound barrier materials.
Composite systems or building mock-ups up to 14' wide by 10' high can also be evaluated to determine
compliance to project specifications.
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Laboratory Test Equipment
The Architectural Testing acoustical laboratory is comprised of a control room, a
sound source room (207 cubic meters), and a receiving reverberation chamber (231
cubic meters). To meet customer demand for turnaround times as fast as 14 days,
Architectural Testing can employ up to seven test frames to facilitate the testing
of multiple specimens up to 14’ wide x 10’ high x 12” deep. Sound Pressure Levels
are captured by a Hewlett Packard Dynamic Signal Analyzer, and they are processed
automatically by a computer.
To ensure that the correct glazing has been installed in fenestration products,
Architectural Testing will laser-test the glass prior to testing. An infrared device is
also used to ensure that products containing viscoelastic materials (such as laminated
glass) are at the proper temperature prior to testing.
Architectural Testing maintains 100 mm, 57 mm, and 29 mm impedance tubes to cover the 1/3 octave
band frequency ranges of 50 to 1600 hertz, 200 to 3150 hertz, and 400 to 6300 hertz respectively.
An airflow resistance test apparatus can also be utilized to determine the porosity of acoustical
Acoustical Field Test Equipment
Architectural Testing laboratories in Texas (Dallas-Fort Worth), Minnesota (Minneapolis-St. Paul),
Illinois (Chicago) and Pennsylvania (York) can deploy field-testing vans to perform acoustical
field measurements. Each van is equipped with a Norsonic NOR 121 sound analyzer, several microphones
& preamplifiers, loudspeakers, a tapping machine, a reference sound source, plus devices to measure
environmental variables, such as temperature, humidity, and wind speed.
Field sound transmission loss tests can be performed on interior wall partitions or on floor/ceiling
systems between adjacent rooms. Outdoor-indoor sound transmission loss tests can be conducted on building
facades or facade elements such as windows, doors, curtain walls, etc. Field impact sound transmission
loss tests can be performed on floor/ceiling systems or floor topping materials.
Site noise assessments can also be conducted to determine if existing noise levels exceed local, state,
or federal noise limitations.
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Insights and Possibilities
To ensure the highest degree of confidence, Architectural Testing acoustical laboratories are fully
accredited by the International Accreditation Service (IAS) and the American Architectural Manufacturers
Association (AAMA). Architectural Testing has an accredited Acoustical Certification Program for the
certification and labeling of acoustical products.
Typical Test Methods
ANSI 12.51/ISO 3741
ASTM E 492
ASTM E 2179
ASTM E 1111
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Learn more about how the Architectural Testing Difference
can help you or Contact Us today.