ACOUSTICAL TEST CHAMBERS
Memtech can work with any specification or design. We are happy to provide the advice and design help necessary to ensure the test chambers are built to the quality necessary for your noise testing requirements.
Below is a list of chamber types. While the solutions and suggestions are unique to each test chamber, feel free to use this as a guide to determine the type of chamber you are building. Memtech is committed to ensuring quality service and solutions for all your test chamber needs.
Anechoic Chambers
An Anechoic Chamber is required for precision-grade
sound power measurements. Such a chamber consists of
a high-transmission loss outer envelope (usually
constructed of concrete or modular steel panels)
with an interior cladding of anechoic wedges on
roof, floor and walls. A tensioned cable floor is
sometimes included to permit walking above the
wedges.
Hemi-Anechoic Chambers
Many test codes require the use of a hemi-anechoic chamber (such as for computers). Such a chamber consists of a high-transmission loss envelope with an interior cladding of anechoic wedges on roof and walls. The floor is intentionally made reflective, with an absorption coefficient of 0.06 or less, and is typically constructed of concrete or modular steel panels.
Reverberation Chamber
A reverberation chamber is used in precision-grade sound power measurements, and in sound absorption measurements. Such a chamber consists of a high-transmission loss envelope with sound reflective interior cladding. All measurements are made in the reverberant field of the sound source.
Free-Field Chamber
A free-field chamber is an approximation of a
hemi-anechoic chamber. Rather than carrying anechoic
wedges on the walls and ceiling, the chamber walls
and ceiling are treated with several inches of glass
fiber or a similar sound absorbing material. Small
rooms and those intended for low frequency testing
require a thicker layer, large rooms, and those
intended for high frequency sometimes have sound
absorption treatments as thin as 3 in.
Click here to view
Acoustical Test Chambers in our Photo Gallery
For more information on Acoustical Test Chambers, contact Memtech Inc.
