Anechoic Chambers

Unger Technologies anechoic test chambers, hemi-anechoic, and

quiet rooms are manufactured with modular, metal acoustical panels.

This modular approach allows us the ability to construct acoustical

rooms and chambers of various sizes, shapes and applications.

Each component is pre-engineered and can be interchangeable.

Our systems can include a selection of acoustical doors, windows,

ventilation systems, etc., to handle many different job requirements.

Totally integrated systems and designs include requirements such as

isolated floors, light and power connections, ventilation, temperature

and humidity control, instrumentation sleeves, control supports, working

floors, and single and double sound doors.

Unger can also supply, if necessary, a floating floor system to match

the acoustical isolation properties of the chamber walls.  Host site

conditions and the desired level of acoustical performance determine

the floor design parameters.

Quiet Rooms provide a controlled acoustic environment to conduct noise evaluations on a product or specimen without the interference of outside noises and vibrations. Typically used on factory plant floors or in-plant labs, Unger Technologies Quiet Rooms are specifically engineered for high sound-transmission-loss and sound-absorption ratings which provide excellent noise reduction characteristics.

Hemi--Anechoic Chambers provide an essentially free-field environment over a reflective plane (the floor) for the measurement of hemispherically radiated sound waves emanating from a sound source. Both types of chambers are well suited for rating sound output, and for providing directivity information.

Anechoic Chambers provide an essentially free-field environment for the measurement of spherically radiated sound waves emanating from a sound source. Anechoic Chambers are echo-free enclosures with a sound energy absorption level of 99% to 100%, or a reflected sound pressure level of 10% or less. The frequency at which the energy absorption drops below 99%, or the pressure reflection exceeds 10%, is known as the low-frequency cut-off. Sound absorption is obtained by lining the walls, ceilings, and floor with wedges or other sound absorbing elements, depending on performance level required and cut-off desired.