Anechoic and Reverberation Chambers

The anechoic and reverberation chambers are both located in the VAL lab at Virginia Tech. Both of these are very useful in measuring a wide range of applications in acoustics. An anechoic chamber is a room whose purpose is to prevent any sound reflections or electromagnetic waves. Specifically, sound energy travels away from a source with no reflection back. They are used primarily for experiments in free field conditions.  An example of a test that could be done in this chamber includes measuring the sound pressure level or transfer function of a loudspeaker. A reverberation chamber is designed to create a diffuse sound field. All of the acoustic energy that hits any surface in the room is reflected back into the room. An example of an experiment to be done in this room could be to measure the absorption coefficient of a material.


Anechoic and Reverberation Chambers, respectively.