The entire wall surfaces of the chamber are covered with sound-absorbing wedges made of glass wool, thereby greatly suppressing any sound reflected from the walls, so that the walls reflect virtually no sound that is generated within the chamber, thereby creating an acoustic environment extremely close to being a free acoustic field. To eliminate reflections from the floor, the floor is constructed as a net made of piano wire. This anechoic chamber features an extremely low background noise level, and can be used for measurements of microphone frequency response, auto-generated noise measurements, measurements of power level and sound intensity level in a free acoustic field, and other precise acoustic measurements.

This yellow wall is completely covered with wedges made of glass wool, which suppress the reflection of sound from the wall.
The floor is also covered with glass wool, with personnel and equipment riding on the wire net of a pier that juts out into the center of the chamber.	Each glass wool wedge id actually this big. This height becomes the depth of the wedge when mouned, which serves to absorb sound.