About 23 dB during office hours. Need to test it on the weekend.
Room in a room construction. Walls are isolated from building structure. Floor is suspended and vibration isolated. Dual doors with acoustic gaskets.
Most of the residual noise readings are infrasonic. When taking readings you have hold your breath and avoid any movement of clothing. It is a bit like being in a tomb. The biggest shock is when you come out of the room after being in there for some time.
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Caelin Gabriel
President
Shunyata Research
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