A typical quiet room you sleep in at night measures about 30 decibels. A normal conversation is about 60 decibels. This room has been measured at -9 decibels.
Orfield Labs uses the room to test products, including switches that go on car dashboards and the sound an LED display makes on a cell phone to make sure they’re not too loud.
Anechoic chambers are really weird and cool.
One becomes incredibly sensitive to the sound of your body’s internal functions: not just the obvious heart beats, but also the pulsations of circulating blood, and the noise that your skin, muscles and bones make as they move.
I tend to become a little unstable in them. No doubt due to the inner ear feeling confused and that having a knock-on effect on it’s gyroscopic functionality.