Far more fun was the fact that the floor was sprung. It was like jumping
up and down on a large mattress. Even the door had the necessary acoustic foam stuck to it.
"[This] is an "Anechoic Chamber". It's used for measuring all aspects of sound - it
is a room that completely absorbs echoes and reverberations, so that you can precisely
measure the direction and level of sound coming from a loudspeaker (or any
other sound generator)."
"There's more on them here: http://en.wikipedia.org/wiki/Anechoic_chamber."
"If you sit in them on your own for more than a minute or so, you start
to hear the blood rushing round your head... They aren't very nice
places to get stuck in!" - Tom