Stills from »The Clock«, 2011, 24-hour video by Christian Marclay.

“Dead Room” by Camille Norment.

For 3 minutes and 33 seconds at a time, eight large sub-woofers pulse a rhythm of bass frequencies that are too low for the human ear to actually hear. The space is silent, but the sound can be seen as the woofers throb their play cycles, felt as the sound waves move through the body creating a subtle intangible disturbance, and heard in the ‘helium voice’ disruption of the visitors’ voices.

“Audio Monitors” by Simon Blackmore. Resembling speakers, each monitor the sound levels in the space. When the the sound level is low led counters start to count up in seconds, displaying the amount of quite time in the space.

»10 seconds of safety«, 2007

»desperate pee«, 2007 by Jin Shan.