When you’re in an anechoic chamber—a room full of pyramid-shaped, foot-long absorbers located on the walls, ceiling and floor (there is typically a large screen providing the footing) that keep sound waves from bouncing around—the silence isn’t, as they say, deafening, but it causes a sensation that makes it seem as though the atmosphere is somehow thicker in there. The sound goes away. You move through the space (I’ve had the opportunity to be in chambers capable of accommodating cars and instrumentation, so these chambers are sometimes like large rooms that you could even dance in) and because the nearly silent audible cues that you don’t even pay any attention to in normal activities—sounds like the fabric of your clothes brushing as you walk—are absent, it is a bit eerie. Or a lot eerie. You can hear your blood pumping, though the sound has more consistency than a rhythmic beat. It is not a place you want to be in for too long.
It makes you appreciate, well, sound.
John Cage’s 4’33” (In Proportional Notation) was first performed by pianist David Tudor on August 29,1952 in Woodstock, New York. There are three movements to the composition. The movements, unlike those in other musical works, consisted of Tudor opening and closing the lid of the keyboard to mark each section.
Cage recalled, according to the Museum of Modern Art, “You could hear the wind stirring outside during the first movement. During the second, raindrops began pattering the roof, and during the third people themselves made all kinds of interesting sounds as they talked or walked out.”