Sound sculpture is a medium based on environmental models of sound where the essential form is not identified with the physical limits of the sounding body, but with the physical limit of the space being made to sound.
The sense of time is that of a continuum; without apparent beginning, middle or end. The sound is not conceived as a logical structure unfolding in time but as a presence.
from: Bill Fontana, Thoughts on Sound, Edition Giannozzo , Band 28, Berlin 1983