A psycho-acoustic environment, S.I.N, by Marc Marc is a using 16 loudspeakers through which noise moved up and down the 7m high V2_ stairs.
During Wiretap 1.02, this 'Sound Moving' installation was installed.
Along the stairs - deeply going downwards to the base floor of V2_ - the
loudspeakers were installed. This line of speakers from the top down to
the base created a zone of moving sound (two sounds of breathing,
moving in two directions, up and down) that gave a special effect when
walking the stairs.