circle_of_fifths
where the virtual space of equal temperament
meets the physical space
of 12 loudspeakers
06

photo:
rik de boe/lier 2006 as part of "heilige geest
3"
for
centurys, western music has been determined by the grid of the circle of fifths, establishing a virtual tonal space of 12 equidistant
pitches.
by
an offline-process of spectral filtering, these 12 pitches are
extracted from recordings of music. the resulting 12-track file
contains one pitch per track, but spread over the full orchestral
range.
this
file is played back through an array of 12 loudspeakers, arranged in
the order of the circle of fifths. the virtual space of tonal order
is thus projected into the real space of loudspeakers.
depending
on the postion of the listener, he hears either the original piece (=
equal distance to all speakers) or, to the other extreme, only one
pitch (= ear close to only one speaker). between those two extremes
lies a world of subtle to gross shifts in the perception of otherwise
well known music.
the
installation was first shown as part of the "3 HEILIGE GEEST
(WEEKEND) (30/9/2006-1/10/2006) at the voorkamer in lier / belgium