Tokyo
Circle - Technical details
Tokyo Circle - Technical details Tokyo Circle is an interactive audio installation
based on a changing virtual acoustic space that responds to the movements of the
spectator(s). It is basically meant to be performed by one person at a time, as
the connections between sound and movement are best perceivable for a single performer.
Tokyo Circle consists of an elevated disk on three pods, on which the performer
has to step on, a six-channel speaker system, a sensoric system that interpolates
the performer's position by a three-point mass measurement, and a device that
maps sound events to specific positions inside the circle.
The sensors inside the pods continuously measure the weight on each of them and
transform their measurements into electronic signals; a computer program calculates
the performer's position from the three signal streams. This means that the sound
will only be active when a performer enters the installation and only as long
as he stays inside the circle, because only then there will be a mass difference
to the original mass of the disk. The different sounds of the virtual acoustic
space are mapped to certain positions inside the circle or to an arrangement of
virtual concentric circles inside it, and are triggered once the performer enters
their positions. Another computer program controls this setup and the sample play
setup for the sounds on the speaker system.
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