3D Model
The Quadrature Oscillator generates
two sine waves which are always displaced 90
degrees in phase from one another. This phase
difference provides exactly the correct
relationship for swirling a sound through
quadraphonic space in a circular pattern.
Since the oscillator has a basic range from
longer than 20 seconds per cycle to 500 cycles
per second, many effects can be produced.
Swirling a sound at an audio rate produces
interesting spatial and modulative effects.
Additional features include linear
VCA's for each of the outputs, so that spatial
swirls can be made to decrease in size,
effectively spiralling inward.
A [HOLD] input 'freezes" the outputs
whenever pulsed high. Thus a swirl can be
stopped at a given location, with the sound
just 'hanging there' until operation is
resumed.
Switches
on the panel allow disabling the oscillator, a
feature which has been found to be useful for
live performances.
