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Alea
is a two voice semi-modular analog synthesizer with sine wave
oscillators, waveshapers, low pass gates, LFOs and a stochastic shift
register-based sequencer. These elements work together as a standalone
patchable instrument that is capable of everything from generative
melodies and morphing drones to psychoacoustic percussion and silky sub
basslines to esoteric techno and much more. The sine wave oscillators
have CV and FM inputs paired with attenuators for each input as well as a
two different voltage controllable waveshapers per oscillator which
affect the timbre of the oscillators - one type of waveshaper which adds
harmonics to shape the sine into a soft triangle wave, and the other
waveshaper folds and shapes the phase of the sine. The oscillators also
have sine outputs for modulating each other, as well as a vactrol-based
vca which is hardwired as a bi-directional modulation index that can be
opened via cv or gate signals for timbral cross-modulation between the
two oscillators. The oscillators can be used as completely separate
voices, or together with one voice acting as a primary oscillator and
the other as a modulation oscillator. The two voices also have
individual outputs. Each voice has a vactrol low pass gate with two
inputs per LPG - one regular gate input which will provide sustain for
the duration of the gate, and one input which coverts the gate to a
trigger for faster percussive sounds with no sustain and only decay. The
LPGs can also be patched so that they are held open to create drones,
or patched for amplitude modulation via one of the oscillators or
modulation sources.
The Alea has two LFOs - a LFO with
triangle and square wave outputs as well as a VCLFO with a triangle
output. The Alea's sequencer is based around a four-stage shift register
which is clocked by the VCLFO and collects data from one of the
oscillators for probabilistic pattern generation. The shift register can
also be clocked from external clock signals from other instruments. The
shift register cycles through it's four stages as it collects on/off
data on each clock pulse and creates different arrays of outcomes as it
cycles. Once the Alea has been patched and knobs have been set - the
shift register will continue to cycle through patterns and generate
different numeric combinations of it's stages in unity or in abscense
like a roll of the dice or a song of the birds.
I also have a 1979 - DR Rings module in "Buchla format" listed.
Shipping or Local Pick Up. No Returns.
| Listed | 3 years ago |
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