24 drawbar bands cycle to life in the Circadian Oscillator, producing pitch by variable sample rate or guided by phase step-through triggers. Define your own waveform, then stretch/mutate/wiggle/evolve/transform it with a variety of tools. With parallel mono and polyphonic connectivities, extensive CV control of everything, and a supporting cast of expansion control modules, this device is a capable engine of sound, with timbres to spare.

Drag the orange bars into place, use the forward/reverse switch or its CV jack to flip its direction, send a trigger to the reset/pos jack to synchronize it to another oscillator/clock. An octave switch makes it quick to travel from bass to top. Manually step through the 24 bars by sending triggers of various voltages (1/24th of 5V for the first bar, 2/24ths of 5V for the 2nd…) especially a sawtooth that’ll sweep through the waveform as guided by a secondary oscillator, whether at LFO or audio rates. CV control of fine tuning can introduce warble and dramatic sweeps can be achieved with coarse tune. The onboard volume/CV can be used to establish vibrato with an LFO and act as an amp with an envelope, or it’s just a convenient way to set the volume. The array of gold knobs at the bottom adjust the degree to which the bars respond to modulation and another row above the orange bars acts both as a modulation bias and as a physical recording medium for waveforms, preserving your drawn shapes as you add expansion modulators. Just above, a white button flattens these knobs to wipe things down. Three poly jacks (bottom right) are designed to accept expansion modulator units that have different approaches to controlling the waveform.

Of the expansion modules, the Amplitude Instantiator acts like a preset module where the knob locations take over control of orange bar locations. With the green toggle or its neighboring CV jack, a particular waveform can be instantly drawn to the bars. Connect several of these units, deploying them for rapid changes, perhaps by sequencer. The Modulator Breakout alternatively provides 24 jacks so that the orange waveform can be defined by external cv sources like LFOs, envelopes, and beyond. The Modulator Interface combines these two for cases where you want something in between. The Waveform Memorizor banks eight sets of saved knob positions, switching between them with the green buttons or triggers to their CV jacks. The highlight module, the Waveform Evolver sequencers four layers of waveforms defined by knobs, and smoothly interpolates transitions for something like wavetable behavior, but askew idiosyncrasy.

P module: Amplitude Instantiator

When paired with the Circadian Oscillator via the poly mod expansion jacks 1-8, 9-16, & 17-24, this device can instantiate a particular new waveform adjustment, instantly reshaping the oscillator with a click of the green button (or with a trigger to its neighboring CV jack) according to the values of its 24 knobs (1 per orange bar). A lower knob, within the “P” adjusts the magnitude of such adjustments, so you can readily increase or tame the adjustments as a unified whole.

Connect indefinite numbers of these to the same Circadian Oscillator and they can take turns reshaping the waveform, or they can act in various combinations to alter the sound with a moment’s notice.

L module: Modulator Breakout

Link this with the Circadian Oscillator via the poly mod expansion jacks 1-8, 9-16, & 17-24, and this device provides an array of 24 jacks for modulating the waveform with LFOs, sequencers, and all sorts of signals. On the connected Circadian Oscillator, knobs to bias or attenuate the modulations provide a helpful way of controlling what goes into the jacks.

On the other hand, if you want to modulate other units through polyphonic inputs, this device will let you do that on three sets of voices 1-8…

AY module: Modulator Interface

A more comprehensive version of the Modulator Breakout, this device also links to the Circadian Oscillator via the three poly mod expansion jacks labeled 1-8, 9-16, & 17-24 to modulate the oscillator’s waveform with LFOs, sequencers, and more, adding onboard knobs to shift signals up & down up to 5V (outer silver bias knob) or to reduce & magnify incoming signals by up to 1000% (inner orange magnitude knob). It is especially useful in multiples when you want to use several modulators on a single waveform band, but to different extents, mixing perhaps 10% of an LFO with 90% of an envelope and so on…

ER module: Waveform Memorizor

For use with the Circadian Oscillator, this unit attaches to the three poly expansion jacks labeled 1-8, 9-16, & 17-24 to hold 8 memorized waveforms ready for quick deployment. Select or activate a slot via the buttons (green, left) with trigger pulses to their neighboring jacks, and then shape the orange waveform with the 24 knobs. The positions are memorized between slots, immediately finding their places when called upon. Sequencing waveform changes is a breeze, and having multiple presets on hand is made easy. A lower knob (just above the ER) and its CV jack allow you to adjust the magnitude of the influence of the knobs, where lower values would merely influence the waveform and sweeping the knob allows for morphing into shapes or giving them a little wiggle. Using multiple units together creates possibilities for each to play contributing roles to the waveform, giving you the kind of combinatorics that open up generative possibilities…

TRON module: Waveform Evolver

The most exciting companion unit for the Circadian Oscillator, this unit attaches to the three poly expansion jacks labeled 1-8, 9-16, & 17-24 to mold the waveform with smooth, evolving transitions between four sequenced shapes. Progressing downward through four layers of knobs, each layer represents a waveform and the rate knob determines how often the shape is redefined. A separate evolution knob determines how quickly the wave mutates into its next incarnation during transitions. Each layer has eight knobs to represent every three bands of the oscillator’s waveform, acting as index points where transitioning bands in between are interpolated to bridge indices. Add one (or more) of these to the Circadian Oscillator to hear and watch its waveform gesticulate like the soft body of a jelly fish.

Waveform Transitioner

The Waveform Transitioner is like portamento for tone. An expansion unit for the Circadian Oscillator, the Waveform Transitioner is put between the Circadian Oscillator and any of its companion units to smooth throughput signals, allowing slow morphing between states. With flexible controls, each of the 24 waveform drawbars can be given individual transition speeds, while a global knob can make quick work of assigning the rate of change.

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