Moog Labyrinth - initial thoughts

The Moog Labyrinth is a unique parallel generative analog synthesizer and idea machine, blending East Coast (Moog) and West Coast (Buchla-esque) synthesis with two intertwining, evolving 8-step generative sequencers that create polymetric melodies and textures. 

It features decay-only envelopes, a state-variable filter, wavefolding, and parallel signal paths, designed to add unique soundscapes, rhythm, or color to a studio setup, either standalone or within a Eurorack system.  

There are two sequencers, and two sound paths letting you layer sounds.

The wavefolder is a Buchla thing. The filter is very East Coast Moog.

The 2 pole State-Variable Filter is interesting. I think its a new Moog design that blends between low-pass and band-pass, without self-oscillation. 

The sound sources involve two VCOs ... the top produces a sine wave (the main audio).

the lower VCO is mainly for modulation and produces a triangle wave.... its tunes to a lower frequency than the upper oscillator. 

(Its a interesting choice of waveforms ... there are no saw, square or pulse waves on this synth).

This vco  (FM) cross modulation is a common Buchla idea. The 158 for example used a saw-sine waveform

The audio signal passes through a mixer & noise source.

There are level (LVL) controls for each VCO & noise.

The noise has a tone control

There is also a ring-mod level control which controls the loudness

of the ring-modulated product of the two oscillators.

After the mixer, the signal passes to a filter and a wavefolder.

This can be both (parallel) or either.

The Buchla inspired voltage controlled wavefolder (VCW) is a diode-transistor circuit.

It has two parts: VCW Fold & Bias.

VCW sets the amount of wavefolding.

"Normally, when the gain of an input signal exceeds the headroom of a circuit, the tops and bottoms of the waveform are clipped off, causing distortion (such as in the Labyrinth MIXER). A wavefolder, however, folds the sections of the signal exceeding the floor/ceiling back in on the signal itself, creating new harmonics in the process"

(official manual)

The bias applies a DC voltage offset (achieving asymmetrical folding) to the signal entering the wave folder to emphasize even or odd harmonics.

The wavefolder an be modulated by EG1, SEQ1 & BIAS

These are the patches that came with the synth. A great way to start exploring.

These are just quick lo-fi recordings using my phone mic.

Instant techno drums

Myriads of Ivy

Polymetric Parallel voices