Modular · Utility

Turing Machine

A shift register of random bits: the melody locks or mutates

Open in the synth with a demo patch Open Modular

What it does

The Turing Machine is the main generative sequencer of the modular world. Inside is a 16-bit register: on every trigger the top eight bits are read as a number and turned into a note in the scale, and the register shifts — the last bit returns to the start, flipped with the Mutation probability. Mutation 0 locks the phrase into a loop, 100 is pure chance, and 5–20 keeps it recognisable yet slightly different every few rounds. Length is how many steps the ring has. The cv output gives the same number as a 0…1 voltage.

Ports

trig: Trigger: next step
out: Note of the step
cv: The same value as cv 0…1

Parameters

Length · Mutation · Root · Range · Scale

Try this

Start at Mutation 30, wait for a phrase you like and drop Mutation to 0 — it locks forever.
cv out → Filter cutoff at 0.3 depth: every note also opens the filter its own way.
Length 7 or 5 against a clock in 4/4 — the phrase crawls against the bar.

Other modules

Drone Voice Oscillator Noise Clock Divider Chance Random Note Quantize Sequencer Chord LFO ADSR Filter Delay Reverb Chorus VCA Mixer Attenuverter Scope Output Keyboard MIDI In Audio In Sampler Looper Note → CV CV → Trigger Follower S&H Euclid Macro Compressor EQ Pan Timeline Progression Note Wavetable Complex Oscillator String Formant Additive Supersaw Texture Resonator Drum Déjà Vu Function Logic Bernoulli Burst Slew CV → Note

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