Plugins for VCV Rack and EYESY, software for samplers and synths, workshops, and writing on synth tool design.https://signalfunctionset.com/en-ushttps://signalfunctionset.com/projects/canon/https://signalfunctionset.com/projects/canon/A chord arpeggiator for VCV Rack. Four channels read one progression, each with its own pattern, octave and clock, and each free to wander from the chord.Mon, 12 Oct 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/carillon/https://signalfunctionset.com/projects/carillon/A physically modelled carillon for VCV Rack. Twenty-five tuned bells joined by rods you draw, with a strike rippling down them as far as velocity and reach allow.Mon, 12 Oct 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/count/https://signalfunctionset.com/projects/count/A narrow clock for VCV Rack. Six gate outputs, each with its own rate and its own mask over one cycle of steps, in 8HP and twelve knobs.Mon, 12 Oct 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/whats-new-in-2-22/https://signalfunctionset.com/projects/whats-new-in-2-22/Release notes for the Signal Function Set 2.22 VCV Rack plugin: Carillon, Canon and Count, new controls on Phase, and a performance pass across the whole library.Mon, 12 Oct 2026 00:00:00 GMTwritinghttps://signalfunctionset.com/projects/wavestack/https://signalfunctionset.com/projects/wavestack/A desktop wavetable builder. Draw and shape single cycles, sweep a whole table from keyframes, import Serum and Surge tables, and export in the format your synth or module expects.Fri, 02 Oct 2026 00:00:00 GMTeuroracksoftwarehttps://signalfunctionset.com/projects/whats-new-in-2-21/https://signalfunctionset.com/projects/whats-new-in-2-21/Release notes for the Signal Function Set 2.21 VCV Rack plugin: Flock, a murmuration as a granular voice, its Flock In expander, and time-stretching in Spool.Tue, 22 Sep 2026 00:00:00 GMTwritinghttps://signalfunctionset.com/projects/flock-in/https://signalfunctionset.com/projects/flock-in/An expander for the Flock granular voice in VCV Rack. Patch audio in and the birds sing grains of it instead of sines, with envelope, reach and freeze controls.Thu, 17 Sep 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/flock/https://signalfunctionset.com/projects/flock/A microtonal granular voice for VCV Rack built on a real flock. Up to a thousand birds fly as a murmuration, every call is a grain, and height in the flock is pitch.Thu, 17 Sep 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/field/https://signalfunctionset.com/projects/field/A random voltage source for VCV Rack. Nineteen jacks on a hexagonal grid read one smooth random field, so neighbouring outputs are related by geometry.Sun, 13 Sep 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/polykit-in/https://signalfunctionset.com/projects/polykit-in/An expander for Kit in VCV Rack. Every input of every instrument as its own jack, thirteen columns by eight rows, for racks patched from eight sources rather than one poly cable.Sun, 13 Sep 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/spool/https://signalfunctionset.com/projects/spool/A tape instrument for VCV Rack after the Mellotron. Four short tapes played by gates, with varispeed pitch, and a tape that never rewinds when you stop.Sun, 13 Sep 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/whats-new-in-2-20/https://signalfunctionset.com/projects/whats-new-in-2-20/Release notes for the Signal Function Set 2.20 VCV Rack plugin: Spool, Field and PolyKit In, plus rebuilt versions of Key and Kit.Sun, 13 Sep 2026 00:00:00 GMTwritinghttps://signalfunctionset.com/projects/kit/https://signalfunctionset.com/projects/kit/A physically modelled drum for VCV Rack. Eight instruments on one panel, each a struck membrane solved mode by mode, from tom and timpani to gong and tabla.Tue, 01 Sep 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/op-morph/https://signalfunctionset.com/projects/op-morph/An expander for Operator in VCV Rack. It puts the DX7 operator routing on screen as a matrix, and gives you a field of sixteen of them to travel across.Tue, 01 Sep 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/sigma/https://signalfunctionset.com/projects/sigma/An additive synthesizer for VCV Rack after the Crumar GDS. Up to 64 sine partials, with velocity morphing between two complete spectra.Tue, 01 Sep 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/trace/https://signalfunctionset.com/projects/trace/A drawn-CV sequencer for VCV Rack. Four brushes write onto a moving paper loop, and four read heads play the shapes back.Tue, 01 Sep 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/whats-new-in-2-19/https://signalfunctionset.com/projects/whats-new-in-2-19/Release notes for the Signal Function Set 2.19 VCV Rack plugin: five new modules including the Wheel hurdy-gurdy and the Kit drum model, a rebuilt Meter clock lock, and custom scales that now travel intact between modules.Tue, 01 Sep 2026 00:00:00 GMTwritinghttps://signalfunctionset.com/projects/wheel/https://signalfunctionset.com/projects/wheel/A hurdy-gurdy drone instrument for VCV Rack. One rosined wheel bows six strings at once, and the trompette's buzzing bridge keeps time.Tue, 01 Sep 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/slice/https://signalfunctionset.com/projects/slice/A stereo buffer slicer for VCV Rack. It cuts incoming audio onto a grid and reworks one slice in every N: cut, swap, delay, shuffle, reverse, stutter, or pitch down.Sun, 23 Aug 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/whats-new-in-2-18/https://signalfunctionset.com/projects/whats-new-in-2-18/Release notes for the Signal Function Set 2.18 VCV Rack plugin: Slice, a stereo buffer slicer, plus a run of Slide fixes from bug reports, manuals for every shipping module, and the static analysis gap that produced 2.18.1.Thu, 20 Aug 2026 00:00:00 GMTwritinghttps://signalfunctionset.com/projects/chime/https://signalfunctionset.com/projects/chime/An eight-note resonating drone machine for VCV Rack, after a xylophone whose resonator tubes rotate beneath the bars. Each note blooms as its tube swings through centre.Wed, 12 Aug 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/crystal/https://signalfunctionset.com/projects/crystal/A 3D echo chamber for VCV Rack shaped like a real crystal. Stereo in, quad out, with sixteen crystal habits traced by ray casting and four listeners standing inside the shape.Wed, 12 Aug 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/fill/https://signalfunctionset.com/projects/fill/A self-playing eight-channel drum machine for VCV Rack. 343 built-in pattern sets across three banks, pressure that builds and vents as fills, and a PHRASE control that sets the fill frequency.Wed, 12 Aug 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/key/https://signalfunctionset.com/projects/key/A quantizer for VCV Rack that takes its key from the patch. Read one Root and Scale and every module follows the same key change, with sub-scales, Scala import, and microtonal support.Wed, 12 Aug 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/loom/https://signalfunctionset.com/projects/loom/An eight-string physical-model voice for VCV Rack. The strings share one bridge, so a struck string rings its neighbours, with a continuous hammer, pluck, bow, and wind exciter.Wed, 12 Aug 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/slide-xp/https://signalfunctionset.com/projects/slide-xp/An expander for Slide in VCV Rack. It puts the eight strings on eight jacks, each with a gate in, velocity in, and level trimpot, so every string can go to its own destination.Wed, 12 Aug 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/slide/https://signalfunctionset.com/projects/slide/An electric lap steel for VCV Rack. Eight waveguide strings stopped by a steel bar, with bar slant for chords, rate-based glide, a volume-swell pedal, and ten steel-guitar tunings.Wed, 12 Aug 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/whats-new-in-2-17/https://signalfunctionset.com/projects/whats-new-in-2-17/Release notes for the Signal Function Set 2.17 VCV Rack plugin: seven new modules, including the Loom and Slide string models, the Chime and Crystal resonators, the self-playing Fill drum machine, and the Key quantizer.Wed, 12 Aug 2026 00:00:00 GMTwritinghttps://signalfunctionset.com/projects/nightly-builds/https://signalfunctionset.com/projects/nightly-builds/Signal Function Set now publishes nightly VCV Rack plugin builds on GitHub, rebuilt on every commit, for macOS, Windows, and Linux. Includes work-in-progress modules ahead of the VCV Library release.Sat, 18 Jul 2026 00:00:00 GMTwritinghttps://signalfunctionset.com/projects/whats-new-in-2-16/https://signalfunctionset.com/projects/whats-new-in-2-16/Release notes for Signal Function Set 2.16: six new modules including Arrange, Chance, Meter X, Cycle, Record, and Play, plus a shared-scale migration for Fugue.Thu, 16 Jul 2026 00:00:00 GMTwritinghttps://signalfunctionset.com/projects/arrange/https://signalfunctionset.com/projects/arrange/A song-form sequencer for VCV Rack. Eight phrases hold your song's sections (bar length, key, tempo) and four per-instrument clock buses drop each instrument in and out as the arrangement moves.Wed, 15 Jul 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/beat/https://signalfunctionset.com/projects/beat/A single-voice drum sequencer for VCV Rack. One Beat is one drum: eight patterns of sixteen steps, each step with velocity, accent, and probability, all edited on-screen.Wed, 15 Jul 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/chance/https://signalfunctionset.com/projects/chance/A generative melodic sequencer for VCV Rack. You don't program notes: you set a key and a few probabilities, and Chance walks a line through the scale. Every decision is seeded, so a pattern is a fixed, repeatable melody rather than noise.Wed, 15 Jul 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/meter-x/https://signalfunctionset.com/projects/meter-x/An expander for Meter. A 24 PPQN clock, a run gate, and bar-multiple triggers out to 128 bars, each with a pie chart showing how far through its cycle you are: structure that unfolds over minutes, not beats.Wed, 15 Jul 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/meter/https://signalfunctionset.com/projects/meter/A time-signature-aware master clock for VCV Rack. Six musical subdivisions with per-output swing, swung and grid jacks side by side, CV over the time signature, and external clock sync.Wed, 15 Jul 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/note/https://signalfunctionset.com/projects/note/A pitched CV/gate sequencer for VCV Rack. Beat's melodic cousin: eight patterns with per-step velocity, accent, and probability, plus a pitch matrix quantized to 19 scales including just intonation and Gamelan tunings.Wed, 15 Jul 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/play/https://signalfunctionset.com/projects/play/A polyphonic multisample player for VCV Rack. Loads .sfz or DecentSampler .dspreset instruments into a 16-voice engine with velocity layers, round-robins, loops, and per-note tuning.Wed, 15 Jul 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/record/https://signalfunctionset.com/projects/record/An auto-sampler for VCV Rack. Point it at any voice in your rack, press record, and it plays that voice across a range of notes and velocities and writes a complete multisampled instrument to disk: WAVs plus an .sfz.Wed, 15 Jul 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/whats-new-in-2-15/https://signalfunctionset.com/projects/whats-new-in-2-15/Release notes for Signal Function Set 2.15: two new DX7 modules, Operator and OP ENV, plus a gate-length overhaul across the sequencers.Wed, 01 Jul 2026 00:00:00 GMTwritinghttps://signalfunctionset.com/projects/metamodule-cheat-sheet/https://signalfunctionset.com/projects/metamodule-cheat-sheet/A quick reference for the 4ms MetaModule: button combos, knob mapping shortcuts, Knob Sets, MIDI, the action menu, patch operations, settings, and expanders.Fri, 19 Jun 2026 00:00:00 GMTeurorackmetamodulecheatsheethttps://signalfunctionset.com/projects/op-env/https://signalfunctionset.com/projects/op-env/A standalone DX7 operator envelope generator for VCV Rack. Loads a voice from a .syx bank and turns its carrier envelope into a gate-driven CV, with per-stage offsets.Fri, 19 Jun 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/operator/https://signalfunctionset.com/projects/operator/A 6-operator FM synth voice for VCV Rack in the Yamaha DX7 lineage. Loads DX7 .syx cartridges, plays them polyphonically, and ships with classic Brian Eno patches.Fri, 19 Jun 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/cycle/https://signalfunctionset.com/projects/cycle/A bar-synced quad LFO for VCV Rack. Four channels lock to your song's bar grid with morphing shapes, per-channel depth, and clock-quantized staircases: built to pair with Meter.Mon, 15 Jun 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/band/https://signalfunctionset.com/projects/band/A harmonic bandpass bank for VCV Rack inspired by Suzanne Ciani. Four narrow filters lock to integer harmonics of a shared fundamental that auto-tracks the input.Fri, 15 May 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/gravity/https://signalfunctionset.com/projects/gravity/A 30HP multi-mode chaos and motion engine for VCV Rack. Six engines drive a moving point read out as bipolar X/Y CVs, six sector CVs, and six boundary-ray gates.Fri, 15 May 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/muse/https://signalfunctionset.com/projects/muse/A VCV Rack recreation of the 1972 Triadex Muse by Edward Fredkin and Marvin Minsky. Eight sliders tap a binary network to generate long, structured algorithmic melodies.Fri, 15 May 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/shift/https://signalfunctionset.com/projects/shift/A 4-output CV shift register for VCV Rack. One signal in, four outputs each with its own delay, divider, and parallel-or-cascade mode, plus a jumbled bonus output.Fri, 15 May 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/vac/https://signalfunctionset.com/projects/vac/A semi-stable attack/release envelope generator for VCV Rack. Per-stage stability controls introduce musical cycle-to-cycle variation, like a real vactrol drifting.Fri, 15 May 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/building-modules-with-claude/https://signalfunctionset.com/projects/building-modules-with-claude/Notes from eight months of building VCV Rack, MetaModule, and Disting NT modules with AI assistance.Wed, 13 May 2026 00:00:00 GMTwritinghttps://signalfunctionset.com/projects/sfs-sequencer-system/https://signalfunctionset.com/projects/sfs-sequencer-system/A modular rhythm and pitch sequencer system for VCV Rack. Arrange holds the song form; Meter is the time-signature-aware master clock (with Meter X for long-form structure); Beat sequences drums; Note sequences pitched voices.Sun, 12 Apr 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/swell/https://signalfunctionset.com/projects/swell/A ping-driven envelope generator for VCV Rack. Each trigger adds a soft-saturating rise; the envelope decays back toward zero with linear-to-exponential curve shaping.Sat, 11 Apr 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/intone/https://signalfunctionset.com/projects/intone/A formant synthesis voice for VCV Rack based on the IRCAM CHANT project. Five parallel FOF cells with vowel morphing, audio excitation, and trigger modes.Fri, 10 Apr 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/tine/https://signalfunctionset.com/projects/tine/A tunable 3rd-order pingable resonator for VCV Rack based on the Gamelan Resonator circuit from Paul DeMarinis' Pygmy Gamelan (1973).Thu, 09 Apr 2026 00:00:00 GMTpluginseurorackvcvmaxforlivehttps://signalfunctionset.com/projects/phase/https://signalfunctionset.com/projects/phase/A dual sample looper for VCV Rack inspired by Steve Reich's tape phase compositions. Two loops drift against each other to generate evolving phase relationships.Mon, 06 Apr 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/overtone/https://signalfunctionset.com/projects/overtone/An additive synthesis VCO for VCV Rack that builds waveforms by toggling individual harmonics of the overtone series. CV-controllable mask and filter inputs.Sun, 05 Apr 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/intro-to-synthesis/https://signalfunctionset.com/projects/intro-to-synthesis/An interactive workshop on the fundamentals of subtractive synthesis. Build a classic synthesizer voice in VCV Rack from oscillator to VCA, then take it apart, with live Web Audio on every slide.Sun, 29 Mar 2026 00:00:00 GMTeurorackworkshophttps://signalfunctionset.com/projects/fugue/https://signalfunctionset.com/projects/fugue/An 8-step harmonic deviation sequencer for VCV Rack. Generates three voices of evolving counterpoint from a single melodic sequence using interval offsets.Tue, 03 Mar 2026 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/eyesy-simulator/https://signalfunctionset.com/projects/eyesy-simulator/A free native macOS and Windows simulator for the Critter & Guitari EYESY video synthesizer. Develop, test, and preview video synth modes without the hardware.Sun, 08 Feb 2026 00:00:00 GMTsoftwareeyesyhttps://signalfunctionset.com/projects/samplestack/https://signalfunctionset.com/projects/samplestack/A desktop sample manager for Eurorack and hardware samplers. Organize, browse, convert formats, and transfer sample libraries without the painful CLI workflow.Wed, 21 Jan 2026 00:00:00 GMTeuroracksoftwarehttps://signalfunctionset.com/projects/image-trip/https://signalfunctionset.com/projects/image-trip/An EYESY video synth mode that transforms static images into flowing kaleidoscopic animations by stretching and repeating rows and columns of pixels.Thu, 01 Jan 2026 00:00:00 GMTpluginseyesyhttps://signalfunctionset.com/projects/string-vibrations/https://signalfunctionset.com/projects/string-vibrations/An EYESY video synth mode that renders incoming audio as a scrolling 3D field of vibrating strings. Each string shows the waveform at a different moment in time.Wed, 31 Dec 2025 00:00:00 GMTpluginseyesyhttps://signalfunctionset.com/projects/granular-synthesis-workshop/https://signalfunctionset.com/projects/granular-synthesis-workshop/Workshop materials on granular synthesis: interactive timeline, curated mixtape, and historical notes from Fourier to Mutable Instruments. Run at Synth Library Portland.Sat, 13 Dec 2025 00:00:00 GMTeurorackworkshophttps://signalfunctionset.com/projects/gsx/https://signalfunctionset.com/projects/gsx/A real-time granular synthesis module for VCV Rack inspired by Barry Truax's pioneering GSX system. Grain density, duration, pitch, and spray under full CV control.Tue, 02 Dec 2025 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/drift/https://signalfunctionset.com/projects/drift/A 4-channel chaos LFO for VCV Rack with independent phase offset, per-channel scaling, and waveform morphing from sine through chaos. Built for generative patches.Sat, 08 Nov 2025 00:00:00 GMTpluginseurorackvcvhttps://signalfunctionset.com/projects/cubicles/https://signalfunctionset.com/projects/cubicles/An EYESY video synth mode: a 3D wireframe cube matrix with depth-of-field effects that pulses with brightness and color highlights in response to audio.Wed, 24 Sep 2025 00:00:00 GMTpluginseyesyhttps://signalfunctionset.com/projects/tempestuous/https://signalfunctionset.com/projects/tempestuous/An EYESY video synth mode inspired by classic vector arcade games: fly through a 3D tunnel that warps and pulses in response to incoming audio.Wed, 24 Sep 2025 00:00:00 GMTpluginseyesy