Downspout VST3 plugins

Downspout

VST3 tools for generated parts, gated movement, and playable disruption.

These plugins are all experimental, mostly work in progress, with various levels of success for their intended purposes.

See also :

Generative

Sources of musical material: melody, bass, drum and harmony generators, plus audio-triggered MIDI.

BassGen plugin interface MIDI generator BassGen Transport-synced bassline generator with style, scale, Moroder/Fugue/Jazz genres, variation, color, and MIDI follow/dodge controls. Mixgen plugin interface MIDI control generator Mixgen Eight repeatable mix lanes plus four configurable effect macros for the loosely coupled Producer Control Bus. MelGen plugin interface MIDI generator MelGen Phrase-aware melody generator with contour, answer, structure, color, range, follow, and strict subject/answer behavior. DrumGen plugin interface MIDI drum generator DrumGen Transport-aware MIDI drum generator with fills, style modes, Breakbeat/Jazz/Fugue genres, and sparse pulse options. Xoxolo plugin interface MIDI generator Xoxolo Simple x0x-style MIDI drum pattern editor with note-map presets, per-lane preview, and selectable 8-32 step patterns, and an optional cellular-automaton Evolve layer per lane. Sidecar plugin interface MIDI generator Sidecar MIDI phrase player for generated solo material with deterministic local generation and optional localhost coordinator requests. Harmonic Atlas plugin interface MIDI generator Harmonic Atlas Seeded autonomous chord and scale guidance with tonal, modal, chromatic-mediant, and neo-Riemannian-inspired movement. Conductor plugin interface MIDI generator Conductor Bar-aligned intro, development, break, reprise, and coda commands for autonomous patches. Polymeter plugin interface MIDI generator Polymeter Four Euclidean lanes with independent coprime lengths, rotations, ratchets, probability, accents, notes, and channels. ToneWorm plugin interface MIDI generator ToneWorm Paterson's Worm navigates a Tonnetz pitch lattice, generating transport-locked melodies from six directional rules with scale quantization and Conductor CC control. Ground plugin interface MIDI generator Ground Long-form bass generator with Grounded, Dub, Jazz, and other phrase styles plus a guarded bass register lane. Ghost plugin interface Audio/MIDI effect Ghost Audio-triggered ghost notes in time with the transport — ghost drum beats on channel 10 or ghost notes on a selectable channel, with Drift CC control over feel. Sprout plugin interface MIDI generator Sprout A grammar is rewritten generation by generation and played as a scale-quantised line, optionally growing one generation every few bars. Markov plugin interface MIDI generator Markov A melody as a random walk through a visible transition matrix you can draw, pick a style for, or learn from a line you play.

MIDI

Processors, modulators and utilities for shaping MIDI before it reaches an instrument.

M-Mix plugin interface MIDI effect M-Mix MIDI gate combining probabilistic bar transitions with Euclidean block patterns. Cadence plugin interface MIDI effect Cadence Transport-aware MIDI harmonizer and comping generator with learned harmony, color, extended voicings, suspended dominants, and arpeggiated phrasing. Arpgen plugin interface MIDI effect Arpgen Meter-aware chord-capture and scale-derived arpeggiator with four traversal orders and triplet grids. Counterpointer plugin interface MIDI generator/effect Counterpointer Learns an incoming MIDI pattern and emits a monophonic answering line with color control. Drift plugin interface MIDI modulator Drift Four rate-limited seeded CC lanes with LFO, sample-and-hold, walk, chaos, and audio follower modes. Mnemosyne plugin interface MIDI effect Mnemosyne Fixed-capacity phrase capture, recall, transformation, and autonomous recombination. Gremlin Driver plugin interface MIDI effect Gremlin Driver MIDI modulation and action sequencer with expanded lane shapes intended to drive Gremlin. Flues Synth Driver plugin interface MIDI controller Flues Synth Driver Turns its panel controls into MIDI CCs and program changes that play the external Flues vocal and physical-model synthesizer. Tuney VST plugin interface Instrument / MIDI generator Tuney VST Focused typing and stored text become microtonal synthesized audio and MIDI through configurable character maps, scales, tunings, and human timing. Midiscribe plugin interface Utility Midiscribe Non-destructive MIDI capture plugin that writes recorded events to a Standard MIDI File (.mid) on demand. Retune plugin interface MIDI effect Retune Retunes any MIDI note stream to a Scala .scl scale using one pitch bend and one channel per note, so ordinary generators can drive microtonal synths.

Instruments

Playable sound sources: synths, samplers and physical models.

Campione plugin interface Instrument Campione Multi-zone sampler with per-note MIDI mapping, WAV loading, REX2 slice import, Serum wavetable auto-detection, audio recording with auto-pitch detection, pitch-shift gap fill, zero-crossing loop snap, crossfade looping, per-zone ADSR/filter/pan, beat slicing, and an embedded MCP server. Bubbles plugin interface Instrument Bubbles Stereo ambient water synthesizer combining subtractive noise, physical bubble and drip modelling, body resonances, wave oscillator, and an LFO modulator — with seven water-environment presets. DrumKit plugin interface Instrument DrumKit Drum synth instrument with stereo output, MIDI triggering, per-voice controls, and mute strips. Syrinx plugin interface Instrument Syrinx Polyphonic MIDI synthesizer based on the Mindlin-Laje biophysical avian syrinx model, with 10 bird-species presets, chromatic MIDI pitch mapping, and a vertical-slider NanoVG UI. Gremlin plugin interface Instrument Gremlin Glitch instrument with six sound modes, scenes, fader-block macros, action triggers, hold pads, and MIDImix LED feedback. Mosaic plugin interface Sampler instrument Mosaic Four-slot bounded WAV sampler with seeded slices, pitch variation, reverse, stereo spread, and autonomous triggering. Floozy plugin interface Instrument Floozy Selectable 1-8 voice (default 4) synthesizer combining distortion sources, physical-model-style excitation, feedback, filtering, modulation, and reverb. Basilico plugin interface Instrument Basilico Monophonic bass instrument with tempo-synced wobble, acid squelch, and upright/electric/dub/acid/industrial tones. Canticle plugin interface Instrument Canticle 12-voice keys, reed, pad, pluck, and glass instrument for melody, counterpoint, and chord generators. Moka plugin interface Instrument Moka Stereo modal synth for struck objects — xylophone, glockenspiel, woodblock, glass bowl, metal sheet, and tube — with ten controls and eleven factory presets. Magneto plugin interface Instrument Magneto Physically informed four-stroke engine — waveguide cylinders, intake runners, extractors, muffler and tailpipe — driven by RPM and throttle, with a selectable listening position. Pratt plugin interface Instrument Pratt Eleven General MIDI voices and a stable all-pole filter, all shaped by the factorisation of an integer index — play it, filter audio with it, or both. Trajectory plugin interface Instrument Trajectory Eight-voice synthesizer whose oscillator is a point bouncing inside a regular polygon, with a full ADSR — six oscillator controls on CC 1-6, so Drift's lanes drive it with no setup. Fathom plugin interface Instrument Fathom Four-voice drone synthesizer with five generator algorithms, a notch filter and a delay network with a frequency shifter in its loop — CC 1-4 line up with Drift's lanes. Sam plugin interface Instrument Sam The 1982 Software Automatic Mouth speech synthesiser. Type text, then play it from MIDI, one word per note sung at the key's pitch, or let the host transport read it aloud, one word per step. Strata plugin interface Instrument Strata An eight-voice wavetable synthesizer with band-limited tables, Bend, Sync and Fold warps, a sine sub, unison, a multimode filter, two envelopes and an LFO. Quartet plugin interface Instrument Quartet An eight-voice four-operator FM synthesizer with eleven algorithms, band-limited sine, saw and square operators, per-operator envelopes, feedback, optional 2x oversampling, a pitch envelope and a filter. Monochord plugin interface Instrument Monochord An eight-voice waveguide string that can be plucked, bowed or struck, with a loop tuned from its own phase delay, damping, stiffness, a pickup comb and a small body.

Processors

Audio effects, mixers and analyzers for shaping sound.

P-Mix plugin interface Audio effect P-Mix Stereo audio effect for transport-aware probabilistic switching and fades. E-Mix plugin interface Audio effect E-Mix Transport-aware Euclidean stereo gate with density, block, pattern, and fade controls. Bassops plugin interface Audio effect Bassops Four-input sidechain ducker with optional harmonic stereo synthesis. A control signal (typically a kick-drum send) ducks the main stereo signal; the ducked result is summed to mono and the harmonics added by a waveshaper, high-passed at the cutoff, are decoded as a side signal that generates stereo width above it. The bass stays clean mono. Damiano plugin interface Audio effect Damiano Six-mode stereo distortion with drive, tone shelf, wet/dry mix and output gain. Linked or Split left/right processing for a binaural effect, with Drift CC control of each channel's drive and shape. Skream plugin interface Audio effect Skream SVF lowpass/highpass with ADAA2 feedback saturation. Recreates the Skrillex-era dubstep growl. Ten presets from classic growl to feedback drone; Cutoff and Scream modulatable via MIDI CC from Drift. Chipper plugin interface Audio effect Chipper 1980s video game lo-fi processor. Bitwise quantization (bit depth 1–16), sample-rate reduction via sample-and-hold (divisor 1–64), and randomised clock jitter for vintage digital harshness. T-Mix plugin interface Audio mixer T-Mix Eight mono strips with manual controls, click-smoothed producer overlays, channel-isolated CC 19 ownership, and MIDI-through. Loopdelay plugin interface Audio effect Loopdelay Producer-ready stereo delay and looper with BBT time, CC 19 ownership, channel isolation, and MIDI-through. Lightverb plugin interface Audio effect Lightverb Fixed-cost stereo reverb with Producer Control Bus lifecycle, channel isolation, and MIDI-through. Gater plugin interface Audio effect Gater MIDI-controlled audio switcher routing one input to one of two outputs based on note input. Rift plugin interface Audio effect Rift Transport-locked stereo buffer effect with live/sample modes, WAV loading, chop/stutter repeats, reverse, skip, smear, and pitch-slip actions. Orchid plugin interface Audio effect Orchid Transport-aware voiced freeze effect that captures stable pitched material and holds period-aligned loops on the host grid. Oracle plugin interface Audio/MIDI effect Oracle Bounded level, onset, brightness, density, pitch-class, and MIDI analysis mapped to guarded CC and note responses. Resonance Garden plugin interface Audio effect Resonance Garden Up to twelve bounded damped resonators tuned by held MIDI or an internal scale chosen from 23 scales. Orbit plugin interface Audio effect Orbit Smooth seeded orbit, pendulum, random-walk, and figure-eight stereo trajectories with distance filtering and conservative Doppler. Guardian plugin interface Audio effect Guardian Input gain, look-ahead limiting with attack and release, variable-curve clipping (soft to hard), DC removal, true-peak protection, bypass, and latched fault recovery. Ambo plugin interface Audio effect Ambo Stereo ambient effect with rearrangeable time, spectral, tape, shimmer, delay, drive, and feedback stages. Primefold plugin interface Audio effect Primefold Direct 2x/3x/5x pitch voices with non-prime harmonics supplied by recirculation — 4x from 2x fed back, 6x from 2x and 3x combined — through a bounded loop with an explicit delay that is never compensated. Quefrency plugin interface Audio effect Quefrency Splits each frame through the cepstrum into a formant envelope and a harmonic structure, shifts and reshapes each independently, and multiplies them back together — with the latency the web version never reported now declared to the host. Spliff plugin interface Audio effect Spliff Transient processing in the Spiff manner — dynamic cuts or boosts that apply only where transient energy lives, steered by a 3-band detector, with Drift CC control. HelterSkelter plugin interface Audio effect HelterSkelter Automatic wah — a resonant lowpass played by the input envelope and/or a BBT-synced ADSR cycle, with Drift CC control. Keyframe plugin interface Audio effect Keyframe Time stretch after the DAFx26 extrema-sampling method — the input reduces to timestamped local extrema, and the spacing between them sets the overlap-add crossfade length, so splices shorten into transients and lengthen through sustained material with no transient detector anywhere. Treatment plugin interface Audio effect Treatment Physically modelled acoustic treatment panel — a mass-air-mass absorber whose resonance and absorption come from real panel geometry and fill. Voxmod plugin interface Audio effect Voxmod Combined vocoder and ring modulator — a filter-bank vocoder and a band-limited ring modulator run in parallel and blend with Mix. Beards plugin interface Audio effect Beards Granular texture processor after Mutable Instruments Beads — a 4 second stereo buffer replayed by up to 32 grains, with feedback, freeze and reverb, controllable from Drift and Conductor. Qune plugin interface Audio effect Qune Tracks the pitch of a voice or single-note instrument and moves it to the nearest note of one of 24 scales, or to MIDI notes you hold. Three quality tiers, glide, formant preserve and shift. Sinevox plugin interface Audio effect Sinevox A formant tracker with two voices — a vocoder whose band-pass bank follows the speech's formants, and a sine-wave-speech generator — with MIDI control and formant-to-MIDI output. Grist plugin interface Audio effect Grist A grain delay. The input is cut into windowed grains, each with its own start, direction, length, position and pitch (optionally held to a scale), and the result can feed back through a filter. Ladder plugin interface Audio effect Ladder A four-pole saturating low-pass ladder with self-oscillating resonance, a bass-compensation control, drive, mix and output, and a live plot of its response. Glue plugin interface Audio effect Glue A stereo-linked bus compressor with a soft knee, sidechain high-pass, peak or RMS detector, program-dependent auto release, soft clip and parallel mix, showing its transfer curve and gain reduction. Octet plugin interface Audio effect Octet An eight-band parametric equalizer with bell, shelf, notch and 12 or 48 dB cut bands, Stereo, Left/Right and Mid/Side modes with per-band channel assignment, and a plot with a draggable node per band. Trio plugin interface Audio effect Trio Three-band dynamics with adjustable flat-summing crossovers, per-band downward compression and upward lift, Time and Amount macros, and live per-band gain bars.

Launchpad

Plugins built around a Launchpad grid, with pad input and LED feedback.

Plank plugin interface Instrument Plank Eight-voice polyphonic synthesizer for the Launchpad grid, with a Plinky-derived wavetable voice and Plonk-style resonator engines. Luma plugin interface MIDI generator Luma Launchpad-oriented performance generator where lit pads become bass, chord, melody, and drum agents. PaunchLad plugin interface Audio effect/instrument PaunchLad Launchpad dub performance effect with echo throws, sirens, spring splashes, dropouts, and chops. Lifeform plugin interface MIDI generator Lifeform Conway Game of Life MIDI generator where the Launchpad grid evolves one beat at a time.