Les

FM-1 firmware · 2.0.1

FRASIL

An ambient drone instrument: tap keys to latch drones or chords in your key, with icy FM bells above, a bass below and big reverb.

Made by
Styves Goupil
Released
October 25, 2026
Install
On the FM-1 Firmware Hub · source on GitHub
Scan
Not scanned yet What we checked
Last checked
October 31, 2026

What FRASIL does

  • Tap a key to latch a drone note or chord that rises slowly and stays, up to eight voices.
  • Every drone voice layers CHOIR saws, PARTIALS additive harmonics and BREATH noise through tuned resonators, each mixed and shaped.
  • PRESETS turns through 24 drone presets, ALGORITHM thins the drone with BODY, and any edit becomes your CUSTOM.
  • GLINT plays four voices of icy FM bells with 22 presets, an arpeggiator and a 32-step sequencer.
  • BASS holds one deep note from eight models, or runs a 16-step line of NOTE, CUT and HOLD.
  • Everything flows into CLOUD, a reverb with shimmer and FREEZE, its tail from 0.4 to 60 seconds.
  • Sixteen scenes keep the sound, tempo, latched drones and both sequences, and morph in over up to two minutes.
  • MIDI over USB and TRS gives each track its own channel and runs the sequencers from incoming clock.

Its modes

SOUND
The play page, where your drone voices drift as currents of ice and K1 to K4 set CHOIR, PARTIALS, BREATH and WARMTH.
MIXER
Move faders and watch live meters for DRONE, BASS, GLINT and CLOUD.
DRONE PARAMS
Shape the whole drone with TIMBRE, SPACE, MOTION and BODY.
DRONE SHAPE
Set how a drone rises and fades, plus how far pressure and velocity take it.
HARMONY
Choose ROOT, SCALE, CHORD and VOICING so every key you tap belongs to the key.
GENERATIVE FX
Perform on the whole sound with SWELL, SPARKLE, BLUR and SINK.
CLOUD
Set the reverb's SIZE, DECAY and TONE, and hold it with FREEZE.
GLINT SEQ
Write and record GLINT's 32-step line, step by step or live, with accents and ties.
BASS SEQ
Build the bass's sixteen steps as NOTE, CUT or HOLD, each with its own length.
SCENES
Pick a slot, load it with PLAY, and store your sound with SAVE held and REC.

What Les checked

FRASIL

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