Les

FM-1 firmware · 1.1

Arctic Scream

Dark arctic drones and feedback screams: GR!MM's four-track drone machine with a howling feedback voice and 46 cold sounds.

Made by
p0larpatch
Released
October 26, 2026
Built on
GR!MM
Install
On the FM-1 Firmware Hub · source on GitHub
Scan
Not scanned yet What we checked
Last checked
October 31, 2026

What Arctic Scream does

  • Holvut is a feedback source where a string and resonant body howl and sustain themselves once FEEDBACK passes the threshold.
  • Seven sources per track cover analog-style VA, six-operator FM with 32 algorithms, samples, sung vowels, tonewheel organ, physical models and phase distortion.
  • The DRONE page makes a held sound move on its own: BORGA drifts it, STOARBMA raises the storm, GOHCCAT sets how many bars it takes to wake.
  • Four tracks each run a 64-step pattern with chance, ratchets, step locks and hold SEQ key tools for clear, random, shift, copy and mutate.
  • Scales including HORROR, per-track chords and an arpeggiator let one key play whole chords in key.
  • TAPE, GRAIN, DELAY with feedback to 150 percent and three-second times, and SPACE up to infinite colour the whole setup.
  • It saves by itself when silent, with slots A to D, 64 of your own sound slots and 46 arctic factory sounds.

Its modes

HOME
See the tracks and set the selected track's VOLUME, CUTOFF, RESONANCE and FX, with mixer pages for level, sends and pan.
EDIT
Choose the track's sound source and latch, shape its four knobs, and wire the six FM operators on the FM ALGO and FM OP pages.
ENV
Set how each note starts and ends with ATTACK, DECAY, SUSTAIN and RELEASE.
LFO
Add slow free-running movement with RATE, DEPTH, DESTINATION and SHAPE.
DRONE
Let a sound move on its own with BORGA, STOARBMA and GOHCCAT.
SEL
Pick the shared root and scale, then the track's chord type and voicing.
ARP
Set the arpeggiator's MODE, RATE, OCTAVES and GATE.
SEQ
Edit the track's 64-step pattern, step by step, and its length, division, swing and play mode.
SONG
Chain up to sixteen sections of slots A to D with repeats, and record the order you play them.
FX
Dial in the shared TAPE, GRAIN, DELAY and SPACE effects.

What Les checked

Arctic Scream

StatusNot scanned yet

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