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
Les hasn't scanned this firmware yet.
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