MOPE-1

The blob

• The blob is the sound. Its body is the wavetable, its eyes the filter, its mouth the envelope, its tears the delay, the room around it the reverb.
• Press a part's button: its drawer opens under the blob and the four knobs turn that part. The drawer hides after 3 s, the page stays (its button lit). Press twice: the drawer stays until HOME.
• Some parts have a second page: press the button again (not twice fast). The caption says so (AGAIN: SHADOW.).
• HOME body, again shadow (a second oscillator) · EDIT eyes (the filter, its kind and drive) · ENV mouth, again sigh (a second envelope that sweeps the wavetable) · LFO vibe, again tremble (a second LFO) · FX tears · SEL walls · GLO mixer, again setup · ARP held: the arpeggiator · SEQ the loop, again the tape deck.

Playing

• 27 keys, F3 to G5. OCT− / OCT+ shift them and light up while they're shifted.
• PRESETS a whole sound (38 of them), ALGORITHM only the wavetable (16 of them), SELECT the drum tape.
• PLAY the band: thirteen depressing beats, a minor-key bass, your loop. ARP tapped: chords become patterns.
• REC records into a 1, 2 or 4-bar loop (a bar's count-in when stopped). SEQ: the white keys are its steps; press one and turn NOTE, LEN, VEL; tap it to remove it. HOME + REC undo, SAVE + REC clear.

Here

• Drag a knob up or down, or scroll on it. Several fingers work on a touch screen. Shift-click or right-click a button to keep it held.
• White keys Q–I and A–K, black keys 1–0 -. Space play, Enter rec, B arp, Esc home, Z X octave, ↑ ↓ wavetable, ← → drum tape.
• MIDI in: notes, bend, the mod wheel (the wavetable's position), program change (a preset), CC 74 cutoff, 71 resonance, 73 attack, 72 release, 91 reverb, 93 chorus, 94 delay, 7 volume.

What this is

MOPE-1 by slothpallas: the FM-1 firmware's screen and sound, compiled to WebAssembly and running at the FM-1's 44.1 kHz. It sits on the open FM-1 platform of Felucca. Free software (GPL-3.0): the source.