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Mission 20 · World 4
Operator
FM synthesis demystified.
FM synthesis. Four operators. Bells, basses, brass — clean and digital.
+80 XP
// WHAT IT DOES
Operator is a 4-operator FM synth. FM = one oscillator modulates another's frequency, creating complex harmonics from simple sine waves.
Drop it, pick a preset, play. Bass and bell sounds are what it does best.
Think of it like → Like four tuning forks that hit each other — the result is a complex chord from simple parts.
▸ WHY YOU CARE
- • FM bass cuts through any mix — clean and tight.
- • Bells and metallic textures come effortlessly.
// SEE & HEAR IT
Round 1 · 0/0 correct · 0%
LOWPASS CUTOFF
Listen for the brightness. High cutoff = open and bright. Low cutoff = dark and muffled.
Your value6.1kHz
200Hz12.0kHz
▸ HOW IT WORKS
Operator A modulates B modulates C → audible operator (carrier). Algorithm dictates the chain.
▸ Signal flow — watch the dot
▸ SIGNAL FLOW
Glowing dot = your signal travelling through Live.
▸ LISTEN FOR
- • Ratio changes shift timbre, not pitch.
▸ WALKTHROUGH (3 steps)
- 1. DO: Load Operator → Bass preset.▸ LISTEN: Tight FM bass.
- 2. DO: Increase B's level.▸ LISTEN: Tone gets more harmonic / metallic.
- 3. DO: Tweak B's coarse ratio.▸ LISTEN: Timbre changes dramatically — not pitch.
▸ COMMON MISTAKES
- ✗ Tuning operators by ear instead of by ratio — get inharmonic results unintentionally.
- ✗ Pushing Feedback too high → noise.
// QUIZ (QUICK)
Question 1 / 30 correct
Operator has how many operators?