Operator

Synthesizer
Ableton

Operator is an advanced FM synthesizer that combines frequency modulation with subtractive and additive synthesis using four multi-waveform oscillators. Each oscillator can modulate others to create complex timbres, supported by a filter section, LFO, and comprehensive envelope controls. It excels at both classic FM sounds and experimental textures through its eleven predefined algorithms and extensive modulation routing.

Key Features

  • Four multi-waveform oscillators with FM modulation capabilities
  • Eleven predefined algorithms for oscillator routing and connections
  • Built-in waveforms: sine, sawtooth, square, triangle, noise, plus digital variants (Sine 4/8-bit, Saw D, Square D)
  • User waveform editor with harmonic drawing (16, 32, or 64 harmonics)
  • Five filter types: low-pass, high-pass, band-pass, notch, and Morph filter
  • Five analog-modeled circuit behaviors (Clean, OSR, MS2, SMP, PRD)
  • LFO with seven waveform options including sample-and-hold and noise
  • Seven envelopes with looping, beat, sync, and trigger modes
  • Up to 32 voices of polyphony with legato monophonic mode
  • Polyphonic glide and stereo spread (chorus) functionality
Official Website

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