Operator

• Special Form of Oscillator used in FM - short Form: OP
• also the FM 4 OP Synth of Ableton Live

-Note, that Operators aren't just the Oscillator. It's the whole thing including the Envelopes what they called an Operator. But since the OSC Settings are referred as "the Operator" they are almost associated with oscillators

deutsch

• Begriff für Oszillator in der FM, abgekürzt OP
• Operator ist auch der Name eines Software-FM-Synths von Ableton,

-> Ableton Live