FM synthesis is a digital sound generation method that modulates the frequency of one waveform with another to produce harmonically complex, often sharp timbres. In studio production, it is typically sequenced via MIDI to deliver crystalline, metallic tones or layered over acoustic and sampled sounds to bulk up instrument textures.
The Knife relies heavily on FM synthesis across We share our mothers health to give the arrangement a cold, metallic, biting texture. In Delilah, Queen layers FM and PCM synths with quantized drums behind Freddie Mercury's vocals, while Mariah Carey & Boyz II Men's One Sweet Day layers FM synthesis with acoustic piano and sample modules via a Synclavier and MIDI sequencing.
Generate complex harmonic sidebands by modulating one oscillator's frequency with another to create sharp, metallic, or crystalline textures. Use this technique when you need bright digital electric pianos, crisp mallets, or cutting basslines.
| Plug-in | Control | Value | Listen for |
|---|---|---|---|
| Retro Synth | FM (Amount) | 0.45 | crisp, glassy sidebands appearing over the pure sine wave |
| Retro Synth | Harmonic/Inharmonic | 0.20 | defined, musical overtones without unpitched clashing |
| Retro Synth | Mix | 0.50 | an even balance between the fundamental carrier and complex modulator |