What is FM Synthesis?

FM Synthesis (Frequency Modulation Synthesis) is a sound synthesis technique in which one waveform modulates the frequency of another to create complex tones. It is known for producing bright, metallic, and harmonically rich sounds.

The process typically involves a carrier signal (the sound you hear) and one or more modulator signals that alter the carrier’s frequency at audio rates.

FM Synthesis emphasizes harmonic complexity, as changes in modulation amount and frequency ratios can generate a wide range of timbres, from simple tones to highly intricate textures.

It can produce both harmonic and inharmonic sounds, making it useful for creating bell-like tones, electric pianos, basses, and experimental textures.

Today, FM Synthesis is widely used in electronic music and sound design, valued for its efficiency and its ability to create diverse and expressive sounds.