What is Ring Modulation?

Ring Modulation is a sound synthesis technique in which two audio signals are multiplied together to create a new signal containing the sum and difference of their frequencies. It is known for producing metallic, bell-like, and often inharmonic sounds.

The process typically involves a carrier signal and a modulator signal, where the modulator alters the amplitude of the carrier at audio rates. This interaction removes the original frequencies and replaces them with new sidebands based on the mathematical combination of both signals.

Ring Modulation emphasizes harmonic complexity and unpredictability, often generating tones that do not follow traditional harmonic relationships, which gives it a distinctive, sometimes dissonant character.

It is commonly used in electronic music, film sound design, and experimental audio to create robotic voices, metallic textures, and otherworldly effects.

Today, Ring Modulation is a widely used synthesis technique, valued for its ability to produce unique, complex, and unconventional sounds that stand out in a mix.