What does it mean?
Intermodulation differs from the harmonics of a single sine. Distorted chords can sound rougher because of sum and difference components.
ExampleTest two or three notes together, not only one note, when assessing lead drive.
Audio glossary
Additional components produced when multiple frequencies enter a nonlinear stage together.
Intermodulation differs from the harmonics of a single sine. Distorted chords can sound rougher because of sum and difference components.