Sidechain Compression
Definition
The application of sidechain technique specifically to compression — using an external signal to trigger and control the compression of another signal. One of the most fundamental tools in modern music production for creating space between competing elements.
In Simple Terms
Using one sound to trigger compression on another. The classic: kick drum triggers compression on the bass, so every time the kick hits, the bass dips for a split second. In electronic music, this creates the characteristic pumping effect.
In Practice
In electronic music, the kick drum sidechains the bass synthesizer compressor, causing the bass to duck rhythmically on every kick hit and creating the pumping effect characteristic of dance music production.
Common Confusion
The "pumping" sidechain effect is associated with EDM, but the technique was originally developed for broadcast — radio engineers use sidechain compression on music beds so dialogue cuts through cleanly. Same tool, two completely different aesthetic intents. Hearing the pump is a creative choice in EDM and a failure in broadcast.
Sources & Verification
- Owsinski, B. — The Mixing Engineer's Handbook (4th ed., sidechain compression chapter)Bobby Owsinski Media Group, 2017
- Izhaki, R. — Mixing Audio (3rd ed.)Focal Press, 2017
Last verified: 2026-05-05