by Daniel Gonz
Gates are wonderful processors that can clean up background noise and bleed in your audio tracks. They’re a bit tricky to understand because the key to successfully using one is often a specific feature that’s hidden or buried in the interface. The feature I’m referring to is called the sidechain. It’s a powerful element of my mixing workflow and I’d like to show you why.
To follow along with this post, you can download the audio examples here.
In its simplest form, a gate allows a signal to pass through it only when its decibel level is above a set threshold. This means the gate is ‘open’. If the signal falls below the threshold then no signal is allowed to pass. This means the gate is ‘closed’. The sidechain becomes an integral part of this entire process because it’s what the gate uses to detect whether or not the signal is above or below the set threshold.