Triggering a Compressor with Side-Chain Signals
Compression, expansion, or gating can be triggered by side-chain signals exceeding a specified threshold. This allows you to lower the volume of one audio signal every time another audio signal sets in.
Prerequisite
You have set up a project with a bass guitar and a bass drum track, and you want to lower the bass guitar volume each time the bass drum hits.
Procedure
Result
The bass drum signal triggers the Compressor on the bass guitar track. When you now play back the project, the bass guitar will be compressed whenever the signals on the bass drum track exceed the set threshold.