Dynamics Plug-Ins : Dynamics III : Expander/Gate III : Expander/Gate III Side-Chain Section

Expander/Gate III Side-Chain Section
The side-chain is the split-off signal used by the plug-in’s detector to trigger dynamics processing. The Side-Chain section lets you toggle the side-chain between the internal input signal or an external key input, and tailor the equalization of the side-chain signal so that the triggering of dynamics processing becomes frequency-sensitive. See Dynamics III Side-Chain Input.