Dynamics Plug-Ins : Dynamics III : Expander/Gate III : Expander/Gate III Attack Control

Expander/Gate III Attack Control
The Attack control sets the attack time, or the rate at which gain is reduced after the input signal crosses the threshold. Use this along with the Ratio setting to control how soft the Expander’s gain reduction curve is.
This control ranges from 10 μs (fastest attack time) to 300 ms (slowest attack time).