Ducking
Ducking is applied to the mix when the audio channel that ducking is set on rises above a threshold. Ducking is often used for voice-overs or announcement. The background mix is ducked when the announcer starts talking and returns to the previous level when the announcer stops talking. The settings for ducking are the same as for noise gate except that when the ducking channel passes the threshold the mix is ducked down by the reduction amount and the ducking channel is untouched.
When ducking is active for a channel, the Mute button is replaced with Ducking. When the Ducking button is off, the channel is muted and ducking is not applied. When the Ducking button is on, the channel is unmuted and the mix will be ducked when the ducking channel passes the threshold.