How Ducking works
Ducking works by checking for the presence of a clip on the layer that it has been enabled on. If a clip exists, the volume of all other layers will be reduced by the amount specified. If a gap clip is present on the layer, ducking will be disabled and the volume of other layers will increase to their defined volume levels.
Please note that ducking is always applied to the entire layer, and cannot be applied to specific clips only.
Adjusting volume reduction
To change the amount of reduction on your other audio layers, click the Effect Settings button to the right of the toggle switch, then click to modify the Amount percentage.
|Other audio layers will be reduced to this percentage level, except when a gap clip is playing on the audio layer
Enabling ducking on multiple layers
Ducking can also be applied to multiple layers simultaneously if you'd like to maintain your current volume level across several layers. This is great for example if you've mixed in other background layers (like sound effects) that you really want to pop out over your speaker.
Whenever this feature is enabled for more than one layer in the composition, those other layers are also excluded from the volume reduction and will remain at full volume.
Working with different reduction settings
In the event you've enabled ducking on multiple layers, and those layers have different Amount (reduction) settings, Descript will prefer the setting that reduces the volume of other layers the most.
Ducking is not currently supported with layers in the Sequence Editor.