Descript's ducking feature allows you to automatically lower the volume of other audio layers in your composition whenever a speech clip is present in the script track. You can apply the effect from the Audio Effects section of the Properties Panel.

Descript Editor screenshot showing how to enable ducking from the properties panel

Parameter Description
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

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. In this scenario, Descript will evaluate the volume reduction slider for all enabled layers, and prefer the setting that reduces the volume of other layers the most.

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