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Swap & Layer Audio
Swap or layer new sound effects, Foley, or ambience over existing audio, and keep the replacement in sync with the original edit structure across tracks.
Tools for this workflow

Undertone 2Paid
Audiokids
Undertone 2 is an audio synthesis plugin designed for creating seamless dialogue fills, ambient background textures, and complex soundscapes.
Sound Design & Soundscape Creation

Ambience CutterPaid
Fractaudio
A tool designed for Pro Tools that automates the editing, moving, and fading of background ambience layers.
Audio Utility

SynchronicityPaid
Audiokids
Synchronicity is an AudioSuite plugin for Pro Tools designed to automate the process of replacing or layering audio clips within a session.
Audio Utility