: These plugins typically convert audio amplitude into keyframes.

: Advanced versions allow you to target specific frequencies, such as just the bass or snare drums, to drive different animations.

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5 MUST HAVE Plugins for After Effects Animation (Free or Cheap)

While "SoundReactAddon" specifically may be a less common name for a niche script, it belongs to a category of After Effects tools like , FreqReact , or Red Giant Sound Keys . These tools automate the process of making visual elements—such as scale, position, or effects—react to the beat of a music track.