: Instead of frequency, this plugin uses sound intensity (loudness) to control panning. It allows sounds to react to their own peaks—for instance, making a snare hit jump across the stereo field only when it strikes, without any manual automation routing.

Originally designed for high-end film post-production (used in projects like Dune and Stranger Things ), these plugins are now widely adopted for music production to add "motion" to static mixes. They are particularly valued by engineers for their "randomize" features, which generate unpredictable but musically useful panning patterns with a single click. Overview - Sound Particles

: This plugin uses frequency analysis to drive movement. It can be set so that high-pitched notes orbit the listener while lower frequencies remain centered, creating a dynamic stereo or immersive field based purely on the "brightness" of the sound.