Rerun self-randomizing audio repeater

FORMAT: Audio Unit plugin for macOS 10.6.8+

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Rerun is a self-randomizing audio repeater. It continuously samples a small slice of incoming audio, repeats it a number of times, and then starts over. Each time this sampling-repetition process restarts, the slice size and the number of repeats are randomized. The effect can run either linked or independently between left and right channels, and also has a variable probability of affecting the input signal. Altogether, these features make Rerun an easy-to-operate, highly useful experimental tool that turns anything into a chaotic rhythm or a grainy, time-stretched texture.



  • Two audio samplers-repeaters with optional stereo link.
  • Continuously randomized parameters: slice size, number of repeats, engagement probability.
  • Fine-tuned gate envelopes for smooth, click-free operation.


  • Color-coded graphics with subtle animations.
  • Fully hardware-accelerated rendering with support for retina screen resolution.


  • Works with any application that supports Audio Unit effect plugins.
  • Requires OS X 10.6 or later running on 32 or 64 bit Intel Macs.
Update 1.0.1
– Changed plugin name due to naming collision with another company’s product
– Repeater buffer is now being cleared when host playback or rendering begins
– Slice envelope attack/release times no longer depend on the sample rate
– Added new factory presets
Two Rerun presets on a slow electric guitar riff
Rerun processing an electro drum break, with medium probability
Rerun processing a polyphonic synthesizer sound, with automated size and repeats, and gradual increase of probability
Rerun working on a synth pad sound
Rerun processing two female and male vocal phrases