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rrc2software Blog Proyectos
rrc2software Blog Proyectos

Physicles - Physics-based AU MIDI plugins

A collection of physics-based AU MIDI plugins* for the iPad and the iPhone

*Only one now, at least one more later 馃槈

Download on the AppStore


MIDI messages are created by balls bouncing inside a polygon


Download Physicles manual


Physicles is a container of MIDI Audio Unit plugins, which generate MIDI messages based on the physical interactions between entities using an underlying physics engine. Physicles plugins (at present, only one plugin exists: Bouncy) do not generate any sound: they simply generate MIDI messages. All compatible AU Hosts (such as AUM, AudioBus 3, apeMatrix, Beatmaker, Cubasis 2, and Sequencism) have various mechanisms to connect the MIDI output of these plugins to other audio units, synthesizers, or external hardware. Once connected, the receiver instrument will play the generated physics-based sequences of notes.


Current AU MIDI Plugins

  1. Bouncy: In this playground, multiple balls bounce inside a polygon, and MIDI messages are generated whenever a ball collides with the side of the polygon.

Planned AU MIDI Plugins

  • Sandbox: In this playground, balls will be launched inside a sandbox of MIDI-generating entities.


MIDI Audio Unit plugins were possible thanks to pioneers such as Bram Bos (Rozeta), Jonatan Liljedahl (Kimatica 鈥 AUM), Mathieu Garcia (INTUA 鈥 Beatmaker), and Fred Anton Corvest (FAC). This app was inspired by these pioneers and other pioneer physics-based music apps in the iOS ecosystem such as Caelestis and PHYSynth, and also was made possible by the help of multiple libraries (like the underlying physics engine, chipmunk, which rocks!), developers (like Gene De Lisa) and beta testers.

Hopefully this small experiment that pursued the replication of some sounds of the past in an AU ecosystem grew into something that will be useful for your own music.

Best, Rodrigo Roman Castro

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脷ltima modificaci贸n: Feb 14, 2021

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