PA3 Derailer

PA3 Derailer

Build new instruments

Derailer is a physical modelling system with two basic elements. One is a metal bar that you can strike or bow. The other is a nonlinear spring connection. This allows you to join two bars together so that vibrations from one create sympathetic resonance in the other. By connecting multiple bars you can create new instruments that have their own unique sound.

There are 37 strike bars, 5 resonators, and up to 81 connections to play with. The adjustable physical parameters and nonlinearity of the connections produce a wide range of tonal variation that reacts to striking velocity or bowing pressure. Derailer uses finite-difference time-domain numerical modelling.



Example Presets

Keys




Bowing




Percussion




Demo tracks by Makunouchi Bento




(All sounds from Derailer)

Derailer + ROLI Seaboard

Bowing



Multi-strike percussion



Free to use in Demo mode

PA3 is free to use in Demo mode. The output is cut for several seconds each minute, and saving presets is disabled.

System requirements: macOS 10.9 ~ 10.13
2011 or newer Mac (late 2013 for the Mac Pro*)


Download v1.1.7 (1.5MB)


*A special build for the old Mac Pro tower is available here .

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In-depth Tutorial