The faustgen2~ object is a Faust external for Pd a.k.a. Pure Data, Miller Puckette's interactive multimedia programming environment. Yann Orlarey's Faust is a functional programming language developed by Grame, which is tailored for real-time signal processing and synthesis.

faustgen2~ is based on Pierre Guillot's faustgen~ which in turn was inspired by Grame's faustgen~ object for Max/MSP. Like faustgen~, faustgen2~ uses Faust's LLVM-based just-in-time (JIT) compiler to load, compile and play Faust programs on the fly. faustgen2~ is an extensive update which offers plenty of new functionality such as MIDI, polyphony, Scala tunings, OSC, and Pd GUI support, as well as a Pd loader extension for Faust.

This project publishes packages for Fedora, Debian and Ubuntu. Arch packages are available in the AUR, see https://aur.archlinux.org/packages/?K=pd-faustgen2. Mac and Windows packages are available for download at the GitHub project page.

Two packages are available which only differ in the installation path. pd-faustgen2 is for vanilla Pd (http://msp.ucsd.edu/software.html), whereas purrdata-faustgen2 is for Purr Data, Jonathan Wilkes' Pd variant (https://github.com/agraef/purr-data).