A Faust architecture for the ESP32 microcontroller

This paper introduces faust2esp32, a tool to generate digital signal processing engines for the ESP32 microcontroller family. It can target both the C++ and the Arduino ESP32 programming environment and it supports a wide range of audio codecs, making it compatible with most ESP32-based prototyping boards. After demonstrating how to use faust2esp32 and providing technical details about its implementation, we evaluate its performances and we present the FAUST Gramophone which is a programmable instrument taking advantage of this technology. Finally, future plans around embedded systems for real-time audio processing and FAUST are presented.