Real-Time Virtual Analog Modelling of an Audio Compressor Using Recurrent Neural Networks

This is the code base for the Honours thesis project submitted to the University of Queensland by Michael Holmes 2022.

Acknowledgements

The following papers were highly influential in guiding this project:

• Efficient neural networks for real-time modeling of analog dynamic range compression by Christian Steinmetz and Joshua Reiss.
• Real-time black-box modelling with recurrent neural networks by Alec Wright, Eero-Pekka Damskägg, and Vesa Välimäki

Introduction

This repo can be used to train RNN, LSTM and GRU neural networks and convert these networks into efficient C++ code for use in audio plugins.

The trained models from the thesis project can be downloaded here.

A demo audio plugin was also created using iPlug2 and can be downloaded here.

Contents

This repo is split into 2 modules: Training and Plugin. Detailed usage instructions are available inside each module.

Training

Code for training and testing the PyTorch models. A script is supplied for converting these models into C++ headers to use with the Plugin module.

Plugin

The iPlug2 project file is supplied along with quick C++ implementations that can be used in other projects.