In the field of intelligent audio production, neural networks have been trained to automatically mix a multitrack to a stereo mixdown. Although these algorithms contain latent models of mix engineering, there is still a lack of approaches that explicitly model the decisions a mix engineer makes while mixing. In this work, a method to retrieve the parameters used to create a multitrack mix using only raw tracks and the stereo mixdown is presented. This method is able to model a multitrack mix using gain, panning, equalization, dynamic range compression, distortion, delay, and reverb with the aid of greybox differentiable digital signal processing modules. This method allows for a fully interpretable representation of the mixing signal chain by explicitly modeling the audio effects one may expect in a typical engineer`s mixing chain. The modeling capacities of several different mixing chains are measured using both objective and subjective measures on a dataset of student mixes. Results show that the full signal chain performs best on objective measures and that there is no statistically significant difference between the participants` perception of the full mixing chain and reference mixes.
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https://aes2.org/publications/elibrary-page/?id=22234
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