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SEARCHING FOR MUSIC MIXING GRAPHS: A PRUNING APPROACH

Sungho Lee*

Marco A. Martínez-Ramírez

Wei-Hsiang Liao

Stefan Uhlich*

Giorgio Fabbro*

Kyogu Lee*

Yuki Mitsufuji

* External authors

DAFx-24

2024

Abstract

Music mixing is compositional -- experts combine multiple audio processors to achieve a cohesive mix from dry source tracks. We propose a method to reverse engineer this process from the input and output audio. First, we create a mixing console that applies all available processors to every chain. Then, after the initial console parameter optimization, we alternate between removing redundant processors and fine-tuning. We achieve this through differentiable implementation of both processors and pruning. Consequently, we find a sparse mixing graph that achieves nearly identical matching quality of the full mixing console. We apply this procedure to dry-mix pairs from various datasets and collect graphs that also can be used to train neural networks for music mixing applications.

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