Author

Simon Dixon

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#machine learning Preprint Sep 2026

Synthesis and editing of multi-instrument audio mixtures using scalar-quantised latents with MIDI Span conditioning

SpanSynth-Edit is introduced, a flow-matching model for MIDI-guided synthesis and editing of multi-instrument audio mixtures using low-frame-rate scalar-quantised latents using low-frame-rate scalar-quantised latents.

Sungkyun Chang, K. Bhandari, Simon Dixon et al. · 0 citations

Preprint Aug 2026

SPHERE: Automatic Music Upmixing via Audio Language Model Post-Training with Spatial Heuristic Rewards

In this paper, we study the task of automatic music upmixing, wherein a system predicts spatial mixing parameters from a multi-stem recording. Different from existing methods that rely on task-specific music encoders, we approach this task via audio language model (ALM) post-training, leveraging rich representations fr...

Zi-Xun Guo, Calvin Murdock, Sanjeel Parekh et al. · 0 citations