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ambisonics 1change point detection 1diffusion models 1kalman filter 1machine learning 1neural networks 1online adaptation 1spatial audio 1state estimation 1upscaling 1

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20242026
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eess.AS2026

DiffAU: Diffusion-Based Ambisonics Upscaling

Amit Milstein, Nir Shlezinger, Boaz Rafaely

The paper introduces DiffAU, a diffusion‑model‑based method that upscales first‑order Ambisonics recordings to third‑order Ambisonics, improving spatial resolution of 3D audio.