OTAD replaces FAD's frozen embedding cost and Gaussian coupling with a learned Riemannian adapter and Sinkhorn OT, reporting higher MOS Spearman correlation on DCASE 2023 and per-sample diagnostics with AUROC at least 0.86.
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Optimal Transport Audio Distance with Learned Riemannian Ground Metrics
OTAD replaces FAD's frozen embedding cost and Gaussian coupling with a learned Riemannian adapter and Sinkhorn OT, reporting higher MOS Spearman correlation on DCASE 2023 and per-sample diagnostics with AUROC at least 0.86.