Pith. sign in

REVIEW 3 cited by

A2SB: Audio-to-Audio Schrodinger Bridges

Not yet reviewed by Pith; the record is open.

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2501.11311 v2 pith:5P2XZYPN submitted 2025-01-20 cs.SD cs.LGeess.AS

A2SB: Audio-to-Audio Schrodinger Bridges

classification cs.SD cs.LGeess.AS
keywords a2sbaudiomusicaudio-to-audiobridgescapableextensioninpainting
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
0 comments
Share X Bluesky LinkedIn Reddit HN
read the original abstract

Real-world audio is often degraded by numerous factors. This work presents an audio restoration model tailored for high-res music at 44.1kHz. Our model, Audio-to-Audio Schr\"odinger Bridges (A2SB), is capable of both bandwidth extension (predicting high-frequency components) and inpainting (re-generating missing segments). Critically, A2SB is end-to-end requiring no vocoder to predict waveform outputs, able to restore hour-long audio inputs, and trained on permissively licensed music data. A2SB is capable of achieving state-of-the-art band-width extension and inpainting quality on several out-of-distribution music test sets.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. On the Geometry of Music Bandwidth Extension in Latent Spaces of Audio Codecs

    cs.SD 2026-08 conditional novelty 6.0

    A single mean shift in the latent space of several neural codecs achieves competitive music bandwidth extension on some metrics, implying a largely linear structure.

  2. AnyBand: Unified Multi-Bandwidth Speech Extension via Frequency-Aware In-Context Spectral Infilling

    cs.SD 2026-08 conditional novelty 6.0

    A single flow-matching model performs speech bandwidth extension across continuously varying cutoff frequencies by treating the observed low-band spectrum as an in-context prompt and infilling the masked high band.

  3. Schr\"odinger Bridge Mamba for One-Step Speech Enhancement

    cs.SD 2025-10 conditional novelty 5.0

    A Mamba-based speech enhancer trained with Schrödinger Bridge objectives produces strong denoising and dereverberation in one inference step with a low real-time factor.