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BLINC: Blind Calibration For Training-Free Speech Enhancement Adaptation

2026-09-18 15:26:30
Tobias Raichle, Ekaterina Gavrilko, Bin Yang
arXiv_SD
               
Abstract

Speech enhancement (SE) models degrade under domain shifts and have to adapt to unseen target domains during deployment. Most existing test-time adaptation (TTA) methods for SE do so by adapting a subset of the model weights using a self-supervised loss, which requires backpropagation at test-time and permanently alters the model. We instead recalibrate the prediction itself and propose BLINC, a training-free TTA method that remaps the predicted time-frequency mask onto a bimodal target distribution by histogram matching. At test-time, the target distribution is parameterized from blind features of the noisy recording, so neither a reference distribution from a classical algorithm nor online metric optimization is involved. BLINC improves the overall quality of both evaluated SE models on almost every target condition and matches or exceeds the loss-based TTA baselines at minimal overhead.

Abstract (translated)

URL

https://arxiv.org/abs/2609.21898

PDF

https://arxiv.org/pdf/2609.21898.pdf

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