SNOAR: Self-training with Noise filtering, Observation adding, and Remixing for Speech Denoising Without Clean References

Unsupervised speech denoising methods such as MixIT and noisy-target training can be trained directly on noisy recordings, avoiding the sim-to-real gap of synthetic training data, but remain well below supervised performance. Teacher--student self-training, as in RemixIT, narrows this gap by remixin