Unsupervised Source Separation via Self-Supervised Training. Karamatlı, E. & Kırbız, S. arXiv:2202.03875 [cs, eess], February, 2022. arXiv: 2202.03875![Unsupervised Source Separation via Self-Supervised Training [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper abstract bibtex We introduce two novel unsupervised (blind) source separation methods, which involve self-supervised training from single-channel two-source speech mixtures without any access to the ground truth source signals. Our first method employs permutation invariant training (PIT) to separate artificially-generated mixtures of the original mixtures back into the original mixtures, which we named mixture permutation invariant training (MixPIT). We found this challenging objective to be a valid proxy task for learning to separate the underlying sources. We improve upon this first method by creating mixtures of source estimates and employing PIT to separate these new mixtures in a cyclic fashion. We named this second method cyclic mixture permutation invariant training (MixCycle), where cyclic refers to the fact that we use the same model to produce artificial mixtures and to learn from them continuously. We show that MixPIT outperforms a common baseline (MixIT) on our small dataset (SC09Mix), and they have comparable performance on a standard dataset (LibriMix). Strikingly, we also show that MixCycle surpasses the performance of supervised PIT by being data-efficient, thanks to its inherent data augmentation mechanism. To the best of our knowledge, no other purely unsupervised method is able to match or exceed the performance of supervised training.
@article{karamatli_unsupervised_2022,
title = {Unsupervised {Source} {Separation} via {Self}-{Supervised} {Training}},
url = {http://arxiv.org/abs/2202.03875},
abstract = {We introduce two novel unsupervised (blind) source separation methods, which involve self-supervised training from single-channel two-source speech mixtures without any access to the ground truth source signals. Our first method employs permutation invariant training (PIT) to separate artificially-generated mixtures of the original mixtures back into the original mixtures, which we named mixture permutation invariant training (MixPIT). We found this challenging objective to be a valid proxy task for learning to separate the underlying sources. We improve upon this first method by creating mixtures of source estimates and employing PIT to separate these new mixtures in a cyclic fashion. We named this second method cyclic mixture permutation invariant training (MixCycle), where cyclic refers to the fact that we use the same model to produce artificial mixtures and to learn from them continuously. We show that MixPIT outperforms a common baseline (MixIT) on our small dataset (SC09Mix), and they have comparable performance on a standard dataset (LibriMix). Strikingly, we also show that MixCycle surpasses the performance of supervised PIT by being data-efficient, thanks to its inherent data augmentation mechanism. To the best of our knowledge, no other purely unsupervised method is able to match or exceed the performance of supervised training.},
urldate = {2022-03-02},
journal = {arXiv:2202.03875 [cs, eess]},
author = {Karamatlı, Ertuğ and Kırbız, Serap},
month = feb,
year = {2022},
note = {arXiv: 2202.03875},
keywords = {Computer Science - Machine Learning, Computer Science - Sound, Electrical Engineering and Systems Science - Audio and Speech Processing, Electrical Engineering and Systems Science - Signal Processing},
}
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