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Many-Speakers Single Channel Speech Separation with Optimal Permutation Training

2021-04-18 20:56:12
Shaked Dovrat, Eliya Nachmani, Lior Wolf
arXiv_AI
   
Abstract

Single channel speech separation has experienced great progress in the last few years. However, training neural speech separation for a large number of speakers (e.g., more than 10 speakers) is out of reach for the current methods, which rely on the Permutation Invariant Loss (PIT). In this work, we present a permutation invariant training that employs the Hungarian algorithm in order to train with an $O(C^3)$ time complexity, where $C$ is the number of speakers, in comparison to $O(C!)$ of PIT based methods. Furthermore, we present a modified architecture that can handle the increased number of speakers. Our approach separates up to $20$ speakers and improves the previous results for large $C$ by a wide margin.

Abstract (translated)

URL

https://arxiv.org/abs/2104.08955

PDF

https://arxiv.org/pdf/2104.08955.pdf

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