Before revision:  In this paper, we utilize self-supervised pre-training to stabilize the label permutations. Among several types of self-supervised tasks, speech enhancement based pre-training tasks show significant effectiveness in our experiments.
After revision:  In this paper, we utilize self-supervised pre-training to stabilize the label assignment in training the speech separation model. Experiments over several types of self-supervised tasks, speech enhancement based pre-training tasks show significant effectiveness in our experiments.