mikisayaka 

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也许,或者说 点击箭头指示的位置进行训练的模型可能会出现这个问题。在我的情况下,点击“是”并进行训练的模型似乎没有发生这个问题。  (模型是否带音高指导(唱歌一定要,语音可以不要)) ![1](https://user-images.githubusercontent.com/121276038/233548231-ff04993a-b0fa-436b-b9f7-2346e8497677.png)

There might have been too many files with low volume. I'm trying to resolve it now.

I'll give that a try as well. Thank you for the advice. After normalizing the volume, the progress of the epochs became slow, and the results improved somewhat.    I might...