What does the output stand for?

[ZhouXiaoyu11]

The shape of the output is [1, 5, 257], 1 for the batch, 257 for the frequency. Could you please tell me what 5 means? Thank you so much.

[YangangCao]

@ZhouXiaoyu11 sorry, I have no idea about output and loss function, you can read paper or contact the author. But I am pretty sure my network is right.