class_docstr: BiLSTM with same hidden units as input dim.
      
class_docstr_tok: ["BiLSTM","with","same","hidden","units","as","input","dim","."]
code: def forward(self, x):
      x = x.permute(2, 0, 1)
      x = self.lstm(x)[0]
      x = self.linear(x)
      x = x.permute(1, 2, 0)
      return x
  
imports: from dataclasses import dataclass
  import typing
  import torch
  from torch import nn
  from torch.nn import functional
  from audiocraft.modules.transformer import StreamingTransformer, create_sin_embedding
label_desc: Use image node_id 2 for calling the BLSTM obj's underlying member method code with example usage: obj.forward(x) and returns: x