code: def __init__(self, mel_dim):
      super().__init__()
      self.cbhg = CBHG(
          mel_dim,
          K=8,
          conv_bank_features=128,
          conv_projections=[256, mel_dim],
          highway_features=128,
          gru_features=128,
          num_highways=4,
      )
  
imports: import torch
  from torch import nn
  from .attentions import init_attn
  from .common_layers import Prenet
label_desc: Use image node_id 1 to create a new PostCBHG object from inherited base classes: nn with example: obj = PostCBHG(mel_dim)