code: def squim_objective_base() -> SquimObjective:
      """Build :class:`torchaudio.prototype.models.SquimObjective` model with default arguments."""
      return squim_objective_model(
          feat_dim=256,
          win_len=64,
          d_model=256,
          nhead=4,
          hidden_dim=256,
          num_blocks=2,
          rnn_type="LSTM",
          chunk_size=71,
      )
  
imports: import math
  from typing import List, Optional, Tuple
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 4 for calling a global function with example usage: squim_objective_base() and returns: squim_objective_model