code: def create_folder(folder):
      """Creates a new folder (where to store enhanced wavs)"""
      if not os.path.isdir(folder):
          os.makedirs(folder)
  
imports: import os
  import sys
  import torch
  import torchaudio
  import speechbrain
  from pesq import pesq
  from hyperpyyaml import load_hyperpyyaml
  from speechbrain.utils.metric_stats import MetricStats
  from speechbrain.nnet.loss.stoi_loss import stoi_loss
  from speechbrain.utils.distributed import run_on_main
label_desc: Use image node_id 3 for calling a global function with example usage: create_folder(folder) without return types