text: import librosa
  
  
  def transform_pesq_range(pesq_score):
      """
      transform PESQ metric range from [-0.5 ~ 4.5] to [0 ~ 1]
      """
      return (pesq_score + 0.5) / 5
  
  
  def load_wav(path, sr=16000):
      return librosa.load(path, sr=sr)[0]