code: def get_random_factor(self, low=None, high=None, dtype="float"):
      lower_bound = low if low else self.factor[0]
      upper_bound = high if high else self.factor[1]
      if dtype == "int":
          return np.random.randint(lower_bound, upper_bound)
      elif dtype == "float":
          return np.random.uniform(lower_bound, upper_bound)
  
      return np.random.uniform(lower_bound, upper_bound)
  
file_path: nlpaug/nlpaug/augmenter/audio/audio_augmenter.py
imports: import numpy
  from nlpaug.util import Method
  from nlpaug import Augmenter
label_desc: Use image node_id 4 for calling the AudioAugmenter obj's underlying member method code with example usage: obj.get_random_factor(low, high, dtype) and returns: np, np, np