code: def manipulate(self, data, start_pos, end_pos, loudness_level):
      aug_data = data.copy()
      aug_data[start_pos:end_pos] = (
          aug_data[start_pos:end_pos] * loudness_level
      )
  
      return aug_data
  
imports: import numpy
  from nlpaug.model.audio import Audio
label_desc: Use image node_id 1 for calling the Loudness obj's underlying member method code with example usage: obj.manipulate(data, start_pos, end_pos, loudness_level) and returns: aug_data