code: def create_wav_files():
      for i in range(len(names)):
          scipy.io.wavfile.write(names[i], rates[i], ref_i[i])
  
imports: from nvidia.dali import Pipeline, pipeline_def
  from nvidia.dali import fn
  import nvidia.dali.types
  import scipy.io.wavfile
  import numpy
  import json
  import tempfile
  import os
  from test_audio_decoder_utils import generate_waveforms
  from test_utils import compare_pipelines
label_desc: Use image node_id 3 for calling a global function with example usage: create_wav_files() without return types