code: def create_test_files():
      for i in range(len(names)):
          wave = generate_waveforms(lengths[i], freqs[i])
          wave = (wave * 32767).round().astype(np.int16)
          scipy.io.wavfile.write(names[i], rates[i], wave)
  
imports: from nvidia.dali import Pipeline, pipeline_def
  import nvidia.dali.fn
  import nvidia.dali.ops
  import nvidia.dali.types
  import scipy.io.wavfile
  import numpy
  import os
  from test_audio_decoder_utils import generate_waveforms, rosa_resample
  from test_utils import compare_pipelines, get_files
label_desc: Use image node_id 1 for calling a global function with example usage: create_test_files() without return types