code: def audio_batch_padded():
      """
      Create audio fixtures of shape (batch_size=2,) with elements of variable length.
      """
      sample_rate = 16000
      frequency_length = (sample_rate // 2 + 1) // 240 * 3
      test_input = np.zeros((2, sample_rate))
      test_mask_frequency = np.ones((2, frequency_length, 80))
      return test_input, test_mask_frequency
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import numpy
  import pytest
label_desc: Use image node_id 2 for calling a global function with example usage: audio_batch_padded() and returns: test_input,  test_mask_frequency