code: def audio_sample():
      """
      Create audio sample.
      """
      sample_rate = 16000
      test_input = np.ones((sample_rate)) * 10e3
      return test_input
  
file_path: adversarial-robustness-toolbox/tests/attacks/evasion/conftest.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import numpy
  import pytest
  from art.estimators.pytorch import PyTorchEstimator
  from art.estimators.speech_recognition.speech_recognizer import SpeechRecognizerMixin
  from art.estimators.tensorflow import TensorFlowV2Estimator
  from tests.utils import ARTTestFixtureNotImplemented
label_desc: Use image node_id 1 for calling a global function with example usage: audio_sample() and returns: test_input