code: def test_valid_audio_strided():
      """valid_audio: strided"""
      y = np.zeros(1000)[::2]
      librosa.util.valid_audio(y)
  
imports: import os
  import numpy
  import librosa
  import pytest
label_desc: Use image node_id 10 for calling a global function with example usage: test_valid_audio_strided() without return types