code: def testZero(self):
      pitch, voicedProbs = PitchYinProbabilistic()(zeros(2048))
      self.assertEqual(pitch, -61.735)
      self.assertEqual(voicedProbs, 0)
  
file_path: essentia/test/src/unittests/tonal/test_pitchyinprobabilistic.py
imports: from essentia_test import *
  from numpy import sin, pi, mean, random
label_desc: Use image node_id 2 for calling the TestPitchYinProbabilistic obj's underlying member method code with example usage: obj.testZero() without return types