code: def testSilence(self):
      audio = essentia.array([[0, 0]] * 44100)
      m, s, i, r = LoudnessEBUR128()(audio)
  
      # Momentary and short-term loudness can have values below absolute threshold of -70. LUFS
      for x in m:
          self.assert_(x <= -70.0)
      for x in s:
          self.assert_(x <= -70.0)
      self.assertEqual(i, -70.0)
      self.assertEqual(r, 0.0)
  
imports: from essentia_test import *
label_desc: Use image node_id 4 for calling the TestLoudnessEBUR128 obj's underlying member method code with example usage: obj.testSilence() without return types