code: def testSilence(self):
      self.assertEquals(PitchSalience()([0] * 1024), 0)
  
file_path: essentia/test/src/unittests/sfx/test_pitchsalience.py
imports: from essentia_test import *
  from numpy import sin, pi, mean, var
  from numpy.random import uniform
label_desc: Use image node_id 9 for calling the TestPitchSalience obj's underlying member method code with example usage: obj.testSilence() without return types