code: def testRealCase(self):
      # The expected values were recomputed from commit
      # a97a01a11509802665d8211f679637dd60d85f3e
      from numpy import mean
  
      filename = join(testdata.audio_dir, "recorded", "musicbox.wav")
      audio = MonoLoader(filename=filename, sampleRate=44100)()
      frameGenerator = FrameGenerator(
          audio, frameSize=1025, hopSize=512
      )
      window = Windowing(type="blackmanharris62")
      pool = Pool()
      mfccAlgo = self.InitMFCC(13)
  
      for frame in frameGenerator:
          bands, mfcc = mfccAlgo(window(frame))
          pool.add("bands", bands)
          pool.add("mfcc", mfcc)
  
      expected = [
          -925.62939453,
          65.30918121,
          -47.7603302,
          29.60293007,
          -20.25293922,
          14.30178356,
          -10.4140501,
          7.66825676,
          -5.91072369,
          4.87522268,
          -3.87032604,
          3.17340517,
          -2.13934493,
      ]
  
      self.assertAlmostEqualVector(
          mean(pool["mfcc"], 0), expected, 1.0e-8
      )
  
file_path: essentia/test/src/unittests/spectral/test_mfcc.py
imports: from essentia_test import *
  from math import *
  import numpy
label_desc: Use image node_id 11 for calling the TestMFCC obj's underlying member method code with example usage: obj.testRealCase() without return types