code: def testBitrate(self):
      from math import fabs
  
      dir = join(testdata.audio_dir, "recorded")
      audio16, sr16, ch16, md516, _, _ = AudioLoader(
          filename=join(dir, "cat_purrrr.wav")
      )()
      audio24, sr24, ch24, md524, _, _ = AudioLoader(
          filename=join(dir, "cat_purrrr24bit.wav")
      )()
      audio32, sr32, ch32, md532, _, _ = AudioLoader(
          filename=join(dir, "cat_purrrr32bit.wav")
      )()
      audio16L, audio16R = essentia.standard.StereoDemuxer()(audio16)
      audio24L, audio24R = essentia.standard.StereoDemuxer()(audio24)
      audio32L, audio32R = essentia.standard.StereoDemuxer()(audio32)
  
      error24 = 0
      for i, j in zip(audio16L, audio24L):
          error24 += fabs(fabs(i) - fabs(j))
      for i, j in zip(audio16R, audio24R):
          error24 += fabs(fabs(i) - fabs(j))
  
      error32 = 0
      for i, j in zip(audio16L, audio32L):
          error32 += fabs(fabs(i) - fabs(j))
      for i, j in zip(audio16R, audio32R):
          error32 += fabs(fabs(i) - fabs(j))
  
      sum16 = sum(audio16L) + sum(audio16R)
      sum24 = sum(audio24L) + sum(audio24R)
      sum32 = sum(audio32L) + sum(audio32R)
  
      centroid = essentia.standard.Centroid()
      centroid16 = centroid(audio16L)
      centroid24 = centroid(audio24L)
      centroid32 = centroid(audio32L)
  
      self.assertEqual(len(audio16), len(audio24))
      self.assertEqual(len(audio16), len(audio32))
      self.assertAlmostEqual(error24, 0)
      self.assertAlmostEqual(error32, 0)
      self.assertAlmostEqual(sum16 - sum24, 0)
      self.assertAlmostEqual(sum16 - sum32, 0)
      self.assertAlmostEqual(centroid16 - centroid24, 0)
      self.assertAlmostEqual(centroid16 - centroid32, 0)
  
file_path: essentia/test/src/unittests/io/test_audioloader_streaming.py
imports: from essentia_test import *
  import essentia
  from essentia.streaming import AudioLoader
  import sys
label_desc: Use image node_id 11 for calling the TestAudioLoader_Streaming obj's underlying member method code with example usage: obj.testBitrate() without return types