code: def testRegression(self):
      audio = MonoLoader(
          filename=join(
              testdata.audio_dir, "recorded", "techno_loop.wav"
          )
      )()
      rhythm = stdRhythmExtractor()
  
      bpm, _, _, _ = rhythm(audio)
      self.assertAlmostEqualFixedPrecision(bpm, 126, 0)
  
file_path: essentia/test/src/unittests/rhythm/test_rhythmextractor.py
imports: from essentia_test import *
  from essentia.streaming import RhythmExtractor
  from essentia.standard import MonoLoader, RhythmExtractor
  from math import fabs
label_desc: Use image node_id 1 for calling the TestRhythmExtractor obj's underlying member method code with example usage: obj.testRegression() without return types