code: def get_hpcp(audio_path):
      audio = MonoLoader(filename=audio_path)()
      w = Windowing(type="blackmanharris62", size=4096)
      spec = Spectrum(size=4096)
      s_peak = SpectralPeaks(minFrequency=30)
      hpcp_algo = HPCP()
      pcp = []
      for frame in FrameGenerator(audio, frameSize=4096, hopSize=2048):
          peak_freq, peak_mag = s_peak(spec(w(frame)))
          pcp.append(hpcp_algo(peak_freq, peak_mag))
  
      return np.array(pcp, dtype=np.single)
  
imports: from essentia_test import *
  import numpy
label_desc: Use image node_id 2 for calling the TestChordsDetectionBeats obj's underlying member method code with example usage: obj.get_hpcp(audio_path) and returns: np