code: def analyze_file(self, filepath, samplerate=0):
      win_s = 512  # fft size
      hop_s = 256  # hop size
  
      s = source(filepath, samplerate, hop_s)
      samplerate = s.samplerate
  
      tolerance = 0.8
  
      notes_o = notes("default", win_s, hop_s, samplerate)
      total_frames = 0
  
      results = []
      while True:
          samples, read = s()
          new_note = notes_o(samples)
          if new_note[0] != 0:
              note_str = " ".join(["%.2f" % i for i in new_note])
              results.append([total_frames, np.copy(new_note)])
          total_frames += read
          if read < hop_s:
              break
      return results
  
imports: from numpy.testing import TestCase, assert_equal, assert_almost_equal
  from aubio import notes, source
  import numpy
  from utils import list_all_sounds
label_desc: Use image node_id 1 for calling the aubio_notes_sinewave obj's underlying member method code with example usage: obj.analyze_file(filepath, samplerate) and returns: results