code: def __test_hz(ann_orig, ann_new, n):
      scale = 2.0 ** (float(n) / 12)
  
      for obs1, obs2 in zip(ann_orig, ann_new):
          ap_(obs1.value * scale, obs2.value)
  
imports: from copy import deepcopy
  import re
  import six
  import numpy
  import soundfile
  import jams
  import librosa
  import muda
  import pytest
  import scipy
  from contextlib import contextmanager
label_desc: Use image node_id 19 for calling a global function with example usage: __test_hz(ann_orig, ann_new, n) without return types