code: def _exp(x, base):
      if base == 10:
          return np.power(10, x)
      return np.exp(x)
  
imports: from io import BytesIO
  from typing import Tuple
  import librosa
  import numpy
  import scipy
  import soundfile
  from librosa import magphase, pyin
label_desc: Use image node_id 4 for calling a global function with example usage: _exp(x, base) and returns: np, np