code: def D22050(y22050):
      return librosa.stft(y22050)
  
imports: import os
  import numpy
  import scipy.sparse
  import librosa
  import sklearn.decomposition
  import pytest
  from test_core import srand
label_desc: Use image node_id 9 for calling a global function with example usage: D22050(y22050) and returns: librosa