code: def hop_impulse(request):
      return 64 * request.param
  
imports: from __future__ import division
  import warnings
  import os
  from typing import Optional
  import librosa
  import numpy
  import scipy.stats
  import pytest
  from test_core import srand
label_desc: Use image node_id 19 for calling a global function with example usage: hop_impulse(request) and returns: unknown