code: def sr_impulse(request):
      return 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 18 for calling a global function with example usage: sr_impulse(request) and returns: request