code: def makeImpulse(self, list, pos):
      if pos >= len(list):
          return
      if pos - 1 >= 0:
          list[pos - 1] = 0.2
      if pos + 1 < len(list):
          list[pos] = 0.3
      list[pos] = 1.0
  
file_path: essentia/test/src/unittests/rhythm/test_onsetrate.py
imports: from essentia_test import *
  from numpy import random
label_desc: Use image node_id 4 for calling the TestOnsetRate obj's underlying member method code with example usage: obj.makeImpulse(list, pos) without return types