code: def testImpulseTrain(self):
      for i in range(4):
          frameSize = 2**i * 1024
  
          for j in range(20):
              factor = 0.05 * j + 5
  
              self.ImpulseTrain(frameSize, factor, 0.1)
  
file_path: essentia/test/src/unittests/rhythm/test_onsetrate_streaming.py
imports: from essentia_test import *
  from essentia.streaming import OnsetRate
label_desc: Use image node_id 4 for calling the TestStreamingOnsetRate obj's underlying member method code with example usage: obj.testImpulseTrain() without return types