code: def triangular(size):
      window = []
      for i in range(size):
          window.append(
              2.0
              / size
              * (size / 2.0 - abs(float(i - (size - 1.0) / 2.0)))
          )
      return window
  
file_path: essentia/test/src/unittests/standard/test_windowing.py
imports: from essentia_test import *
  import math
label_desc: Use image node_id 3 for calling a global function with example usage: triangular(size) and returns: window