code: def win_args(sample_rate, window_size_sec, window_stride_sec):
      win_length = int(sample_rate * window_size_sec)  # frame size
      hop_length = int(sample_rate * window_stride_sec)
      return win_length, hop_length
  
imports: import nose_utils
  import nvidia.dali.fn
  from nvidia.dali import pipeline_def
  import nvidia.dali.types
  from test_utils import get_files, to_array
  import numpy
  import librosa
  import torch
  import math
  import random
  import os
  from nose.tools import nottest
label_desc: Use image node_id 4 for calling a global function with example usage: win_args(sample_rate, window_size_sec, window_stride_sec) and returns: win_length,  hop_length