code: def Readrir(num_room):
      """
      Return:
          rir: a numpy array of the room reverberation
          (make sure the test rooms are different from training rooms)
  
      """
      index = num_room + FLAGS.num_train_rooms + 1
      _, rir = wav.read(
          FLAGS.root_dir + FLAGS.rir_dir + "_rir_" + str(index) + ".wav"
      )
      return rir
  
file_path: cleverhans/cleverhans_v3.1.0/examples/adversarial_asr/test_robust_adv.py
imports: import tensorflow
  from lingvo import model_imports
  from lingvo import model_registry
  import numpy
  import scipy.io.wavfile
  import generate_masking_threshold
  from tool import create_features, create_inputs, create_speech_rir
  import time
  from lingvo.core import cluster_factory
  from absl import flags
  from absl import app
label_desc: Use image node_id 2 for calling a global function with example usage: Readrir(num_room) and returns: rir