code: def add_reverb(sasxExe, input_wav, filter_file, output_wav):
      """Function to add reverb"""
      command_sasx_apply_reverb = "{0} -r {1} \
          -f {2} -o {3}".format(
          sasxExe, input_wav, filter_file, output_wav
      )
  
      subprocess.call(command_sasx_apply_reverb)
      return output_wav
  
file_path: speechbrain/recipes/DNS/noisyspeech_synthesizer/audiolib.py
imports: import os
  import numpy
  import soundfile
  import subprocess
  import glob
  import librosa
label_desc: Use image node_id 6 for calling a global function with example usage: add_reverb(sasxExe, input_wav, filter_file, output_wav) and returns: output_wav