code: def main():
      parser = get_parser()
      args = parser.parse_args()
  
      # logging info
      logging.basicConfig(
          level=logging.INFO,
          format="%(asctime)s (%(module)s:%(lineno)d) %(levelname)s: %(message)s",
      )
      logging.info(get_commandline_args())
  
      # check directory
      if not os.path.exists(args.outdir):
          os.makedirs(args.outdir)
  
      for idx, (utt_id, lmspc) in enumerate(
          file_reader_helper(args.rspecifier, args.filetype), 1
      ):
          if args.n_mels is not None:
              spc = logmelspc_to_linearspc(
                  lmspc,
                  fs=args.fs,
                  n_mels=args.n_mels,
                  n_fft=args.n_fft,
                  fmin=args.fmin,
                  fmax=args.fmax,
              )
          else:
              spc = lmspc
          y = griffin_lim(
              spc,
              n_fft=args.n_fft,
              n_shift=args.n_shift,
              win_length=args.win_length,
              window=args.window,
              n_iters=args.iters,
          )
          logging.info("(%d) %s" % (idx, utt_id))
          write(
              args.outdir + "/%s.wav" % utt_id,
              args.fs,
              (y * np.iinfo(np.int16).max).astype(np.int16),
          )
  
file_path: espnet/utils/convert_fbank_to_wav.py
imports: import argparse
  import logging
  import os
  import librosa
  import numpy
  from packaging.version import parse
  from scipy.io.wavfile import write
  from espnet.utils.cli_readers import file_reader_helper
  from espnet.utils.cli_utils import get_commandline_args
label_desc: Use image node_id 4 for calling a global function with example usage: main() without return types