code: def get_parser():
      parser = argparse.ArgumentParser(
          description="generate wav from FBANK using wavenet vocoder",
          formatter_class=argparse.ArgumentDefaultsHelpFormatter,
      )
      parser.add_argument(
          "--fs", type=int, default=22050, help="Sampling frequency"
      )
      parser.add_argument(
          "--n_fft", type=int, default=1024, help="FFT length in point"
      )
      parser.add_argument(
          "--n_shift",
          type=int,
          default=256,
          help="Shift length in point",
      )
      parser.add_argument(
          "--model", type=str, default=None, help="WaveNet model"
      )
      parser.add_argument(
          "--filetype",
          type=str,
          default="mat",
          choices=["mat", "hdf5"],
          help="Specify the file format for the rspecifier. "
          '"mat" is the matrix format in kaldi',
      )
      parser.add_argument(
          "rspecifier", type=str, help="Input feature e.g. scp:feat.scp"
      )
      parser.add_argument("outdir", type=str, help="Output directory")
      return parser
  
file_path: espnet/utils/generate_wav_from_fbank.py
imports: import argparse
  import logging
  import os
  import time
  import h5py
  import numpy
  import pysptk
  import torch
  from scipy.io.wavfile import write
  from sklearn.preprocessing import StandardScaler
  from espnet.nets.pytorch_backend.wavenet import WaveNet, decode_mu_law, encode_mu_law
  from espnet.utils.cli_readers import file_reader_helper
  from espnet.utils.cli_utils import get_commandline_args
label_desc: Use image node_id 1 for calling a global function with example usage: get_parser() and returns: parser