code: def main(args):
      aishell1_dir = args.aishell1_dir
      # Create aishell1 metadata directory
      aishell1_md_dir = os.path.join(aishell1_dir, "metadata")
      os.makedirs(aishell1_md_dir, exist_ok=True)
      create_aishell1_metadata(aishell1_dir, aishell1_md_dir)
  
file_path: speechbrain/recipes/Aishell1Mix/separation/scripts/create_aishell1_metadata.py
imports: import os
  import argparse
  import soundfile
  import pandas
  import glob
  from tqdm import tqdm
label_desc: Use image node_id 1 for calling a global function with example usage: main(args) without return types