Convert given directory containing stereo files to mono files

stereo2mono.py

#!/usr/bin/env python3
import os
import argparse
import glob
from pydub import AudioSegment

def stereo2mono(files):
    """Convert all files from stereo to mono.
    Note: this would effectively also create a copy of files that were already in a mono format
    Parameters
    ----------
    files : iterable
        Sequence of files
    Example use:
    ```
    $ python3 stereo2mono.py -f /path/to/audio/files/
    ```
    Then you may remove the files that do not contain the '_mono' tag with: 
    $ find . -name "*-??.wav" -delete # for emovo
    """
    for f in files:
        print(f"Converting {f}")
        # Load audio
        sound = AudioSegment.from_wav(f)
        # Convert to mono
        sound = sound.set_channels(1)
        # Save file
        stem, ext = os.path.splitext(f)
        sound.export(f'{stem}_mono{ext}', format='wav')


if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Convert stereo to mono')
    parser.add_argument('-f', '--folder', 
        type=str, help='Path to wavfiles')
    args = parser.parse_args()
    files = glob.glob(args.folder + '**/*.wav', recursive=True)
    stereo2mono(files)