from pathlib import Path


def _get_audio_file_name(s: Path) \
        -> str:
    """Returns the original audio file name from clotho file.

    :param s: Clotho file name.
    :type s: pathlib.Path
    :return: Original audio file name.
    :rtype: str
    """
    return s.stem.split('clotho_file_')[-1].split('.wav')[0]