def METHOD_NAME():
    parser = argparse.ArgumentParser(
        description="apply low_frame_rate and cmvn",
        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
    )
    parser.add_argument(
        "--ark-file",
        "-a",
        default=False,
        required=True,
        type=str,
        help="fbank ark file",
    )
    parser.add_argument(
        "--lfr",
        "-f",
        default=True,
        type=str,
        help="low frame rate",
    )
    parser.add_argument(
        "--lfr-m",
        "-m",
        default=7,
        type=int,
        help="number of frames to stack",
    )
    parser.add_argument(
        "--lfr-n",
        "-n",
        default=6,
        type=int,
        help="number of frames to skip",
    )
    parser.add_argument(
        "--cmvn-file",
        "-c",
        default=False,
        required=True,
        type=str,
        help="global cmvn file",
    )
    parser.add_argument(
        "--ark-index",
        "-i",
        default=1,
        required=True,
        type=int,
        help="ark index",
    )
    parser.add_argument(
        "--output-dir",
        "-o",
        default=False,
        required=True,
        type=str,
        help="output dir",
    )
    return parser