examples/channel_dual_to_single.py

#!/usr/bin/python3
# -*- coding: utf-8 -*-
import argparse
import os
from pathlib import Path

from scipy.io import wavfile
from tqdm import tqdm

from project_settings import project_path


def get_args():
    parser = argparse.ArgumentParser()

    parser.add_argument(
        "--wav_dir",
        default=(project_path / "data/early_media/234/wav").as_posix(),
        type=str
    )

    args = parser.parse_args()
    return args


def main():
    args = get_args()

    wav_dir = Path(args.wav_dir)
    for filename in tqdm(wav_dir.glob("*.wav")):
        print(filename)

        try:
            sample_rate, signal = wavfile.read(filename)
        except UnboundLocalError:
            os.remove(filename)
            continue
        if sample_rate != 8000:
            raise AssertionError

        if len(signal) < 1.0 * sample_rate:
            os.remove(filename.as_posix())
            continue

        # print(signal.shape)
        if signal.ndim != 2:
            continue
        signal = signal[:, 0]
        # print(signal.shape)

        wavfile.write(filename.as_posix(), rate=8000, data=signal)
        # wavfile.write("temp2.wav", rate=8000, data=signal)
        # exit(0)
    return


if __name__ == '__main__':
    main()