normalize

#!/bin/python3

"""A script for normalizing the recorded voicelines."""
import os
import argparse

import soundfile as sf
import pyloudnorm as pyln

from glob import glob


audio_directory = "audio"

parser = argparse.ArgumentParser()

os.chdir(os.path.dirname(os.path.abspath(__file__)))

arguments = parser.parse_args()


raw_directory = os.path.join(audio_directory, "raw")
normalized_directory = os.path.join(audio_directory, "normalized")

for path in glob(os.path.abspath(os.path.join(raw_directory, "*.wav"))):
    name = os.path.basename(path)

    data, rate = sf.read(path)

    meter = pyln.Meter(rate)
    loudness = meter.integrated_loudness(data)

    loudness_normalized_audio = pyln.normalize.loudness(data, loudness, -25.0)

    sf.write(os.path.join(normalized_directory, name), loudness_normalized_audio, rate)