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import argparse
import glob
import os
from argparse import RawTextHelpFormatter
from multiprocessing import Pool
from shutil import copytree
import librosa
import soundfile as sf
from tqdm import tqdm
def resample_file(func_args):
filename, output_sr = func_args
y, sr = librosa.load(filename, sr=output_sr)
sf.write(filename, y, sr)
def resample_files(input_dir, output_sr, output_dir=None, file_ext="wav", n_jobs=10):
if output_dir:
print("Recursively copying the input folder...")
copytree(input_dir, output_dir)
input_dir = output_dir
print("Resampling the audio files...")
audio_files = glob.glob(os.path.join(input_dir, f"**/*.{file_ext}"), recursive=True)
print(f"Found {len(audio_files)} files...")
audio_files = list(zip(audio_files, len(audio_files) * [output_sr]))
with Pool(processes=n_jobs) as p:
with tqdm(total=len(audio_files)) as pbar:
for _, _ in enumerate(p.imap_unordered(resample_file, audio_files)):
pbar.update()
print("Done !")
if __name__ == "__main__":
parser = argparse.ArgumentParser(
description="""Resample a folder recusively with librosa
Can be used in place or create a copy of the folder as an output.\n\n
Example run:
python TTS/bin/resample.py
--input_dir /root/LJSpeech-1.1/
--output_sr 22050
--output_dir /root/resampled_LJSpeech-1.1/
--file_ext wav
--n_jobs 24
""",
formatter_class=RawTextHelpFormatter,
)
parser.add_argument(
"--input_dir",
type=str,
default=None,
required=True,
help="Path of the folder containing the audio files to resample",
)
parser.add_argument(
"--output_sr",
type=int,
default=22050,
required=False,
help="Samlple rate to which the audio files should be resampled",
)
parser.add_argument(
"--output_dir",
type=str,
default=None,
required=False,
help="Path of the destination folder. If not defined, the operation is done in place",
)
parser.add_argument(
"--file_ext",
type=str,
default="wav",
required=False,
help="Extension of the audio files to resample",
)
parser.add_argument(
"--n_jobs", type=int, default=None, help="Number of threads to use, by default it uses all cores"
)
args = parser.parse_args()
resample_files(args.input_dir, args.output_sr, args.output_dir, args.file_ext, args.n_jobs)
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