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"""Find all the unique characters in a dataset"""
import argparse
from argparse import RawTextHelpFormatter
from TTS.config import load_config
from TTS.tts.datasets import load_tts_samples
def main():
# pylint: disable=bad-option-value
parser = argparse.ArgumentParser(
description="""Find all the unique characters or phonemes in a dataset.\n\n"""
"""
Example runs:
python TTS/bin/find_unique_chars.py --config_path config.json
""",
formatter_class=RawTextHelpFormatter,
)
parser.add_argument("--config_path", type=str, help="Path to dataset config file.", required=True)
args = parser.parse_args()
c = load_config(args.config_path)
# load all datasets
train_items, eval_items = load_tts_samples(
c.datasets, eval_split=True, eval_split_max_size=c.eval_split_max_size, eval_split_size=c.eval_split_size
)
items = train_items + eval_items
texts = "".join(item["text"] for item in items)
chars = set(texts)
lower_chars = filter(lambda c: c.islower(), chars)
chars_force_lower = [c.lower() for c in chars]
chars_force_lower = set(chars_force_lower)
print(f" > Number of unique characters: {len(chars)}")
print(f" > Unique characters: {''.join(sorted(chars))}")
print(f" > Unique lower characters: {''.join(sorted(lower_chars))}")
print(f" > Unique all forced to lower characters: {''.join(sorted(chars_force_lower))}")
if __name__ == "__main__":
main()
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