resample_audio.py

import librosa
import soundfile as sf
import os
from pathlib import Path

input_dir = "/u01/colombo/hungnt/hieuld/tts/data_2"
output_dir = "/u01/colombo/hungnt/hieuld/tts/data_2_24k"
target_sr = 24000

os.makedirs(output_dir, exist_ok=True)

wav_files = list(Path(input_dir).glob("*.wav"))
print(f"Found {len(wav_files)} wav files")

for wav_path in wav_files:
    print(f"Processing {wav_path.name}...")
    
    # Load audio
    audio, sr = librosa.load(wav_path, sr=None)
    
    # Resample to 24kHz
    if sr != target_sr:
        audio = librosa.resample(audio, orig_sr=sr, target_sr=target_sr)
    
    # Save
    output_path = Path(output_dir) / wav_path.name
    sf.write(output_path, audio, target_sr)
    
    # Copy .lab file if exists
    lab_path = wav_path.with_suffix('.lab')
    if lab_path.exists():
        import shutil
        shutil.copy(lab_path, Path(output_dir) / lab_path.name)

print(f"✓ Done! Audio saved to {output_dir}")
print("Now update your config to use this directory")