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| import librosa | |
| import numpy as np | |
| TARGET_SR = 16000 | |
| def load_audio(file_path): | |
| audio, sr = librosa.load(file_path, sr=TARGET_SR) | |
| return audio | |
| def normalize_audio(audio): | |
| audio = audio / np.max(np.abs(audio)) | |
| return audio | |
| def remove_silence(audio): | |
| intervals = librosa.effects.split(audio, top_db=30) | |
| segments = [] | |
| for start, end in intervals: | |
| segments.append(audio[start:end]) | |
| if len(segments) == 0: | |
| return audio | |
| return np.concatenate(segments) |