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| import os | |
| import numpy as np | |
| import librosa | |
| import soundfile as sf | |
| from modules.slicer2 import Slicer | |
| class AutoSlicer: | |
| def __init__(self): | |
| self.slicer_params = { | |
| "threshold": -40, | |
| "min_length": 5000, | |
| "min_interval": 300, | |
| "hop_size": 10, | |
| "max_sil_kept": 500, | |
| } | |
| self.original_min_interval = self.slicer_params["min_interval"] | |
| def auto_slice(self, filename, input_dir, output_dir, max_sec): | |
| audio, sr = librosa.load(os.path.join(input_dir, filename), sr=None, mono=False) | |
| slicer = Slicer(sr=sr, **self.slicer_params) | |
| chunks = slicer.slice(audio) | |
| files_to_delete = [] | |
| for i, chunk in enumerate(chunks): | |
| if len(chunk.shape) > 1: | |
| chunk = chunk.T | |
| output_filename = f"{os.path.splitext(filename)[0]}_{i}" | |
| output_filename = "".join(c for c in output_filename if c.isascii() or c == "_") + ".wav" | |
| output_filepath = os.path.join(output_dir, output_filename) | |
| sf.write(output_filepath, chunk, sr) | |
| #Check and re-slice audio that more than max_sec. | |
| while True: | |
| new_audio, sr = librosa.load(output_filepath, sr=None, mono=False) | |
| if librosa.get_duration(y=new_audio, sr=sr) <= max_sec: | |
| break | |
| self.slicer_params["min_interval"] = self.slicer_params["min_interval"] // 2 | |
| if self.slicer_params["min_interval"] >= self.slicer_params["hop_size"]: | |
| new_chunks = Slicer(sr=sr, **self.slicer_params).slice(new_audio) | |
| for j, new_chunk in enumerate(new_chunks): | |
| if len(new_chunk.shape) > 1: | |
| new_chunk = new_chunk.T | |
| new_output_filename = f"{os.path.splitext(output_filename)[0]}_{j}.wav" | |
| sf.write(os.path.join(output_dir, new_output_filename), new_chunk, sr) | |
| files_to_delete.append(output_filepath) | |
| else: | |
| break | |
| self.slicer_params["min_interval"] = self.original_min_interval | |
| for file_path in files_to_delete: | |
| if os.path.exists(file_path): | |
| os.remove(file_path) | |
| def merge_short(self, output_dir, max_sec, min_sec): | |
| short_files = [] | |
| for filename in os.listdir(output_dir): | |
| filepath = os.path.join(output_dir, filename) | |
| if filename.endswith(".wav"): | |
| audio, sr = librosa.load(filepath, sr=None, mono=False) | |
| duration = librosa.get_duration(y=audio, sr=sr) | |
| if duration < min_sec: | |
| short_files.append((filepath, audio, duration)) | |
| short_files.sort(key=lambda x: x[2], reverse=True) | |
| merged_audio = [] | |
| current_duration = 0 | |
| for filepath, audio, duration in short_files: | |
| if current_duration + duration <= max_sec: | |
| merged_audio.append(audio) | |
| current_duration += duration | |
| os.remove(filepath) | |
| else: | |
| if merged_audio: | |
| output_audio = np.concatenate(merged_audio, axis=-1) | |
| if len(output_audio.shape) > 1: | |
| output_audio = output_audio.T | |
| output_filename = f"merged_{len(os.listdir(output_dir))}.wav" | |
| sf.write(os.path.join(output_dir, output_filename), output_audio, sr) | |
| merged_audio = [audio] | |
| current_duration = duration | |
| os.remove(filepath) | |
| if merged_audio and current_duration >= min_sec: | |
| output_audio = np.concatenate(merged_audio, axis=-1) | |
| if len(output_audio.shape) > 1: | |
| output_audio = output_audio.T | |
| output_filename = f"merged_{len(os.listdir(output_dir))}.wav" | |
| sf.write(os.path.join(output_dir, output_filename), output_audio, sr) | |
| def slice_count(self, input_dir, output_dir): | |
| orig_duration = final_duration = 0 | |
| for file in os.listdir(input_dir): | |
| if file.endswith(".wav"): | |
| _audio, _sr = librosa.load(os.path.join(input_dir, file), sr=None, mono=False) | |
| orig_duration += librosa.get_duration(y=_audio, sr=_sr) | |
| wav_files = [file for file in os.listdir(output_dir) if file.endswith(".wav")] | |
| num_files = len(wav_files) | |
| max_duration = -1 | |
| min_duration = float("inf") | |
| for file in wav_files: | |
| file_path = os.path.join(output_dir, file) | |
| audio, sr = librosa.load(file_path, sr=None, mono=False) | |
| duration = librosa.get_duration(y=audio, sr=sr) | |
| final_duration += float(duration) | |
| if duration > max_duration: | |
| max_duration = float(duration) | |
| if duration < min_duration: | |
| min_duration = float(duration) | |
| return num_files, max_duration, min_duration, orig_duration, final_duration | |