| | import numpy as np |
| | import tqdm |
| | import matplotlib.pyplot as plt |
| | import os |
| | import shutil |
| | import wave |
| |
|
| | WAV_MIN_LENGTH = 2 |
| | SAMPLE_RATE = 1 |
| | SAMPLE_MIN = 5 |
| | SAMPLE_MAX = 5 |
| |
|
| |
|
| | |
| | def check_duration(wav_file): |
| | |
| | f = wave.open(wav_file, "rb") |
| | |
| | frames = f.getnframes() |
| | rate = f.getframerate() |
| | |
| | duration = frames / float(rate) |
| | |
| | f.close() |
| | |
| | return duration > WAV_MIN_LENGTH |
| |
|
| | |
| | def split_data(src_dir, dst_dir, ratio): |
| | |
| | if not os.path.exists(dst_dir): |
| | os.makedirs(dst_dir) |
| | |
| | |
| | subdirs, files, subfiles = [], [], [] |
| | for item in os.listdir(src_dir): |
| | item_path = os.path.join(src_dir, item) |
| | if os.path.isdir(item_path): |
| | subdirs.append(item) |
| | for subitem in os.listdir(item_path): |
| | subitem_path = os.path.join(item_path, subitem) |
| | if os.path.isfile(subitem_path) and subitem.endswith(".wav"): |
| | subfiles.append(subitem) |
| | elif os.path.isfile(item_path) and item.endswith(".wav"): |
| | files.append(item) |
| |
|
| | |
| | if len(files) == 0: |
| | if len(subfiles) == 0: |
| | print(f"Error: No wav files found in {src_dir}") |
| | return |
| | |
| | |
| | num_files = int(len(files) * ratio) |
| | num_files = max(SAMPLE_MIN, min(SAMPLE_MAX, num_files)) |
| |
|
| | |
| | np.random.shuffle(files) |
| | selected_files = files[:num_files] |
| | |
| | |
| | pbar = tqdm.tqdm(total=num_files) |
| |
|
| | |
| | for file in selected_files: |
| | src_file = os.path.join(src_dir, file) |
| | |
| | if not check_duration(src_file): |
| | print(f"Skipped {src_file} because its duration is less than 2 seconds.") |
| | continue |
| | |
| | dst_file = os.path.join(dst_dir, file) |
| | shutil.move(src_file, dst_file) |
| | pbar.update(1) |
| |
|
| | pbar.close() |
| |
|
| | |
| | for subdir in subdirs: |
| | |
| | src_subdir = os.path.join(src_dir, subdir) |
| | dst_subdir = os.path.join(dst_dir, subdir) |
| | |
| | split_data(src_subdir, dst_subdir, ratio) |
| |
|
| | |
| |
|
| | def main(): |
| | root_dir = os.path.abspath('.') |
| | dst_dir = root_dir + "/data/val/audio/1" |
| | |
| | ratio = float(SAMPLE_RATE) / 100 |
| |
|
| | |
| | src_dir = root_dir + "/data/train/audio/1" |
| |
|
| | |
| | split_data(src_dir, dst_dir, ratio) |
| |
|
| | |
| | if __name__ == "__main__": |
| | main() |