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devide.py

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+import os
+import shutil
+
+ROOT = "./"
+MAX_FILES = 8000  # 每个子目录最多文件数
+
+def split_directory(dirpath):
+    """
+    将 dirpath 下的直接文件分成 part_xxx 子目录
+    """
+    print(f"→ Splitting directory: {dirpath}")
+
+    files = [
+        f for f in os.listdir(dirpath)
+        if os.path.isfile(os.path.join(dirpath, f))
+    ]
+
+    total = len(files)
+    print(f"  Found {total} files.")
+
+    # 按 MAX_FILES 分块
+    for idx in range(0, total, MAX_FILES):
+        part = idx // MAX_FILES
+        subdir = os.path.join(dirpath, f"part_{part:03d}")
+        os.makedirs(subdir, exist_ok=True)
+
+        for filename in files[idx: idx + MAX_FILES]:
+            src = os.path.join(dirpath, filename)
+            dst = os.path.join(subdir, filename)
+            shutil.move(src, dst)
+
+        print(f"  - Created {subdir}")
+
+    print(f"✔ Completed: {dirpath}\n")
+
+
+def walk_and_process(root):
+    """
+    递归遍历整个目录树，发现需要拆分的目录就拆分
+    """
+    for dirpath, dirnames, filenames in os.walk(root):
+        # 过滤掉我们自己创建的 part_000/part_001 目录，避免再次处理
+        dirnames[:] = [d for d in dirnames if not d.startswith("part_")]
+
+        file_count = len([
+            f for f in filenames
+            if os.path.isfile(os.path.join(dirpath, f))
+        ])
+
+        if file_count > 10000:
+            print(f"▶ Found big directory: {dirpath} ({file_count} files)")
+            split_directory(dirpath)
+
+
+if __name__ == "__main__":
+    walk_and_process(ROOT)
+    print("🎉 All oversized directories processed.")

statistic.py

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+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import os
+import librosa
+from collections import Counter
+from tqdm import tqdm
+import sys
+
+def is_leaf_dir(path):
+    """判断是否为最原子的子文件夹（无子文件夹）"""
+    for item in os.listdir(path):
+        if os.path.isdir(os.path.join(path, item)):
+            return False
+    return True
+
+
+def get_wav_length(path):
+    try:
+        y, sr = librosa.load(path, sr=None, mono=True)
+        return round(len(y) / sr)
+    except Exception as e:
+        print(f"读取失败: {path} 错误: {e}")
+        return None
+
+
+def main(noise_root):
+    noise_root = os.path.abspath(noise_root)
+
+    print("扫描所有 leaf（最原子）子文件夹...\n")
+    leaf_dirs = []
+
+    # 遍历 noise 根目录下所有文件夹
+    for dataset in os.listdir(noise_root):  # MUSAN、DEMAND、ESC50 …
+        dataset_path = os.path.join(noise_root, dataset)
+        if not os.path.isdir(dataset_path):
+            continue
+
+        # 深度遍历，找所有最原子的子文件夹
+        for root, dirs, files in os.walk(dataset_path):
+            if is_leaf_dir(root):
+                leaf_dirs.append(root)
+
+    print("发现的 leaf 文件夹：")
+    for d in leaf_dirs:
+        print(" -", d)
+
+    print("\n开始统计...\n")
+
+    all_results = {}
+
+    for leaf in leaf_dirs:
+        counter = Counter()
+        wav_count = 0
+
+        # 遍历该 leaf 下的所有 wav
+        for f in tqdm(os.listdir(leaf), desc=f"[{leaf}]"):
+            if not f.lower().endswith(".wav"):
+                continue
+
+            wav_count += 1
+            path = os.path.join(leaf, f)
+            L = get_wav_length(path)
+            if L is not None:
+                counter[L] += 1
+
+        all_results[leaf] = (wav_count, counter)
+
+    # 打印结果
+    print("\n============== 统计结果 ==============\n")
+
+    for leaf, (cnt, dist) in all_results.items():
+        print(f"📁 {leaf}")
+        print(f"  WAV 数量：{cnt}")
+        print("  时长分布（秒）：")
+        for L in sorted(dist):
+            print(f"    {L:2d}s : {dist[L]}")
+        print()
+
+    print("统计完成！")
+
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print("用法: python stats_leaf_folders.py <noise根目录>")
+        print("示例: python stats_leaf_folders.py noise")
+        sys.exit(1)
+
+    main(sys.argv[1])