--- a
+++ b/scripts/get_class_subset.py
@@ -0,0 +1,31 @@
+import sys
+import os
+from pathlib import Path
+import shutil
+
+
+def main(data_root):
+    SUBSET_COUNT = 1
+    CLASS_TO_SUBSET = "1"
+    SOURCE_DIR = data_root + "/" + CLASS_TO_SUBSET
+    DEST_DIR = data_root + "/" + CLASS_TO_SUBSET + "_subset"
+    if not os.path.exists(DEST_DIR):
+        os.mkdir(DEST_DIR)
+    counter = 0
+    subset_class_other_iter = Path(SOURCE_DIR).glob("*_other.npy")
+    for f in subset_class_other_iter:
+        counter = counter + 1
+        other_filename = str(f).split("/")[-1]
+        mfcc_filename = "_".join(other_filename.split("_")[:-1]) + "_mfcc.npy"
+        shutil.copy(SOURCE_DIR + "/" + other_filename, DEST_DIR + "/" + other_filename)
+        shutil.copy(SOURCE_DIR + "/" + mfcc_filename, DEST_DIR + "/" + mfcc_filename)
+        if counter == SUBSET_COUNT:
+            break
+    os.rename(SOURCE_DIR, data_root + "/" + CLASS_TO_SUBSET + "_old" )
+    os.rename(DEST_DIR, SOURCE_DIR)
+
+
+if __name__ == "__main__":
+    # needs one command line argument.
+    # 1. root path of data
+    main(sys.argv[1])