initial commit intro. to vocoder submodule

vocoder/datasets/preprocess.py

@@ -0,0 +1,16 @@
+import glob
+import os
+
+import numpy as np
+
+
+def find_wav_files(data_path):
+    wav_paths = glob.glob(os.path.join(data_path, '**', '*.wav'), recursive=True)
+    return wav_paths
+
+
+def load_wav_data(data_path, eval_split_size):
+    wav_paths = find_wav_files(data_path)
+    np.random.seed(0)
+    np.random.shuffle(wav_paths)
+    return wav_paths[:eval_split_size], wav_paths[eval_split_size:]