:bug: fix repetizer

app.py

@@ -102,7 +102,7 @@ if audio.any():
             if np.random.randint(100) < prob and pshift
             else chunk
         )
-        chunk = chunk + chunk if np.random.randint(100) < prob and reps else chunk
+        chunk = np.concatenate([chunk, chunk]) if np.random.randint(100) < prob and reps else chunk
         chunk = np.flip(chunk) if np.random.randint(100) < prob and reverse else chunk
         processed += [s for s in chunk]