add stop duration option

app.py

@@ -11,12 +11,12 @@ def text_to_speech(text,stop_duration_text):
     # prevent too long text
     if len(text) > 500:
         text = text[:500]
-    stop_duration_float = float(stop_duration_text)
+    # stop_duration_float = float(stop_duration_text)
     text = nat_normalize_text(text)
     mel = text2mel(
         text,
         "lexicon.txt",
-        stop_duration_float,
+        stop_duration_text,
         "acoustic_latest_ckpt.pickle",
         "duration_latest_ckpt.pickle",
     )
@@ -38,7 +38,7 @@ description = "SLT Vietnamese Text to speech demo."
 
 gr.Interface(
     fn=speak, 
-    inputs=["text","text"],
+    inputs="text","number",
     outputs="audio",
     title = title,
     examples = [