update tts

app.py

@@ -1,4 +1,6 @@
 import gradio as gr
+import torch
+import numpy as np
 from nemo.collections.tts.models import FastPitchModel
 from nemo.collections.tts.models import HifiGanModel
 from nemo.collections.tts.models import MixerTTSModel
@@ -26,11 +28,14 @@ def run():
         inputs=[gr.Textbox(value="This is a test.", label="Text to Synthesize"),
                 gr.Slider(0, 10, step=1, label="Speaker")],
         outputs="audio",
-        examples=[
-        ["Hello world", 0],
-    ]
     )
 
+    gr.Markdown("## Examples")
+    gr.Examples(
+        examples=[["Hello world", 0]],
+        fn=generate_tts,
+        )
+    
     demo.launch(server_name="0.0.0.0", server_port=7860)