Update app.py

app.py

@@ -128,13 +128,17 @@ def synthesize(text: str, model_name: str, speaker_name=None) -> str:
 
 # Callback function to update UI based on the selected model
 
-def get_speakers(model_name):
-    synthesizer = synthesizers.get(model_name)
-    if synthesizer and hasattr(synthesizer.tts_model, 'speaker_manager'):
+def update_options(model_name):
+    synthesizer = synthesizers[model_name]
+    # if synthesizer.tts.is_multi_speaker:
+    if model_name is MODEL_NAMES[1]:
         speakers = synthesizer.tts_model.speaker_manager.speaker_names
+        # return options for the dropdown
         return speakers
     else:
+        # return empty options if not multi-speaker
         return []
+        
 # Create Gradio interface
 iface = gr.Interface(
     fn=synthesize,