Update app.py

fix voice
en-US-AndrewMultilingualNeural - en-US (Male)

app.py

@@ -135,7 +135,7 @@ import gradio as gr
 
 async def create_demo():
     voices = await get_voices()
-    default_voice = "en-US-AndrewNeural - en-US (Male)"  # 👈 Pick one of the available voices
+    default_voice = "en-US-AndrewMultilingualNeural - en-US (Male)"  # 👈 Pick one of the available voices
     description = """
     Default = male, other voices 1F:US_Emma, 2F:US_Jenny, 3F:HK_Yan, 1M:AU_Will, 2M:IT_Guiseppe,3M:US_Brian,  1C: Childvoice, 1O = OldMan
     You can insert silence using the marker 'SS' followed by the duration in seconds (e.g., 'SS1.2' for a 1.2-second pause).