Update app.py

app.py

@@ -5,6 +5,8 @@ import tempfile
 import anyio
 import asyncio
 
+from edge_tts.exceptions import NoAudioReceived # Import the specific exception
+
 # --- Voice Data ---
 # Uses the dictionary loaded from your tts_voice.py file
 language_dict = tts_order_voice
@@ -12,26 +14,29 @@ DEFAULT_LANGUAGE = list(language_dict.keys())[0]
 
 # --- Core TTS Function (Asynchronous) ---
 async def text_to_speech_edge(text, language_code):
-    # 1. Input Validation
-    if not text or not text.strip():
-        return "ERROR: Input text cannot be empty.", None
-
+    voice = language_dict[language_code]
+    
+    # Try block to catch the failure
     try:
-        voice = language_dict[language_code]
         communicate = edge_tts.Communicate(text, voice)
-        
-        # Create a temporary file path
         with tempfile.NamedTemporaryFile(delete=False, suffix=".mp3") as tmp_file:
             tmp_path = tmp_file.name
-
-        # Generate audio file
+        
         await communicate.save(tmp_path)
-
-        return f"语音合成完成：{text}", tmp_path
-
+        
+        return "语音合成完成：{}".format(text), tmp_path
+        
+    except NoAudioReceived as e:
+        error_msg = f"ERROR: Failed to generate audio for voice '{voice}'. The Edge TTS service did not return any audio data. Please try a different voice, use shorter text, or upgrade the 'edge-tts' library. Details: {str(e)}"
+        print(error_msg)
+        
+        # Return the error message and None for audio
+        return error_msg, None
+        
     except Exception as e:
-        # Handle all generation errors
-        return f"ERROR: Failed to generate audio. Details: {str(e)}", None
+        error_msg = f"An unexpected error occurred: {str(e)}"
+        print(error_msg)
+        return error_msg, None
 
 
 # --- Gradio UI Definition ---