Update app.py

app.py

@@ -38,9 +38,9 @@ async def get_voices():
 
 # Gradio 介面函數
 async def tts_interface(text, voice, rate_percentage, pitch_hz):
-    # 將百分比和 Hz 轉換為 Edge TTS 期望的格式
-    rate = f"{rate_percentage}%"
-    pitch = f"{pitch_hz}Hz"
+    # 確保 rate 和 pitch 始終包含符號
+    rate = f"{'+' if rate_percentage >= 0 else ''}{rate_percentage}%"
+    pitch = f"{'+' if pitch_hz >= 0 else ''}{pitch_hz}Hz"
     
     audio_path = await generate_speech(text, voice, rate, pitch)
     return audio_path
@@ -67,4 +67,3 @@ async def main():
 
 if __name__ == "__main__":
     asyncio.run(main())
-