Update app.py

app.py

@@ -116,7 +116,7 @@ def generate_answer(query: str) -> str:
 # ====================================================
 
 # Load Whisper model for speech-to-text
-stt_model = whisper.load_model("base")
+stt_model = whisper.load_model("base", device="cpu")
 
 def speech_to_text(audio_array: np.ndarray, sample_rate: int = 16000) -> str:
     # Convert int16 PCM to float32 normalized to [-1, 1]