Update app.py

speed improvement

app.py

@@ -1,6 +1,11 @@
 import gradio as gr
 import whisper
+import torch
 import os
+import tempfile
+
+device = "cuda" if torch.cuda.is_available() else "cpu"
+print(f"Using device: {device}")
 
 model = whisper.load_model("base")