Update app.py

app.py

@@ -117,4 +117,21 @@ def main():
         except sr.UnknownValueError:
             pass
 
-    if selected_device_index is not
+    if selected_device_index is not None:
+        print(f"Usando el dispositivo {selected_device_index}")
+        with sr.Microphone(device_index=selected_device_index) as source:
+            print("Habla ahora...")
+
+            stream = source.stream
+            while True:
+                frames, overflowed = stream.read(1024)
+                if overflowed:
+                    print("Overflowed!")
+                    continue
+
+                process_audio(frames, r, vad)
+    else:
+        print("No se encontraron dispositivos de micrófono válidos. Saliendo.")
+
+if __name__ == "__main__":
+    main()