New house to me anyway. The wind is up and my house makes some sort of daft fog horn like noise, a bit like metal being dragged along concrete or similar.
What on earth is this? Im guessing the wind blowing up the soffets or something?
Defo an outside noise, windows were done by the previous owner about 6 months ago so this looks probable and sound like it comes from the top of the window
Also see an alarm box on the outside of the house with vents on it, could be that, its defunked anyway