Usually, when the RAT is really deployed because of an emergency, the jet engines will be a lot more silent (because they're not producing any power). Although

Usually, when the RAT is really deployed because of an emergency, the jet engines will be a lot more silent (because they're not producing any power). Although I'm not really sure how loud a windmilling jet engine really is, and I somehow doubt there is a YouTube video of a plane landing with both engines disabled - but you never know...