Having gone offroading near wind turbines, depending on some conditions (I don't know if it's wind, temperature, or what), they really do sound like that, and for quite some distance. The one depicted in that video is WAY too close to any home. The fact it was approved/OK'ed absolutely blows my mind. I should dig up my videos of being up in the mountains near the wind turbines... though it's tough for any video to accurately convey the level of audible disturbance, of course.