I wonder if the noise becomes a lesser concern once the turbines reach a certain size? I was in Iowa a couple of years ago and the sight of the turbines near the freeway was truly something, but I don't think I could hear them when I stopped to take a look.
The turbines I saw in Iowa weren't loud enough to drown out distance sounds of the highway. I didn't hear them at all, but I guess there's also tinnitus to be contended with...
