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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.

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The big ones can be really loud. As the blades get longer, tip speed becomes truly impressive.

This was interesting.

https://www.youtube.com/watch?v=zKgN2G9d0dc

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...

I think it's just fud and nimbyism, I live very near a bunch of large windmills and I cannot hear them at all.

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