This isn't the first noise map, but it's pretty neat.
Where I live I'm able to see three flight paths into Ohare airport, but they are still way up and out. I can hear some of the planes if they are exceptionally low or taking a lesser used route and I really enjoy it. When I do hear a plane it's more of a white noise compared to what people near the airport deal with.
Anyhow. It's pretty neat to see what you've been hearing.
When I'm out in the country I'm amazed at how much of a presence highway noise can be. You really need to get off the beaten path to get away from it.
What's it like where you live?

compare that to ...

"Almost" Good Answers: