Someone suggested in the comments that I should just wear earplugs instead. This was my response to him: "But the rest of the world doesn’t make annoying noises that I want to block out — only the computer does. I still want to hear the birds tweeting in the trees and the wind blowing past the awnings and the rain hitting the roof and the ice-cream truck driving by and my wife chuckling at something she’s watching and the cats running along the floor and the microwave oven heating a meal and the kettle finishing its boil. I’m not trying to disconnect from the rest of the world — I’m trying to reconnect to it."

A lot of the most interesting and enjoyable sounds in life are very, very faint. It doesn't take much noise to drown them out. Even a single fan will do it. Now I can hear those noises and get 'work' done at the same time. It's really hard to describe, but 'magical' comes close.

Thanks for asking.