I have a white noise app on my Mac laptop that helps me focus. I noticed it doesn’t have “on” and “off” modes. It has “play” and “pause” modes. Apparently it’s never “off.” You will always listen again. If you’re not listening, you are simply preparing to listen.
As of this writing, these are the available sounds:
Airplane
Beach
City
Crickets
Fan
Fan 2
Fan 3
Fire
Ocean
Pier
Rain – Light
Rain – Heavy
Rainforest
River
Shower
Thunderstorm
Wind
Wind Chimes
Blue Noise
Brown Noise
Pink Noise
Violet Noise
White Noise
I use the “airplane” noise mode, myself. I’ve become so accustomed to its tonality that I’ve been known to use it while on airplanes, which is ironic given that I usually use noise cancelling headphones on planes to block out the actual airplane noise. This is to say, I both eliminate the sound of the plane and then pipe in the artificial sound of the plane. The action is, from one perspective, the sonic equivalent of tearing out your backyard and laying down astroturf. Though of course, it’s nothing like that.
As for the other options, I appreciate the cicadas, but it mostly makes me think of camping, which is not on my personal list of ideal situations. I’ll take a non-reclining coach seat on an airplane over camping.
Of the “color” noises, I occasionally opt for brown, which is essentially airplane noise reduced to a mathematical formula. Brown noise is the airplane noise of a low-polygon simulation of flight.
One thing the app lacks is café chatter — better yet, café chatter in a language I don’t understand (which would be any language other than English, though I’m coming up on a year-long streak in Duolingo German, so who knows). Perhaps chatter will come with a future upgrade.