I came across this link to an article on The Guardian via Justin Blanton’s blog, and got a kick out of it. Emma Beddington wrote back in October:
There’s a new buzz on TikTok – well, not a buzz exactly. It’s more of a hum, maybe waves crashing, a purring fan or steady, heavy rain. To me, it sounds like an empty aeroplane, cruising peacefully at altitude. It’s brown noise, a close cousin of the better-known white noise, and TikTok users, particularly the platform’s ADHD community, are all over it: there are 85.3m views for the #brownnoise hashtag.