Bernard O'Shea: What is green noise and how does it quiet your mind? 

Green noise: inspired by nature, can quiet your mind, calm your stress, and maybe even send you into a dreamy game show with hummingbirds

Bernard O'Shea: "Green noise is part of a fascinating spectrum of sounds categorised by “colour”: white noise, pink noise, brown noise, and now, green. Who knew noise came with its own palette?". Picture: Moya Nolan.

Imagine this: it’s 2 am. You’ve got a big day tomorrow, and your brain insists on replaying every awkward thing you’ve done since childhood. Suddenly, you remember a drunken conversation you had with your friend when he told you not to slag him off because he told you “I can’t fall asleep anymore without my green noise?”

Green noise? Sounds like DJ set at a festival. Naturally, I Googled it. Turns out, green noise is part of a fascinating spectrum of sounds categorised by “colour”: white noise, pink noise, brown noise, and now, green. Who knew noise came with its own palette?