You've probably heard of white noise. Now pink noise, brown noise -- a whole rainbow of sounds -- are providing competition.
There’s a growing buzz around pink noise, brown noise, green noise — a rainbow of soothing sounds — and their theoretical effects on sleep, concentration and the relaxation response.The science is new with only a few small studies behind it, but that hasn’t stopped thousands of people from listening to hours of these noises on YouTube and on meditation apps that provide a palette of color noises with paid subscriptions.
But the high frequencies of white noise can sound harsh. Pink noise turns down the volume on those higher frequencies, so it sounds lower in pitch and more like the natural sound of rain or the ocean.Pink and brown, like white, have standard definitions to audio experts. Other color noises are more recent creations with very flexible definitions.
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