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The science of noise colors: why white noise makes you sleepy and blue noise helps you focusWhile green noise has long been my favorite, I may have discovered a new contender while writing this article: blue noise. "Blue noise is the highest frequency of these sound profiles," explains Shah.
You can also find brown noise on most sleep sound apps. The energy of blue noise is mostly concentrated at the high-frequency end, with very few deep tones to balance it out. As such, blue noise ...
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