Pink noise is a color of noise, not entirely unlike white noise. Both white and pink noise contain all the frequencies that are audible to humans — 20 hertz to 20,000 hertz — but the way signal power is distributed differs.
via LiveScience.com http://www.livescience.com/38464-what-is-pink-noise.html
via LiveScience.com http://www.livescience.com/38464-what-is-pink-noise.html
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