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2. Colors of noise - Wikipedia

   en.wikipedia.org/wiki/Colors_of_noise

   Pink noise spectrum. Power density falls off at 10 dB/decade (−3.01 dB/octave). The frequency spectrum of pink noise is linear in logarithmic scale; it has equal power in bands that are proportionally wide. [4] This means that pink noise would have equal power in the frequency range from 40 to 60 Hz as in the band from 4000 to 6000 Hz.

3. Pink noise - Wikipedia

   en.wikipedia.org/wiki/Pink_noise

   Pink noise can be computer-generated by first generating a white noise signal, Fourier-transforming it, then dividing the amplitudes of the different frequency components by the square root of the frequency (in one dimension), or by the frequency (in two dimensions) etc. [7] This is equivalent to spatially filtering (convolving) the white noise ...

4. Grey noise - Wikipedia

   en.wikipedia.org/wiki/Grey_noise

   Grey noise spectrum The result is that grey noise contains all frequencies with equal loudness , as opposed to white noise , which contains all frequencies with equal energy . The difference between the two is the result of psychoacoustics , more specifically the fact that the human hearing is more sensitive to some frequencies than others.

5. Doctors Say This Type Of Noise Is Best For Deep Sleep - AOL

   www.aol.com/doctors-type-noise-best-deep...

   The big three in sleep sounds are white noise, brown noise, and pink noise, but there are many other noise types, including purple noise, gray noise, and even black noise (a.k.a. good ol ...

6. How to Find Your Right Noise for the Best Sleep Ever - AOL

   www.aol.com/lifestyle/noise-best-sleep-ever...

   Out of white, pink and brown noise, Dr. Sarow calls brown “the most calming.” “Brown noise can reduce stress and anxiety levels. It's a great choice for anyone feeling especially stressed or ...

7. White noise - Wikipedia

   en.wikipedia.org/wiki/White_noise

   White noise draws its name from white light, [2] although light that appears white generally does not have a flat power spectral density over the visible band. An image of salt-and-pepper noise In discrete time , white noise is a discrete signal whose samples are regarded as a sequence of serially uncorrelated random variables with zero mean ...

8. 8 white noise machines for better sleep - AOL

   www.aol.com/news/8-white-noise-machines-better...

   HoMedic’s alarm clock offers eight relaxation and nature sounds— including a white, pink, gray and brown noise option. The “sleep therapy” options play your favorite nature sound for 15 or ...

9. Flicker noise - Wikipedia

   en.wikipedia.org/wiki/Flicker_noise

   Flicker noise is a type of electronic noise with a 1/f power spectral density. It is therefore often referred to as 1/ f noise or pink noise , though these terms have wider definitions. It occurs in almost all electronic devices and can show up with a variety of other effects, such as impurities in a conductive channel, generation and ...