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2. Noise generator - Wikipedia

   en.wikipedia.org/wiki/Noise_generator

   There is excess noise (i.e., noise over and above the simple shot noise) because there is avalanche multiplication. For higher power output noise generators, amplification is needed. For broadband noise generators, that amplification can be difficult to achieve. One method uses avalanche multiplication within the same barrier that generates the ...

3. White noise machine - Wikipedia

   en.wikipedia.org/wiki/White_noise_machine

   Most modern white noise generators are electronic, usually generating the sound in real-time with audio test equipment, or via electronic playback of a digital audio recording. Simple mechanical machines consist of a very basic setup, involving an enclosed fan and, optionally, a speed switch.

4. 8 white noise machines for better sleep - AOL

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

   This simple white noise machine offers ten fan sounds and ten ambient noise variations (including white, pink and brown noise). It is powered by either AC or USB and you can adjust the volume with ...

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

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

   Smart White Noise Machine. With 10 volume settings and thousands of positive reviews, this white noise machine from SNOOZ is anything but a snoozefest—and it comes with an easy-to-use app for ...

6. 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 ...

7. White, brown and pink noise machines are going viral for ...

   www.aol.com/news/white-brown-pink-noise-machines...

   Brown noise, also called red noise, is more intense at lower frequencies, which produces a deep, rumbling sound, says Harris — think more bass and less static than white noise.