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2. White noise - Wikipedia

   en.wikipedia.org/wiki/White_noise

   Noise having a continuous distribution, such as a normal distribution, can of course be white. It is often incorrectly assumed that Gaussian noise (i.e., noise with a Gaussian amplitude distribution – see normal distribution ) necessarily refers to white noise, yet neither property implies the other.

3. Gaussian noise - Wikipedia

   en.wikipedia.org/wiki/Gaussian_noise

   In signal processing theory, Gaussian noise, named after Carl Friedrich Gauss, is a kind of signal noise that has a probability density function (pdf) equal to that of the normal distribution (which is also known as the Gaussian distribution). [1] [2] In other words, the values that the noise can take are Gaussian-distributed.

4. Additive white Gaussian noise - Wikipedia

   en.wikipedia.org/wiki/Additive_white_Gaussian_noise

   Gaussian because it has a normal distribution in the time domain with an average time domain value of zero (Gaussian process). Wideband noise comes from many natural noise sources, such as the thermal vibrations of atoms in conductors (referred to as thermal noise or Johnson–Nyquist noise ), shot noise , black-body radiation from the earth ...

5. Normal distribution - Wikipedia

   en.wikipedia.org/wiki/Normal_distribution

   The simplest case of a normal distribution is known as the standard normal distribution or unit normal distribution. This is a special case when μ = 0 {\textstyle \mu =0} and σ 2 = 1 {\textstyle \sigma ^{2}=1} , and it is described by this probability density function (or density): φ ( z ) = e − z 2 2 2 π . {\displaystyle \varphi (z ...

6. Noise (electronics) - Wikipedia

   en.wikipedia.org/wiki/Noise_(electronics)

   Thermal noise is approximately white, meaning that its power spectral density is nearly equal throughout the frequency spectrum. The amplitude of the signal has very nearly a Gaussian probability density function. A communication system affected by thermal noise is often modelled as an additive white Gaussian noise (AWGN) channel.

7. 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 ...

8. Noise (spectral phenomenon) - Wikipedia

   en.wikipedia.org/wiki/Noise_(spectral_phenomenon)

   White noise, which has constant power spectral density; Gaussian noise, with a probability density function equal to that of the normal distribution; Pink noise, with spectral density inversely proportional to frequency; Brownian noise or "brown" noise, with spectral density inversely proportional to the square of frequency

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