Gaussian noise


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Gaussian noise

[¦gau̇·sē·ən ′nȯiz]
(communications)
Noise that has a frequency distribution which follows the Gaussian curve.
(mathematics)

Gaussian noise

(1) In communications, a random interference generated by the movement of electricity in the line. It is similar to white noise, but confined to a narrower range of frequencies. You can actually see and hear Gaussian noise when you tune your TV to a channel that is not operating. Contrast with white noise and pink noise. See Gaussian distribution and Gaussian blur.

(2) A random distribution of artifacts in analog video images that makes everything look soft and slightly blurry. On close inspection, one can see tiny specks in random patterns. Found on films shot with older cameras as well as films and videotapes that have been archived for a long time, dynamic noise reduction (DNR) circuits can eliminate much of the Gaussian noise when the analog material is converted to digital. See dynamic noise reduction.
References in periodicals archive ?
In order to evaluate Gaussian noise removal technique, images are corrupted by Gaussian noise with different variance ([sigma]=20 and [sigma]=40).
NL-means works well to remove Gaussian noise and also can preserve image details very well.
Simulation result shows the bit error rate (BER) of horizontal coded LST architecture OFDM system having 32 sub-carriers, with two transmit and two receive antennas over a Rayleigh fading with additive white Gaussian noise (AWGN) channel.
Nasdaq:NOIZ) announced the introduction of its ANG series of automated white gaussian noise generators designed for testing a wide range of wireless communication products.
It is further validation of our strategy to supply MicroCalTM calibration and built-in calibration devices utilizing techniques developed through Gaussian noise technology developed at Micronetics.
It also exceeds all IS-97 and IS-98 requirements for Additive White Gaussian Noise (AWGN) testing.
Considering this method as an unsupervised, it can be directly applied to images and resolve issues related to removing Gaussian noise.
Waveforms (including, but not limited to the following): sine, square, pulse, triangle, Gaussian noise, DC, exponential fall, exponential rise, Lorentz, sine
Noise power ratio (NPR) testing traditionally consists of a broadband Additive White Gaussian Noise (AWGN) source covering the entire bandwidth to be tested, and a deep, narrow notch filter somewhere within this bandwidth (typically 10% or less of the total bandwidth).
The common noise includes gaussian noise, index noise, uniform noise and impulse noise.
The noise models we consider are the additive white Gaussian noise (AWGN) and the additive white uniform noise (AWUN), whose probability density functions are, respectively,

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