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  2. Perlin noise - Wikipedia

    en.wikipedia.org/wiki/Perlin_noise

    Perlin noise is a type of gradient noise developed by Ken Perlin in 1983. It has many uses, including but not limited to: procedurally generating terrain, applying pseudo-random changes to a variable, and assisting in the creation of image textures. It is most commonly implemented in two, three, or four dimensions, but can be defined for any ...

  3. Signal-to-noise ratio - Wikipedia

    en.wikipedia.org/wiki/Signal-to-noise_ratio

    The plots at the bottom show the signal intensity in the indicated row of the image (red: original signal, blue: with noise). Signal-to-noise ratio ( SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. SNR is defined as the ratio of signal power to noise power ...

  4. Colors of noise - Wikipedia

    en.wikipedia.org/wiki/Colors_of_noise

    Noise that has a frequency spectrum of predominantly zero power level over all frequencies except for a few narrow bands or spikes. Note: An example of black noise in a facsimile transmission system is the spectrum that might be obtained when scanning a black area in which there are a few random white spots. Thus, in the time domain, a few ...

  5. Burst noise - Wikipedia

    en.wikipedia.org/wiki/Burst_noise

    Burst noise is a type of electronic noise that occurs in semiconductors and ultra-thin gate oxide films. [1] It is also called random telegraph noise ( RTN ), popcorn noise, impulse noise, bi-stable noise, or random telegraph signal ( RTS) noise. It consists of sudden step-like transitions between two or more discrete voltage or current levels ...

  6. Noise floor - Wikipedia

    en.wikipedia.org/wiki/Noise_floor

    Noise floor. Measurement from a spectrum analyzer showing a noise-like measurement from an unspecified component. In signal theory, the noise floor is the measure of the signal created from the sum of all the noise sources and unwanted signals within a measurement system, where noise is defined as any signal other than the one being monitored.

  7. Noise generator - Wikipedia

    en.wikipedia.org/wiki/Noise_generator

    Noise generator. Zener diode based noise source. A noise generator is a circuit that produces electrical noise (i.e., a random signal). Noise generators are used to test signals for measuring noise figure, frequency response, and other parameters. Noise generators are also used for generating random numbers.

  8. Noise calculation - Wikipedia

    en.wikipedia.org/wiki/Noise_calculation

    Noise calculation. Noise calculation is the process of calculating the level of noise immission using the metric dB (A). Noise immission is created by noise sources (noise emission) of various types which are propagating noise into the environment. A single source will create a certain level of immission primarily driven by originating sound ...

  9. 33 top-rated Mother's Day gifts on Amazon for every type of mom

    www.aol.com/news/33-top-rated-mothers-day...

    The Raycon Everyday earbuds have a 4.3-star average rating with over 29,000 reviews on Amazon. They connect via bluetooth to devices, including smartphones and tablets, according to the brand.