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  2. 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.

  3. OSI model - Wikipedia

    en.wikipedia.org/wiki/OSI_model

    The model allows transparent communication through equivalent exchange of protocol data units (PDUs) between two parties, through what is known as peer-to-peer networking (also known as peer-to-peer communication). As a result, the OSI reference model has not only become an important piece among professionals and non-professionals alike, but ...

  4. Gaussian noise - Wikipedia

    en.wikipedia.org/wiki/Gaussian_noise

    In telecommunications and computer networking, communication channels can be affected by wideband Gaussian noise coming from many natural 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 and other warm objects, and from ...

  5. 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 ...

  6. Models of communication - Wikipedia

    en.wikipedia.org/wiki/Models_of_communication

    Many models of communication include the idea that a sender encodes a message and uses a channel to transmit it to a receiver. Noise may distort the message along the way. The receiver then decodes the message and gives some form of feedback. [1] Models of communication simplify or represent the process of communication.

  7. Telecommunications - Wikipedia

    en.wikipedia.org/wiki/Telecommunications

    The OSI reference model. The Internet is a worldwide network of computers and computer networks that communicate with each other using the Internet Protocol (IP). [91] Any computer on the Internet has a unique IP address that can be used by other computers to route information to it. Hence, any computer on the Internet can send a message to any ...

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  9. Signal-to-interference-plus-noise ratio - Wikipedia

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

    In information theory and telecommunication engineering, the signal-to-interference-plus-noise ratio (SINR [1]) (also known as the signal-to-noise-plus-interference ratio (SNIR) [2]) is a quantity used to give theoretical upper bounds on channel capacity (or the rate of information transfer) in wireless communication systems such as networks ...