Encyclopedia: NYQ...

Encyclopedia : N : NY : NYQ (36 articles)

NyQuil
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Nyquist
Nyquist can refer to: Harry Nyquist — engineer who developed theory of signaling rate per bandwidthNyquist frequencyJohnson–Nyquist noise — sometimes called the Nyquist relation.Nyquist–Shannon sampling theoremNyquist plotNyquist stability criterionNyquist ISI criterionNyquist (programming ..

Nyquist (programming language)
Nyquist is a programming language for sound synthesis and analysis based on the Lisp programming language. It is an extension of the XLISP dialect of Lisp. With Nyquist, you design musical instruments by combining functions. You can call upon these instruments and generate a sound just by typing a ..

Nyquist frequency
Not to be confused with Nyquist rate. The Nyquist frequency, named after Harry Nyquist or the Nyquist–Shannon sampling theorem, is half the sampling frequency of a discrete signal processing system. It is sometimes called the critical frequency. The sampling theorem tells us that aliasing can be ..

Nyquist ISI criterion
In any kind of modulation that uses several different symbols to carry the information (such as ASK, QAM, PSK, etc.), those symbols are sent modulating the amplitude of a certain signal called carrier. These carriers can not be ideal impulses, so they will last a non-null time, that can be quite l..

Nyquist plot
A Nyquist plot is used in automatic control and signal processing for assessing the stability of a system with feedback. It is represented by a graph in polar coordinates in which the gain and phase of a frequency response are plotted. The plot of these phasor quantities shows the phase as the ang..

Nyquist rate
Not to be confused with Nyquist frequency. 240px In signal processing, the Nyquist rate is two times the bandwidth—but this concept has two rather different meanings: as a lower bound for the sample rate for alias-free signal sampling, and as an upper bound for the signaling rate across a ba..

Nyquist stability criterion
The Nyquist stability criterion, named for Harry Nyquist, provides a simple test for stability of a closed-loop control system by examining the open-loop system's Nyquist plot. Stability of the closed-loop control system may be determined directly by computing the poles of the closed-loop transfer f..

Nyquist–Shannon sampling theorem
The Nyquist–Shannon sampling theorem is a fundamental result in the field of information theory, in particular telecommunications and signal processing. The theorem is commonly called Shannon's sampling theorem, and is also known as Nyquist–Shannon–Kotelnikov, Whittaker–Shannon–Kotelniko..

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