Nyquist frequency — Not to be confused with Nyquist rate. Frequencies above ƒs/2 (the Nyquist frequency) have an alias below ƒs/2, whose value is given by this graph. ƒs/2 is also called folding frequency, because of the symmetry between 0 and ƒs. The Nyquist… … Wikipedia
Nyquist frequency — noun (telecommunication) twice the maximum frequency occurring in the transmitted signal • Topics: ↑telecommunication, ↑telecom • Hypernyms: ↑sampling frequency … Useful english dictionary
Nyquist — is a surname of Swedish and Norwegian origin which may refer to: People Arild Nyquist (1937–2004), Norwegian novelist, lyricist, writer and musician Harry Nyquist (1889–1976), Swedish American engineer Kari Nyquist (born 1918), Norwegian ceramist … Wikipedia
Nyquist–Shannon sampling theorem — Fig.1: Hypothetical spectrum of a bandlimited signal as a function of frequency The Nyquist–Shannon sampling theorem, after Harry Nyquist and Claude Shannon, is a fundamental result in the field of information theory, in particular… … Wikipedia
Nyquist rate — Not to be confused with Nyquist frequency. Spectrum of a bandlimited signal as a function of frequency In signal processing, the Nyquist rate, named after Harry Nyquist, is two times the bandwidth of a bandlimited signal or a bandlimited channel … Wikipedia
Frequency response — is the measure of any system s spectrum response at the output to a signal of varying frequency (but constant amplitude) at its input. In the audible range it is usually referred to in connection with electronic amplifiers, microphones and… … Wikipedia
Nyquist ISI criterion — Raised cosine response meets the Nyquist ISI criterion. Consecutive raised cosine impulses demonstrate the zero ISI property between transmitted symbols at the sampling instants. At t=0 the middle pulse is at its maximum and the sum of other… … Wikipedia
Nyquist filter — A Nyquist filter is an electronic filter used in TV receivers to equalize the video characteristics. The filter is named after the Swedish–US engineer Harry Nyquist (1889–1976). Contents 1 VSB 2 Example of a VSB 3 Demodulation problems … Wikipedia
Nyquist stability criterion — The Nyquist plot for . When designing a feedback control system, it is generally necessary to determine whether the closed loop system will be stable. An example of a destabilizing feedback control system would be a car steering system that… … Wikipedia
Nyquist, Harry — ▪ American physicist born Feb. 7, 1889, Nilsby, Sweden died April 4, 1976, Harlingen, Texas, U.S. American physicist and electrical and communications engineer, a prolific inventor who made fundamental theoretical and practical… … Universalium
Nyquist plot — A Nyquist plot. A Nyquist plot is a parametric plot of a transfer function used in automatic control and signal processing. The most common use of Nyquist plots is for assessing the stability of a system with feedback. In Cartesian coordinates,… … Wikipedia
