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nyquist frequency

/ˈnaɪkwɪst ˈfriːkwənsi/

Traduction: Fréquence d'échantillonnage minimale nécessaire pour représenter fidèlement un signal continu sans perte d'information ni repliement spectral (aliasing), nommée d'après Harry Nyquist.

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/ˈnaɪkwɪst ˈfriːkwənsi/C1formaltechnical
  • frFréquence d'échantillonnage minimale nécessaire pour représenter fidèlement un signal continu sans perte d'information ni repliement spectral (aliasing), nommée d'après Harry Nyquist.

A fundamental concept in signal processing and information theory, named after Harry Nyquist. It refers to the minimum sampling rate required to accurately capture a continuous signal without losing information or introducing distortion (aliasing).

  1. Sampling theory conceptC2formal

    The highest frequency that can be accurately represented when sampling a continuous signal, equal to half the sampling rate.

    frfréquence de Nyquist

    • To avoid aliasing, the signal must be sampled at a rate greater than twice the Nyquist frequency.
    • The Nyquist frequency is a fundamental concept in digital signal processing.
    • Engineers ensure the sampling rate is above the Nyquist frequency to preserve signal integrity.