What Does Nyquist Frequency Mean?

The Nyquist frequency is a type of sampling frequency that uses signal processing that is defined as “half of the rate” of a discrete signal processing system. It is the highest frequency that can be coded for a particular sampling rate so that the signal can be reconstructed.

Techopedia Explains Nyquist Frequency

The Nyquist frequency refers to the point where it is possible to build a visual model of a signal. This goes back to a concept in discrete time sampling called “aliasing.” The idea here is that two samples per cycle are needed in order to sufficiently demonstrate a signal. This idea is called the “Nyquist theorem.” Developers and engineers look at issues with sampling, including undersampling and oversampling, to try to optimize waveforms and sampling for signal processing efforts.