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Definition of "Nyquist" |
In A/D conversion, the Nyquist principle (derived from the Nyquist-Shannon sampling theorem) states that the sampling rate must be at least twice the maximum bandwidth of the analog signal in order to allow the signal to be reproduced. The maximum bandwidth of the signal (half the sampling rate) is commonly called the Nyquist frequency (or Shannon sampling frequency). In real life, sampling rate must be higher than that (because filters are not perfect). As an example, the bandwidth of a standard audio CD is a bit shy of the theoretical maximum of 22.05kHz (based on the sample rate of 44.1kHz). / A theorem that determines the minimum sampling rate of a signal. See Nyquist Sampling Rate Object Code. The output from a complier. / In A/D conversion, the Nyquist principle states that the sampling rate must be at least twice the maximum bandwidth of the analog signal in order to allow the signal to be reproduced. The maximum bandwidth of the signal is commonly called the Nyquist frequency. In real life, sampling rate must be higher than that. As an example, the bandwidth of a standard audio CD is a bit shy of the theoretical maximum of 22.05kHz. |
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