Nyquist sampling

Nyquist sampling

[′nī‚kwist ‚sam·pliŋ]
(communications)
The periodic sampling of audio or video signals, in order to preserve their information content, at a rate equal to twice the highest frequency to be preserved.
References in periodicals archive ?
where P is the device power, ENOB = effective number of bits, and B is the signal bandwidth (hence 2B is the Nyquist sampling rate).
The output will then typically be digitized, but at a rate commensurate with the estimation update, which may be orders of magnitude less than the corresponding Nyquist sampling rate matched to the original signal bandwidth.
s] must be greater than or equal to the Nyquist sampling rate fS to avoid loss of information in the sampled signal, where the Nyquist sampling rate is equal to twice that of the highest frequency component, [f.
According to classical signal processing theory, the required signal bandwidth W and the Nyquist sampling rate are constrained by the condition W = [eta]/2, where W and [eta] are the bandwidth and sampling rate respectively.
According to nyquist sampling criteria, the maximum value of low pass output frequency, [F.
1 have resulted in a new confocal algorithm better tuned to images where proper Nyquist sampling or over-sampling is used.
InVivo Analyzer Suite also supports automatic calculation of Nyquist sampling for 3D acquisition.
The technology enables alias-free Nyquist sampling, which means that anti-aliasing filters are not needed, so system cost is reduced.
According to Nyquist Sampling Theorem, one of the most important rules of sampling, the highest frequency which can be accurately represented, is one-half of the sampling rates.
The high performance of the 40MSPS TSA1203 is reflected in typical dynamic specifications that include an effective number of bits (ENOB) of 11 at the Nyquist sampling rate, a spurious-free dynamic range (SFDR) of 78dBc at 10MHz input, and a signal to noise and distortion ratio (SINAD) of 68dB.