Noise in sampling

The sampling technique having the minimum noise interference is


a) Instantaneous sampling
b) Natural sampling
c) Flat top sampling
d) All of the above

Correct Answer: b) Natural sampling


The natural sampling is the technique that has the minimum noise interference to the sampled signal. It is obtained by multiplying the input signal with the sampling function. It is a practical method used for sampling of signals. Chopping principle is used to sample the signal in natural sampling and it satisfies the Nyquist criteria for sampling of signals.
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