Noise in sampling

The sampling technique having the minimum noise interference is

Options:

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

Correct Answer: b) Natural sampling


Explanation:

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.