Noise in sampling

Q.  The sampling technique having the minimum noise interference is
- Published on 16 Oct 15

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

ANSWER: 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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