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The relation between analog frequency ‘F’ and digital frequency ‘f’ is?

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The relation between analog frequency ‘F’ and digital frequency ‘f’ is?

(a) F=f*T(where T is sampling period)

(b) f=F*T

(c) No relation

(d) None of the mentioned

The question was posed to me during an online exam.

The question is from A2D and D2A Converters in division DSP – Basic Signaling of Digital Signal Processing

1 Answer

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Correct choice is (b) f=F*T

Explanation: Consider an analog signal of frequency ‘F’, which when sampled periodically at a rate Fs=1/T samples per second yields a frequency of f=F/Fs=>f=F*T.

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