Question

If the sampling rate Fs satisfies the sampling theorem, then the relation between quantization errors of analog signal(eq(t)) and discrete-time signal(eq(n)) is?

(a) eq(t)=eq(n)

(b) eq(t)<eq(n)

(c) eq(t)>eq(n)

(d) not related

The question was posed to me in an internship interview.

I want to ask this question from A2D and D2A Converters in portion DSP – Basic Signaling of Digital Signal Processing

Answer 1

Right answer is (a) eq(t)=eq(n)

To explain I would say: If it obeys sampling theorem, then the only error in A/D conversion is quantization error. So, the error is same for both analog and discrete-time signal.