Digital Signal Processing Questions and Answers
Q1.
In which of the following transformations, poles and zeros of H(s) are mapped directly into poles and zeros in the z-plane?
Answer :
Matched Z-transform
Q2.
The sampling interval in the matched z-transform must be properly selected to yield the pole and zero locations at the equivalent position in the z-plane.
Answer :
True
Q3.
Sampling interval T is selected sufficiently large to completely avoid or at least minimize the effects of aliasing.
Answer :
False
Q4.
What is the duration of the unit sample response of a digital filter?
Answer :
Infinite
Q5.
If the filter is in linear phase, then filter would have a mirror-image pole outside the unit circle for every pole inside the unit circle.
Answer :
True
Q6.
In frequency sampling method, transition band is a multiple of which of the following?
Answer :
2Ο/M
Q7.
The reconstruction of the signal from its samples as a linear filtering process in which a discrete-time sequence of short pulses (ideally impulses) with amplitudes equal to the signal samples, excites an analog filter.
Answer :
True
Q8.
In a D/A converter, the usual way to solve the glitch is to use deglitcher. How is the Deglitcher designed?
Answer :
By using a S/H circuit
Q9.
What is the term used to describe the range of an A/D converter for uni-polar signals?
Answer :
Full scale
Q10.
If the signal αΊ(t) can be viewed as the output of the filter with impulse response h(t) = 1/Οt, -∞ < t < ∞ when excited by the input signal x(t) then such a filter is called as ____
Answer :
Hilbert transformer
πππ
πππ
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