Digital Signal Processing Questions and Answers
Q1.
For what kind of signals one sided z-transform is unique?
Answer :
Causal signal
Q2.
Sampling rate conversion by the rational factor I/D is accomplished by what connection of interpolator and decimator?
Answer :
Cascade
Q3.
If a system is said to be invertible, then?
Answer :
One-to-one correspondence between its input and output signals
Q4.
The ‘Envelope delay’ or ‘Group delay’ is the time delay that the signal component of frequency ω undergoes as it passes from the input to the output of the system.
Answer :
True
Q5.
For a signal x(n) to exhibit even symmetry, it should satisfy the condition |X(-ω)|=| X(ω)|.
Answer :
True
Q6.
What is the frequency range(in Hz) of Electroencephalogram(EEG)?
Answer :
0-100
Q7.
Which of the following is the advantage of Hanning window over rectangular window?
Answer :
Less side lobes
Q8.
Which of the following is true in case of Overlap add method?
Answer :
M-1 zeros are appended at last of each data block
Q9.
The 4N quantization errors are mutually uncorrelated.
Answer :
True
Q10.
What is the transform that is suitable for evaluating the z-transform of a set of data on a variety of contours in the z-plane?
Answer :
Chirp-z transform
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