Digital Signal Processing Questions and Answers
Q1.
Which of the following operation has to be performed to increase the sampling rate by an integer factor I?
Answer :
Interpolating I-1 new samples
Q2.
Where does the poles of the transfer function of normalized low pass Butterworth filter exists?
Answer :
On unit circle
Q3.
What is the cutoff frequency of a normalized filter?
Answer :
1 rad/sec
Q4.
We cannot choose any arbitrary function for the errors in magnitude and delay.
Answer :
False
Q5.
Wiener filter is an FIR least-squares inverse filter.
Answer :
True
Q6.
What should be the desired response for an optimum wiener filter to be an approximate inverse filter?
Answer :
δ(n)
Q7.
The foregoing approach for determining the poles and zeros of H(z) is sometimes called Prony’s method.
Answer :
True
Q8.
The degree to which the design technique produces acceptable filter designs depends in part on the number of filter coefficients selected.
Answer :
True
Q9.
The unit circle must be mapped outside the unit circle.
Answer :
False
Q10.
In which of the following transformations, it doesn’t matter whether the frequency transformation is performed in the analog domain or in frequency domain?
Answer :
Bilinear transformation
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