Digital Signal Processing Questions and Answers
Q1.
What kind of filter is an ideal Hilbert transformer?
Answer :
All pass
Q2.
In this section, we confine our attention on the design of FIR Hilbert transformers with h(n)=-h(M-1-n).
Answer :
True
Q3.
The ideal differentiator ahs which of the following unit sample response?
Answer :
Anti-symmetric
Q4.
We need not relate the spectrum of y(m) to spectrum of x(n) to obtain frequency response characteristic of y(m).
Answer :
False
Q5.
The filter designs that contain maximum number of alternations are called as _____
Answer :
Maximal ripple filters
Q6.
If the filter has symmetric unit sample response with M even, then what is the value of Q(ω)?
Answer :
cos(ω/2)
Q7.
At most how many extremal frequencies can be there in the error function of ideal low pass filter?
Answer :
L+3
Q8.
In Parks-McClellan program, the grid density for interpolating the error function is denoted by which of the following functions?
Answer :
LGRID
Q9.
Which of the following is introduced in the frequency sampling realization of the FIR filter?
Answer :
Poles and zeros at equally spaced points on the unit circle
Q10.
What is the peak side lobe (in dB) for a Hanning window?
Answer :
-32
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