Digital Signal Processing Laboratory Viva Questions - Part 10

Q.1- Filters with the ________ characteristic are useful when a rapid roll-off is required because it provides a roll-off rate greater than –20/dB/decade/pole.

1. Butterworth
2. Chebyshev
3. Both Butterworth and Chebyshev
4. None of the above

Digital Signal Processing Laboratory Viva Questions - Part 9

Q.1- How many real and complex multipliers are required to implement 8 point radix-2 FFT algorithm.

1. 12 & 48
2. 48 &12
3. 64 &56
4. 12 &64
   
   

Digital Signal Processing Laboratory Viva Questions - Part 8

Q.1- A linear phase channel with phase delay T_p and group delay T_g must have

1. T_p = T_g = constant
2. T_p ∝ f and T_g ∝ f
3. T_p = constant and T_g ∝ f
4. T_p ∝ f and T_g = constant

Digital Signal Processing Laboratory Viva Questions - Part 7

Q.1- If Z0 and 1/Z0 are two poles of H(Z). h(n) is stable system when h(n) is
(a) Left sided sequence
(b) right sided sequence
(c) two sided sequence
(d)  anything

Digital Signal Processing Laboratory Viva Questions - Part 6

Statement for Q.1-2:
      Given the Z transform pair 
                       
Determine the time signal y(n) for corresponding z-transform Y(z) and choose the correct answer.
  
Q.1- Y(z) = X(2z)
a)
b)
c)
d)

Digital Signal Processing Laboratory Viva Questions - Part 5

Q.1-   Determine the DTFT for the given signal and choose correct option.
a)
b)
c)
d) None of the above

Digital Signal Processing Laboratory Viva Questions - Part 4

Q.1-
a) Periodic with period 4
b) Periodic with period 8
c) Periodic with period 16
d) Not periodic

Digital Signal Processing Laboratory Viva Questions - Part 3

Q.1- How are unwanted frequencies removed prior to digital conversion?

1. Pre-filters
2. Digital signal processing
3. Sample-and-hold circuits
4. All of the above

Digital Signal Processing Laboratory Viva Questions - Part 2

Q.1- Consider a causal system H(Z), H(Z)=1/H1(Z), where H1(Z) realizable (linear phase FIR filter), h1(n) ↔ H1(Z)
If we want stable system H(Z), then
(i) h1(n) is type-1 (h1(n) is odd length, symmetric)
(ii) h1(n) is type-2 (h1(n) is even length, symmetric)
(iii) h1(n) is type-3 (h1(n) is odd length, anti-symmetric)
(iv) h1(n) is type-4 (h1(n) is even length, anti-symmetric)

Digital Signal Processing Laboratory Viva Questions - Part 1

Theory_Questions:

Q.1-find the DFT of  x(n)={1,1,1,1,1,1,1,1}
a) {8,-1,0,0,-1,0,0,0}
b) {8,0,2,0,0,0,0,0}
c)  {8,0,0,0,0,0,0,0}
d)  {8,1,0,0,1,0,0,0}
e) None of the above