1.The energy of the discrete time signal x(n) as -----------
2.The number of butterflies stage to calculate 16 point DIT-FFT -------
3. The Z transform of impulse function ---------
4.The value of W8^0----------------
5.y(n)=ax(n) is ----------dynamic/static
6.DFT(x(n-m))---------------
7.Determine the fundamental period of the signal x(n)=e^6Πn---------
8.y(n)=ax(n) is stable /unstable-----------
9.Number of complex multiplications required to calculate N point DFT is----
10.Find the linear convolution of sequence x(n)={1,0.5} and h(n)={0.5,1}--------
11.DFS is used to find the frequency spectrum of ---------signals
12.Find the DFT of the sequence x(n)={1,0,0,1}-------------
13.DTFT(e^jwnx(n))-------------------
14.Determine the system function described by the equation y(n)+y(n-1)=x(n)-----------
15.Discrete time system stable if the poles are located -------
16.DTFT(δ(n+2) – δ(n-2))---------
17.y(n)=x(n^2) is causal or non causal----------
18.DFT(x(-n))N---------------
19.Find the ROC of the signal x(n)=u(n-2)------
20. Find the linear convolution of sequencesx1n)={1,2}and x2(n)={3,4}----
21.Two signals x1(n)={1,2,3,4}x2(n)={4,3,2,1} find x1(n)+x2(n)----------
22.Numbver of complex additions required to calculate Radix-2 FFT is------
23.x(n) is discrete time signal x(n+N) is ---------
24.The particular solution is also called ----------
25.A signal which is a function of single independent variable is called -----signal
26.Calculate the frequency response of LTI system h(n)= δ(n) – δ(n-1))---------
27.What is the order of the system y(n)-ay(n-1)=x(n)------
28.Compute the 8 point DFT of the sequence x(n)=1 0≤n≤7---------
29.if x(n ) is periodic with period N DFS (e^j2Πln/N)-----
30.Calculate the number of additions needed in 64 FFT equence------
31.What is zero padding ----------
32.Compute 4 point DFTof sequence x(n)={0,1,2,3}-------
33.y(n)=cos x(n) is stable or unstable ------
34.The Z transform of u(n)-----
35.DFTT(x(n-K))------
36.y(n)=cos(x(n)) is linear or nonlinear----------
37.The value of W8^1--------
38.What is the difference between DFT and DTFT in the frequency domain--------
39.Determine the order of the system y(n)-y(n-1)-y(n-2)=x(n)------
40. Calculate the number of multiplications needed in the calculation of DFT using FFT algorithm with 128 point------
41.y(n)=nx(n) is time variant 0r time invariant------
42.x(n)*(h1(n)+h2(n))-----
43.A first order LTI system will behave as a-----
44.In DIT Radix-2 FFT what is the name of the domain to be decimated----
45.Find the IDFT of X(k)={1,0,1,0}-------
46.The periodic response of discrete time system is periodic with period of-------
47.The value of W8^2-------
48.DFT(x1(n)*x2(n))---------
49.The Z transform of x(n)------
50.The number of stages required to calculate 16 point DIT-FFT----
DSP KEY
1. ∑ (-∞ to +∞) lx(n)l^2 45. {0.5, 0, 0.5, 0}
2. EIGHT 46. 2Π
3. 1 47. -j
4. 1 48. X1(k) X2(k)
5. DYNAMIC 49. ∑ (-∞ to +∞) x (n) Z^-n
6. exp(-j2Πm) X(k) 50. Four Stages
7. 1
8. STABLE
9. N square
10. {0.5, 1.25, 0.5}
11. PERIODIC
12. {2, 1+j, 0, 1-j}
13. X (exp (jW – jWo)
14. 1/1+aZ^-1
15. WITH IN THE UNIT CIRCLE
16. 2j sin W
17. Non-Causal
18. x(N-K)
19. lzl > 1
20.{3,10,8}
21. {5,5,5,5}
22. N log N (base=2)
23. Periodic
24. Forced Response
25. One Dimensional
26. 1-exp (-jw)
27. 1
28. {8, 0, 0, 0, 0, 0, 0, 0}
29. X (K-L)
30. 384
31. Adding Zeros to a Sequence.
32. {6, -2+2j, -2, -2-2j}
33. Unstable.
34. z/z-1
35. exp(-j2Πnk) X(k)
36. Non Linear
37. 0.707-j0.707
38. DTFT is Continuous where as DFT is Sequence
39. Second Order
40. 448
41. Time-Variant
42. x (n) h1 (n) +x (n) h2 (n))
43. Low Pass
44. Time
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