Correct Answer:
The digital information generated about a person by organizations
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2. In the accompanying figure, the text ?click to add title? is the title ____.
Answer
Correct Answer:
Placeholder point
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3. A(n) ____ signal is designed to represent computer data in a discrete high (on) or low (off) state.
Answer
Correct Answer:
Digial
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4. A digital signal composed of a pulse of positive voltage represents a(n) ____.
Answer
Correct Answer:
1
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5. The aliasing problem can be better handled by the__________.
Answer
Correct Answer:
Quardature Mirror Filter (QMF)
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6. The Kaiser window design is used for ____________.
Answer
Correct Answer:
F.I.R. filters
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7. Which of the following is a linear system?
Answer
Correct Answer:
y ( n ) = n x ( n )
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8. Anti-aliasing filter is basically a________.
Answer
Correct Answer:
low pass filter
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9. The overlap save method is for the ___________.
Answer
Correct Answer:
filtering of signals
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10. In a Butterworth low pass filter, we get a maximally flat response of ___________.
Answer
Correct Answer:
Pass Band
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11. The ARMA Linear Model is a __________.
Answer
Correct Answer:
parametric method
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12. A stationary random process is a_________.
Answer
Correct Answer:
infinite energy signal
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13. The condition of periodicity for a continuous time signal can be defined mathematically as _______. (Note: Here "To" is the fundamental period.)
Answer
Correct Answer:
x ( t ) = x ( t + To )
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14. The Z-Transform is used to analyze ____________.
Answer
Correct Answer:
discrete time signals
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15. Which of the following is a time invariant system?
Answer
Correct Answer:
y ( n ) = x ( 2 n )
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16. A discrete time signal can be best analyzed by____________.
Answer
Correct Answer:
a Z- Transform
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17. Which one of the following is not a universal register of the ADSP21XX family?
Answer
Correct Answer:
Multiplier Results (MR)
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18.
The sampling theorem holds true for the following condition________. (Note: Here 'fs' is the sampling frequency, and 'w' is the maximum frequency of the continuous time signal x (t)).
Answer
Correct Answer:
fs > 2 ω
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19. The ALU of the ADSP 21XX family has two input ports named __________.
Answer
Correct Answer:
X and Y
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20. The signal cos(0.01πn) is_________.
Answer
Correct Answer:
periodic
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21. In Multirate Digital Signal Processing, the sampling rate of signals __________.
Answer
Correct Answer:
is either increased or decreased
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22. The term "filter" is used to describe a ___________.
Answer
Correct Answer:
linear time invariant system
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23. Which of the following systems is unstable?
Answer
Correct Answer:
None of the above
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24. The Flanging effect is a ____________.
Answer
Correct Answer:
sound effect
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25. The non-parametric methods for power spectrum estimation suffer from________.
Answer
Correct Answer:
spectrum leakage effects
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26. The circular frequency shift property is also known as __________.
Answer
Correct Answer:
the quadrature modulation theorem
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27. For the signal x ( t ) = 3cos600πt + 2cos1800πt , the folding frequency is __________.
Answer
Correct Answer:
500 Hz
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28. In a Butterworth approximation for bilinear transformation, we have,
Answer
Correct Answer:
Ω= 2 / Ts tan ωc / 2
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29. DFT is obtained from DTFT by putting____________.
Answer
Correct Answer:
W = 2πK / N
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30. An analog filter is stable if the poles lie ________________.
Answer
Correct Answer:
on the L.H.S. of the S-Plane
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31. Power signals are the signals having ________.
Answer
Correct Answer:
finite non zero power
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32. Comb Filters can be viewed as ___________.
Answer
Correct Answer:
notch filters
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33. The ADSP-21XX family supports __________.
Answer
Correct Answer:
a 24-bit instruction word
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34. Linear predictive coding is normally used to achieve __________.
Answer
Correct Answer:
speech synthesis
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35. Any arbitrary signal can be expressed as the sum of two signals. These two signals must be_________.
Answer
Correct Answer:
even and odd signals
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36. Digital Transmultiplexers are devices for converting ___________.
Answer
Correct Answer:
TDM to FDM
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37. The frequency warping effect occurs because of___________.
Answer
Correct Answer:
non-linear mapping
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38. The MUSIC ( Multiple Signal Classification ) method is used for ____________.
Answer
Correct Answer:
estimation of noise frequency
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39. How many stages of FFT algorithm are there for an 8-Point DFT?
Answer
Correct Answer:
Three
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40. The parametric methods for Power Spectrum Estimation provide __________.
Answer
Correct Answer:
better frequency resolution
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41. The process of reducing the sampling rate by a factor D is called ___________.
Answer
Correct Answer:
Decimation
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42. The finite impulse response ( F.I.R ) filters are also called_________.
Answer
Correct Answer:
non-recursive filters
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43. The Harvard Architecture referred to the computer architectures that used _____________.
Answer
Correct Answer:
separate data storages for instructions and data
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44. What is the function of a Fourier Transform?
Answer
Correct Answer:
It converts the time domain signal into the frequency domain signal
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45. The ADSP-2100A has ____________.
Answer
Correct Answer:
no on-chip memory
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46. A continuous time signal is also known as a/an_______.
Answer
Correct Answer:
analog signal
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47. The type-1 chebyshev filter contains __________.
Answer
Correct Answer:
all poles
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48. Which of the following is a non-causal system?
Answer
Correct Answer:
y ( n ) = cos x ( n )
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49. In DFT equation, the symbol for circularly even sequence is _________.
Answer
Correct Answer:
x ( N-n ) = x ( n )
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50. Interfacing of digital systems with different sampling rates can be done efficiently by __________.
Answer
Correct Answer:
both reduction and interpolation of the sampling rate
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51. In order to avoid aliasing during the reduction of the sampling rate, we divide the sampling frequency by ___________.
Answer
Correct Answer:
2D
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52. Signals that are statistically stationary can be better estimated with _________.
Answer
Correct Answer:
Long data record
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53. Which one of the following is a static system?
Answer
Correct Answer:
y ( n ) = n x ( n )
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54. The fundamental period of signal 10sin(12πt) + 4sin(18πt) is______.
Answer
Correct Answer:
1/3 Sec
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55. Quantization of a signal_____________.
Answer
Correct Answer:
reduces bandwidth requirement
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56. MAC is used for ___________.
Answer
Correct Answer:
high speed multiplication
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57. The condition of periodicity for a discrete time signal can be defined mathematically as ________. (Note: Here Number "N" is the period of the signal.)
Answer
Correct Answer:
x ( n ) = x ( n + N )
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58. Continuous time signals have_____________.
Answer
Correct Answer:
aperiodic spectra
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59. Digital F.I.R. filters are so designed that they have linear phase characteristics in the _____________.
Answer
Correct Answer:
pass band
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60. Which one of the following is not a register associated with the Program Sequencer?
Answer
Correct Answer:
System Register
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61. A continuous time signal is said to be symmetrical or even if it satisfies the condition, _________.
Answer
Correct Answer:
x ( t ) = x ( -t )
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62. The multiplication of two DFTs is equivalent to the circular convolution of their sequences in the _____________.
Answer
Correct Answer:
time domain
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63. Environmental parameters like temperature, humidity etc. change the performance of __________.
Answer
Correct Answer:
analog filters only
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64. Sampling rate conversion by the rational number ( I / D = 1023 / 511 ) needs a polyphase filter with _________.
Answer
Correct Answer:
1023 subfilters
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65. In order to design digital filter, an important condition is that, the response of filter should ___________.
Answer
Correct Answer:
causal
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66. How many clock cycles are required by the DSP processor to execute an instruction?
Answer
Correct Answer:
One
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67. The Discrete Fourier Transform ( DFT ) of unit impulse function is__________.
Answer
Correct Answer:
1
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68. A non-periodic signal has a period ( T ) of _______.
Answer
Correct Answer:
T = ∞ T = 0
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69. In DFT, a circularly folded sequence is denoted by_________.
Answer
Correct Answer:
x (( -n ))
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70. If a Z-Transform is evaluated on the unit circle at evenly spaced points only, it becomes __________.
Answer
Correct Answer:
DFT
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71. For the signal x ( t ) = 3cos50πt + 10sin300πt – cos100πt , nyquist rate is________.
Answer
Correct Answer:
100 Hz
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72. Thermal noise can be considered to be ___________.
Answer
Correct Answer:
white Gaussian noise
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73. The periodogram is _________.
Answer
Correct Answer:
not a consistent estimate of the true power density spectrum
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