Digital Signal Processing Quiz (2017-18)
- 1.The DFT is preferred for1) Its ability to determine the frequency component of the signal2) Removal of noise3) Filter design4) Quantization of signal
- A.
A. 1, 2 and 3 are correct
- B.
B. 1 and 2 are correct
- C.
C. 1 and 3 are correct
- D.
D. All the four are correct
- 2.FFT may be used to calculate1) DFT2) IDFT3) Direct Z transform4) In direct Z transform
- A.
1, 2 and 3 are correct
- B.
1 and 2 are correct
- C.
1 and 3 are correct
- D.
All the four are correct
- 3.DIT algorithm divides the sequence into
- A.
Positive and negative values
- B.
Even and odd samples
- C.
Upper higher and lower spectrum
- D.
Small and large samples
- 4.The computational procedure for Decimation in frequency algorithm takes
- A.
Log2 N stages
- B.
2Log2 N stages
- C.
Log2 N2 stages
- D.
Log2 N/2 stages
- 5.The transformations are required for1) Analysis in time or frequency domain2) Quantization3) Easier operations4) Modulation
- A.
1, 2 and 3 are correct
- B.
1 and 2 are correct
- C.
1 and 3 are correct
- D.
All the four are correct
- 6.The IIR filter designing involves
- A.
Designing of analog filter in analog domain and transforming into digital domain
- B.
Designing of digital filter in analog domain and transforming into digital domain
- C.
Designing of analog filter in digital domain and transforming into analog domain
- D.
Designing of digital filter in digital domain and transforming into analog domain
- 7.DIT algorithm divides the sequence into
- A.
Positive and negative values
- B.
Even and odd samples
- C.
Upper higher and lower spectrum
- D.
Small and large samples
- 8.The circular convolution of two sequences in time domain is equivalent to
- A.
Multiplication of DFTs of two sequences
- B.
Summation of DFTs of two sequences
- C.
Difference of DFTs of two sequences
- D.
Square of multiplication of DFTs of two sequences
- 9.The overlap save method is used to calculate
- A.
The discrete convolution between a sampled signal and a finite impulse response (FIR) filter
- B.
The discrete convolution between a sampled signal and an infinite impulse response (IIR) filter
- C.
The discrete convolution between a very long signal and a finite impulse response (FIR) filter
- D.
The discrete convolution between a very long signal and a infinite impulse response (IIR) filter
- 10.WN is called as
- 11.The property that supports W88 =W80 is
- 12.Output length of the linear convolution is given by
- 13.We can Design Digital Filters using Wrapping Technique
- A.
True
- B.
False
- 14.Multiplication of two sequences in Fourier domain gives linear convolution output in time domain
- A.
True
- B.
False
- 15.Chebhsev and butterworth filters gives same order for the same specifications in filter design
- A.
True
- B.
False
- 16.64 point FFT contains 5 stages of computations
- A.
True
- B.
False
- 17.Linear convolution output can be obtained using/applying circular convolution method
- A.
True
- B.
False
- 18.Overlap save and overlap add methods requires same no of iteration blocks for computation for final output
- A.
True
- B.
False
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