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Exp-4 Sampling and signal reconstruction.
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1)With increasing sampling frequency fs, the mean square error of the reconstructed output w.r.t the original signal
  
2)From the observation in exp-4(c) what can you say about the delay introduced in the reconstructed output w.r.t original signal by the first order hold ?
  
3)The main cause of aliasing distortion observed in frequency domain in sampling of a continuous time signal is
  
4)Linear interpolation based reconstruction process
  
5)The role of zero padding in DFT based signal analysis is
  
6)What is over sampling ?
  
7)From the observation in exp-4(c) what can you make out about delay introduce by zero order hold ?
  
8)What do you mean by under sampling ?
  
9)What is the use of anti-aliasing filter ?
  
10)A signal can be reconstructed from its samples by using which method? 
  
11)Computation of DFT involves 
  
12)What should be done to resolve two very closely spaced sinusoids presents in a signal?
  

  


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