Signal Reconstruction from Samples Exercises  

1. Choose the periodic triangular waveform and select the sampling frequency at 4 times the Nyquist rate. Reconstruct the waveform using rectangular, triangular, and truncated sinc pulses. Which reconstruction leads to better results?
   
   
2. Repeat the same procedure for the periodic square waveform. Does reconstruction by  truncated sinc pulses lead to a satisfactory result? Do you recognize any persistent phenomenon?
   
   
3. What distinguishes the periodic square waveform from the other two waveforms (periodic triangular waveform and sinusoidal waveform)?
   
   
4. Which reconstruction pulse gives the best result for the periodic sinusoidal signal?