1. Open m file of sampandquant, uniquan and Prelab4 inMATLAB.
a. Set the quantization levels of PCM (L) as 2 and 32. Compareyour results.
b. Why did we choose the cut-off frequency of the ideal LPF as30 Hz. What happens for small or very big values of the cut-offfrequency?
c. Change the message signal as : xsig = cos(2pit) +cos(2pit)
d. First set the quantization levels of PCM (L) as 2 and 32.Compare your results. Then, set different values of L and compareyour results.
e. What should be the cut off frequency of the ideal low passfilter for the signal given in part (c) so that the original andthe recovered signals will look like each other?
