b) A 3-bit PCM system with a linear mid-rise quantizer of step-size = 1V is used to digitize the signal m(t) = 4 cos(t) V. Assume a sampling rate of four samples per second, with
i) Signal m(t) and label the value of the samples taken
ii) Graph for linear mid-rise quantizer of step-size = 1V
iii) Resulting PCM wave for one complete cycle of the m(t) input signal