PRACTICAL MATLAB® FOR ENGINEERS PRACTICAL MATLAB

560 Practical MATLAB® Applications for Engineers

d. the ROC

e. the magnitude and phase plots of H(z)

f. the magnitude of its poles

g. its output if its input is f(n) = 0.3nu(n)

h. the state space equations using the command tf2ss

P.5.23 An input sequence consisting of the sum of two sinusoidal waves with frequencies
of 0.3 and 0.7 Hz, respectively, and unity amplitude, and a length of 30 samples,
sampled at its Nyquist rate use MATLAB and obtain plots of the input and output
sequences in the time and frequency domains for the following cases:
a. Up sample by a factor of 2
b. Down sample by a factor of 3