1. PRE-WORKSHOP: Let o be the continuous-time sinusoidal signal given by x(t) = cos(207) = What is the frequency of this

[answerhappygod]

1 Pre Workshop Let O Be The Continuous Time Sinusoidal Signal Given By X T Cos 207 What Is The Frequency Of This 1 (76.93 KiB) Viewed 23 times

1. PRE-WORKSHOP: Let o be the continuous-time sinusoidal signal given by x(t) = cos(207) = What is the frequency of this signal? Let y be the discrete-time signal obtained from sampling z with sampling frequency fs = 15 11z. Then y[n] = x(nT;), where T, = 1/fs. Show that aliasing of x occurs at this sampling frequency by showing that there exists a lower frequency continuous-time sinusoidal signal 21 such that, if yi is the discrete-time signal obtained from sampling 11 with sampling frequency fs, then for all n ez, yi[n] = y[n] = Hint: Consider Problem 13 from the Practice Problems. 2. PRE-WORKSHOP: What is the least frequency fe that can be used to sample z without aliasing? Give a reason for your answer, explaining it using your intuition rather than referring to the existing theorems. Write about 10 to 20 words.