A filter is uscd to enhance the quality of a mobile-phone signal by simply subtracting unwanted signals from the main one. The signal that we want to deliver to the customer is sin(30), the signal...

Answer Task 2, please.

Extracted text: A filter is uscd to enhance the quality of a mobile-phone signal by simply subtracting unwanted signals from the main one. The signal that we want to deliver to the customer is sin(30), the signal with the noisy components is 3sin(8), and the noise to be removed is 4 sin (e). A. Show that the following equation holds using the identities of circular functions [Useful signal = total signal – noise): sin(30) = 3 sin(8) – 4 sin (0) B. Let e = 1xt, where 1 is the angular frequency (w) in rad/s and t is the time in seconds. Using MATLAB, plot on the same figure sin(30), 3sin(8), and 4 sin (0).


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