Question: Create MATLAB functions to display signals graphically. 1)Generate and display 4 Hz sinusoids (amplitude 2, phase - 120 ) and the sum of 10 Hz

Create MATLAB functions to display signals graphically.

1)Generate and display 4 Hz sinusoids (amplitude 2, phase - 120 ) and the sum of 10 Hz sinusoids (amplitude - 5, phase - 15 ) 0.25 s digital signal segment. The sampling frequency is 1000 Hz.

2)Generate a matrix of zeros of size 800x800 (function zeros). These insert a 300x300 random number matrix in the middle of the matrix (function rand). Submit the resulting matrix as a picture for review

3) Read a .wav file and graphically display it. In the command window, print the signal sampling period in milliseconds.

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