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Low-pass filter with kalman matlab simulation, with code shows the signal received by the receiving end of a system y = 4* cos (2* pi* 310* t)+2* sin (2* pi* 40* t ) (G) was found in this sinusoidal noise signal is mixed with a noise = 4* cos (2* pi* 310* t), Please design a bandstop filter to filter this noise, thereby restoring the original signal. Requirements: (1) Please write specific MATLAB program, and explain in detail each program (2) Draw the spectrum before and after filtering the signal (3) filter is designed to draw the amplitude and phase frequency characteristics map and write specific parameters