can someone show me how todo this. I\'m using Matlab 39. The following MATLAB co

Question

can someone show me how todo this. I'm using Matlab

39. The following MATLAB commands create a sine-shaped signal y() that signal contains random noise: t o: 05:10 i y sin (t) 0 1+0.2*rand (1, length (t)) Write a MATLAB program that uses these commands to create a noisy sine-shaped signal. Then the program smooths the signal by using the three- points moving-average method. In this method the value of every point i, except the first and last, is replaced by the average of the value of three adja cent points (i-1, i, and it 1). Make a plot that display the noisy and smoothed signals

Explanation / Answer

clc;
close all;
clear all;

t = 0:0.05:10;
y = sin(t) -0.1 + 0.2*rand(1,length(t));

%CODE to generate smoothened signal
smooth_y(1) = y(1);
smooth_y(length(t)) = y(length(t));

for i = 2:1:length(t)-1;
    smooth_y(i) = (y(i-1) + y(i) + y(i+1))/3;
end

figure
subplot(2,1,1);
stem(t,y);

subplot(2,1,2);
stem(t,smooth_y);

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