Add white noise with 0 mean and 1 std
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Yovel
on 28 Dec 2022
Commented: Walter Roberson
on 28 Dec 2022
Hello,
This is my equations.
w(k) is white noise 0 mean and 0.1 std.
how do i write w(k) ?
syms x1 x2
for k=1:1:100
if k==1
x1(k)=1;
x2(k)=1;
end
x1(k+1)=x1(k)+(exp(-k))*x2(k)+w(k);
x2(k+1)=0.95*x2(k);
plot(k,x1(k),'.'); hold on
end
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Accepted Answer
Walter Roberson
on 28 Dec 2022
w = @(k) randn(size(k)) ;
2 Comments
Image Analyst
on 28 Dec 2022
w = @(k) randn(size(k)) ;
% Generate an image
k = ones(15, 20);
noisyImage = w(k)
imshow(noisyImage, []);
axis('on', 'image');
fprintf('Mean = %g, StdDev = %g.\n', mean2(noisyImage), std2(noisyImage))
Walter Roberson
on 28 Dec 2022
w = @(k) randn(size(k)) ;
syms x1 x2
for k=1:1:100
if k==1
x1(k)=1;
x2(k)=1;
end
x1(k+1)=x1(k)+(exp(-k))*x2(k)+w(k);
x2(k+1)=0.95*x2(k);
plot(k,x1(k),'.'); hold on
end
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