Code for shannon energy envelope?
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hi guys
i have a pcg signal
and i want to using SHANNON ENERGY ENVELOPE for it
but i didnt find the code for it, in 'envelope' documentation there is only peak,rms and analytic function
is there any way to use the shannon energy envelope ?
thank you so much
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Star Strider
2019-1-17
Shannon energy is defined as 
, so use an anonymous function such as:
, so use an anonymous function such as: ShannonEnergy = @(x) x.^2 .* log(x.^2);
and then take the peak envelope.
That is what I would do.
5 个评论
Mr noobys
2019-1-17
Star Strider
2019-1-17
My pleasure.
Now that I have your data, this appears to be the best option:
ShannonEnergy = @(x) x.^2 .* log(x.^2);
D = load('matlab.mat');
data = D.data;
Fs = D.fs;
t = linspace(0, 1, numel(data))/Fs;
SEdata = ShannonEnergy(data - mean(data));
SEenv = envelope(-SEdata, 100, 'peak');
figure
plot(t, data, '-b')
hold on
% plot(t, SEdata, '-g')
plot(t, SEenv, '-r', 'LineWidth',1)
hold off
Experiment with the various parameters of the envelope function to get the result you want.
Mr noobys
2019-1-17
Star Strider
2019-1-17
As always, my pleasure!
cedric Adomaya
2019-12-23
help me with matlab.mat in this code
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