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Compute the average of pwelch

7 Ansichten (letzte 30 Tage)
Tu Nguyen
Tu Nguyen am 6 Apr. 2022
Bearbeitet: Tala am 6 Apr. 2022
Hi all
I have eeg signal with 129 samples,
I computed each signal, now I need to take the average of all 129 samples and plot that average. How can I do that?
Please help me.
I reeally appreciate that
clc;
close all;
clear;
load('eeg_Fs250Hz.mat');
[row columm] = size(eeg);
for i = 1:columm
[ppx{i}, f{i}] = pwelch(eeg(:,i),200,100,200,Fs);
figure(1);
plot(ppx{i});
hold on
end

Antworten (1)

Tala
Tala am 6 Apr. 2022
not sure what the avarage of pwelch means! maybe avarage energy of your signal? there are better ways to do so...anyways...you could just this after your hold on command.
plot(mean(ppx{i}));
I would add f{i} as well in my plots. meaning plot(f{i}, ppx{i}) to see the frequencies on your plot
  6 Kommentare
Tu Nguyen
Tu Nguyen am 6 Apr. 2022
I got it. Appreciate you a lot
Tala
Tala am 6 Apr. 2022
Bearbeitet: Tala am 6 Apr. 2022
my pleasure

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