# Compute the average of pwelch

6 views (last 30 days)
Tu Nguyen on 6 Apr 2022
Edited: Tala on 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?
I reeally appreciate that
clc;
close all;
clear;
[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

Tala on 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
Tala on 6 Apr 2022
Edited: Tala on 6 Apr 2022
my pleasure

### Categories

Find more on Measurements and Feature Extraction in Help Center and File Exchange

R2021b

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by