Compute the average of pwelch

4 次查看（过去 30 天）

显示更早的评论

Tu Nguyen 2022-4-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1689605-compute-the-average-of-pwelch

编辑： Tala 2022-4-6

eeg_Fs250Hz.mat

在 MATLAB Online 中打开

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

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Tala 2022-4-6

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1689605-compute-the-average-of-pwelch#answer_935825

在 MATLAB Online 中打开

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