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FFT in Insight Headset

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Hi everyone!

First of all, sorry for my english.
I’m a mechatronics engineering student beginning with these topics about Brain Waves, I’ve found interesting and promising I hope to work more over this topics. But now I’m stuck with this:

I’ve success getting values from my Insight Headset, for the FFT brain waves of each point AF3, AF4… etc.
But now, as I’m working with the SKD developer edition in Github, I don’t have access to raw EEG data, but I’ve FFT values in a CSV file.
I don’t know how exactly to process this data, I would like to get some graphs in Matlab like this one:

FFT

I know that the sample are taken every 0.5 seconds and the window type is 2 seconds, but I don’t understand this very well,
How could I go from here, to that graph? I would like to write a script in Matlab to get those graphs and make some experiments but at the moment I’m stuck here, and also I’ve been spending sometime looking for examples in the forums but I see that almost everyone is for the EPOC headset.

I will really appreciate if someone may guide me or explain me this better.
Thanks!


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