This week I entered the raw data of more channels and tried to graph it in Google Sheet. I counted the frequencies by hand again to get an approximation, therefore calculating an estimated value for the threshold more precisely. Here is my work:
It can be inferred that the frequencies are mostly in the range from 20 to 30Hz, but the differences for the threshold are pretty similar (~10) except for F7 in this set of data. My next step would be trying to adjust the program and run it with different sets of data, and from there I can calculate the measurement errors and see how much it would affect the accuracy.
nguyen_k
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