i have a few signals simliar to the following data set. My goal is now to do a Frequency Analysis to compare them to each other. Faster fidgeting signals should be distinguishable from less fast fidgeting signals and should be evaluated accordingly. I tried it with the FFT Node but never made it work properly…
I’ve never used this FFT node of AI Associates before, but I noticed in the description it expects a power of 2 as input columns (2, 4, 8, 16, …). Your dataset contains just 1 column.
The description suggests to use their Window Slider node to make a matrix with the correct number of columns.
I left all the configuration of the AI Associates nodes default and the next very simple workflow runs smoothly and it gives output.