Recording spectograph information

[fivesenses]

After doing some Googling, I can just about understand how to use the spectograph to figure out my own readings, but the app only exports to csv text files. Since I can't monitor myself meditating, is there a way to have it record and save data as a spectograph? Or convert the csv to a spectograph image?

[James]

There is currently no way to record directly to a spectrogram. However all the data in the spectrogram is interpreted data created from the RAW data, which is recorded. As such, you can re-create a spectrogram from a RAW data recording. To do this, perform an FFT with a hamming window function.

[fivesenses]

Sorry, I don't know what an FFT or a hamming window function is. Can you tell me what I need to do to convert the RAW data into a spectogram?

[James]

Wikipedia has a very good article on Fast Fourier Transforms (FFT). If you've not heard of FFT then it will likely be a steep learning curve for you. I would recommend using something like processing.org to play with the data.