Nov. 26, 2015
4:59 p.m.
Is there any way to check for cycles in this situation?
Fast fourier transform (fft)?
+1 For using a discrete Fourier transform, as implemented by numpy.fft.fft. You mentioned that you sample at points which do not correspond with the period of the signal; this introduces a slight complexity in how the Fourier transform reflects information about the original signal. I attach two documents to this email with details about those (and other) complexities. There is also much information on this topic online and in signal processing books.
Dear Elliot, Daniel, Thanks a lot for that. Off to read! M