How to perform a zoom FFT on certain portion of a signal
조회 수: 18(최근 30일)
I have a signal with a sample rate of 200HZ, see attached. I am interested in a certain portion of the signal, so I zoomed in that section from the original signal (see figure below). I want to compute FFT (maybe zoom FFT) on that portion to see the frequencies within that region. Please I need help, thank you.
Star Strider 2021년 1월 23일
First, see if the pspectrum funciton using the 'spectrogram' option will do what you want. It will segment the Fourier transform as a function of time as well as frequency. You can then easily see how the frequency content changes over time.
If that does not do what you want, please be a bit more specific.