- #1
member 428835
Hi PF!
Attached are two plots: signal.pdf is a solution from the Duffing ODE, and plots vertical displacement over time, both the raw signal (blue) and the reconstructed signal from an FFT (red). I've also shown a zoomed in view so you can see how oscillatory the signal is.
pow.pdf plots the FFT, showing one main frequency observed.
My question is, have I correctly reconstructed this signal? Sure look like I've done something terribly wrong, but perhaps I have not?
Attached are two plots: signal.pdf is a solution from the Duffing ODE, and plots vertical displacement over time, both the raw signal (blue) and the reconstructed signal from an FFT (red). I've also shown a zoomed in view so you can see how oscillatory the signal is.
pow.pdf plots the FFT, showing one main frequency observed.
My question is, have I correctly reconstructed this signal? Sure look like I've done something terribly wrong, but perhaps I have not?