H {spectral} | R Documentation |
The Hilbert transform is a phase shifter, which represents the complex complement
to a real vauled signal. It is calculated in the complex frequency space of the
signal by using the Fourier transform. Finally, calculating f = y + i*H(y)
gives the analytic signal, with a one sided spectrum. (See analyticFunction
)
H(x)
x |
real valued time series |
A numeric real valued vector is returned