hht (version 2.1.3)

HilbertTransform: The Hilbert transform

Description

Creates the analytic signal using the Hilbert transform.

Usage

HilbertTransform(sig)

Arguments

sig

Signal to transform.

Value

asig

Analytic signal

Details

Creates the real and imaginary parts of a signal.

See Also

HilbertEnvelope, InstantaneousFrequency

Examples

tt <- seq(1000) * 0.01
sig <- sin(pi * tt)
asig <- HilbertTransform(sig)
plot(tt, sig, xlim = c(0, 12))
lines(tt, Re(asig), col = "green")
lines(tt, Im(asig), col = "red")
legend("topright", col = c("black", "green", "red"), 
lty = c(NA, 1, 1), pch = c(1, NA, NA), 
legend = c("Signal", "Real", "Imaginary"))