regrec2 {Rwave}R Documentation

Reconstruction from a Ridge

Description

Reconstructs signal from a “regularly sampled” ridge, in the wavelet case, from a precomputed kernel.

Usage

regrec2(siginput, cwtinput, phi, nbnodes, noct, nvoice, Q2,
epsilon=0.5, w0=2 * pi, plot=FALSE)

Arguments

siginput input signal.
cwtinput wavelet transform, output of cwt.
phi unsampled ridge.
nbnodes number of samples on the ridge
noct number of octaves (powers of 2)
nvoice number of different scales per octave
Q2 second term of the reconstruction kernel
epsilon coefficient of the Q_2 term in reconstruction kernel
w0 central frequency of Morlet wavelet
plot if set to TRUE, displays original and reconstructed signals

Details

The computation of the kernel may be time consuming. This function avoids recomputing it if it was computed already.

Value

Returns a list containing:
sol reconstruction from a ridge.
A <wavelets,dualwavelets> matrix.
lam coefficients of dual wavelets in reconstructed signal.
dualwave array containing the dual wavelets.
morvelets array containing the wavelets on sampled ridge.
solskel wavelet transform of sol, restricted to the ridge.
inputskel wavelet transform of signal, restricted to the ridge.
nbnodes number of nodes used for the reconstruction.

References

See discussions in the text of “Practical Time-Frequency Analysis”.

See Also

regrec, gregrec, ridrec, sridrec.


[Package Rwave version 1.24-2 Index]