regrec {Rwave}R Documentation

Reconstruction from a Ridge

Description

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

Usage

regrec(siginput, cwtinput, phi, compr, noct, nvoice, epsilon=0,
w0=2 * pi, fast=FALSE, plot=FALSE, para=0, hflag=FALSE,
check=FALSE, minnbnodes=2, real=FALSE)

Arguments

siginput input signal.
cwtinput wavelet transform, output of cwt.
phi unsampled ridge.
compr subsampling rate for the wavelet coefficients (at scale 1)
noct number of octaves (powers of 2)
nvoice number of different scales per octave
epsilon coefficient of the Q_2 term in reconstruction kernel
w0 central frequency of Morlet wavelet
fast if set to TRUE, the kernel is computed using trapezoidal rule.
plot if set to TRUE, displays original and reconstructed signals
para scale parameter for extrapolating the ridges.
hflag if set to TRUE, uses Q_1 as first term in the kernel.
check if set to TRUE, computes cwt of reconstructed signal.
minnbnodes minimum number of nodes for the reconstruction.
real if set to TRUE, uses only real constraints on the transform.

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.
Q2 second part of the reconstruction kernel.
nbnodes number of nodes used for the reconstruction.

References

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

See Also

regrec2, ridrec, gregrec, gridrec.


[Package Rwave version 1.24-2 Index]