ridrec {Rwave}

Reconstruction from a Ridge

Description

Reconstructs signal from sample of a ridge, in the wavelet case.

Usage

ridrec(cwtinput, node, phinode, noct, nvoice, Qinv, epsilon, np,
w0=2 * pi, check=FALSE, real=FALSE)

Arguments

cwtinput

wavelet transform, output of cwt.

node

time coordinates of the ridge samples.

phinode

scale coordinates of the ridge samples.

noct

number of octaves (powers of 2).

nvoice

number of different scales per octave.

Qinv

inverse of the matrix Q of the quadratic form.

epsilon

coefficient of the Q_2 term in reconstruction kernel

np

number of samples of the reconstructed signal.

w0

central frequency of Morlet wavelet.

check

if set to TRUE, computes cwt of reconstructed signal.

real

if set to TRUE, uses only constraints on the real part of the transform.

Value

Returns a list containing the reconstructed signal and the chained ridges.

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 of morlet wavelets located on the ridge samples.

solskel

wavelet transform of sol, restricted to the ridge

inputskel

wavelet transform of signal, restricted to the ridge

References

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

See Also

sridrec, regrec, regrec2.