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Rwave (version 1.2)

ridrec: 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.
  • solreconstruction from a ridge
  • A matrix
  • lamcoefficients of dual wavelets in reconstructed signal.
  • dualwavearray containing the dual wavelets.
  • morveletsarray of morlet wavelets located on the ridge samples.
  • solskelwavelet transform of sol, restricted to the ridge
  • inputskelwavelet transform of signal, restricted to the ridge

References

See discussions in the text of ``Practical Time-Frequency Analysis''.

See Also

sridrec, regrec, regrec2.