gridrec {Rwave}R Documentation

Reconstruction from a Ridge

Description

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

Usage

gridrec(gtinput, node, phinode, nvoice, freqstep, scale, Qinv,
epsilon, np, real=FALSE, check=FALSE)

Arguments

gtinput Gabor transform, output of cgt.
node time coordinates of the ridge samples.
phinode frequency coordinates of the ridge samples.
nvoice number of different frequencies.
freqstep sampling rate for the frequency axis.
scale scale of the window.
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.
real if set to TRUE, uses only constraints on the real part of the transform.
check if set to TRUE, computes cgt of reconstructed signal.

Value

Returns a list containing the reconstructed signal and the chained ridges.
sol reconstruction from a ridge.
A <gaborlets,dualgaborlets> matrix.
lam coefficients of dual gaborlets in reconstructed signal.
dualwave array containing the dual gaborlets.
gaborets array of gaborlets located on the ridge samples.
solskel Gabor transform of sol, restricted to the ridge.
inputskel Gabor transform of signal, restricted to the ridge.

References

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

See Also

sridrec, gregrec, regrec, regrec2.


[Package Rwave version 1.24-2 Index]