.BG
.FN gridrec
.TL
Reconstruction from a Ridge
.DN
Reconstructs signal from sample of a ridge,
in the Gabor case.
.CS
gridrec(gtinput, node, phinode, nvoice, freqstep, scale, Qinv, epsilon, np, real=F, check=F)
.RA
.AG gtinput
Gabor transform, output of "cgt".
.AG node
time coordinates of the ridge samples.
.AG phinode
frequency coordinates of the ridge samples.
.AG nvoice
number of different frequencies.
.AG freqstep
sampling rate for the frequency axis.
.AG scale
scale of the window.
.AG Qinv
inverse of the matrix Q of the quadratic form.
.AG epsilon
coefficient of the Q_2 term in reconstruction kernel
.AG np
number of samples of the reconstructed signal.
.OA
.AG real
if set to T, uses only constraints on the real part
of the transform.
.AG check
if set to T, computes "cgt" of
reconstructed signal.
.RT
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.
.SE
.DT
.SH REFERENCES
See discussions in the text of "Practical Time-Frequency Analysis".
.SA
"sridrec", "gregrec", "regrec", "regrec2".
.EX
