Reconstructs signal from sample of a ridge, in the Gabor case.
gridrec(gtinput, node, phinode, nvoice, freqstep, scale, Qinv,
epsilon, np, real=FALSE, check=FALSE)
Gabor transform, output of cgt
.
time coordinates of the ridge samples.
frequency coordinates of the ridge samples.
number of different frequencies.
sampling rate for the frequency axis.
scale of the window.
inverse of the matrix \(Q\) of the quadratic form.
coefficient of the \(Q_2\) term in reconstruction kernel
number of samples of the reconstructed signal.
if set to TRUE, uses only constraints on the real part of the transform.
if set to TRUE, computes cgt
of
reconstructed signal.
Returns a list containing the reconstructed signal and the chained ridges.
reconstruction from a ridge.
<gaborlets,dualgaborlets> matrix.
coefficients of dual gaborlets in reconstructed signal.
array containing the dual gaborlets.
array of gaborlets located on the ridge samples.
Gabor transform of sol, restricted to the ridge.
Gabor transform of signal, restricted to the ridge.
See discussions in the text of ``Practical Time-Frequency Analysis''.