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 |
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 |
epsilon |
coefficient of the |
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 |
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
.