NSGABFRAMEBOUNDS Frame bounds of non-stationary Gabor frame
Usage: fcond=nsgabframebounds(g,a,M);
[A,B]=nsgabframebounds(g,a,M);
Input parameters:
g : Cell array of windows
a : Vector of time positions of windows.
M : Vector of numbers of frequency channels.
Output parameters:
fcond : Frame condition number (B/A)
A,B : Frame bounds.
NSGABFRAMEBOUNDS(g,a,Ls) calculates the ratio B/A of the frame
bounds of the non-stationary discrete Gabor frame defined by windows
given in g at positions given by a. Please see the help on NSDGT
for a more thourough description of g and a.
[A,B]=NSGABFRAMEBOUNDS(g,a,Ls) returns the actual frame bounds A*
and B instead of just the their ratio.
The computed frame bounds are only valid for the 'painless case' when
the number of frequency channels used for computation of NSDGT is greater
than or equal to the window length. This correspond to cases for which
the frame operator is diagonal.
References:
P. Balazs, M. Doerfler, F. Jaillet, N. Holighaus, and G. A. Velasco.
Theory, implementation and applications of nonstationary Gabor frames.
J. Comput. Appl. Math., 236(6):1481--1496, 2011.
Url: http://ltfat.github.io/doc/nonstatgab/nsgabframebounds.html
See also: nsgabtight, nsdgt, insdgt.
Package: ltfat