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IUNSDGT - Inverse uniform non-stationary discrete Gabor transform

Usage

f=iunsdgt(c,g,a,Ls);

Input parameters

c Cell array of coefficients.
g Cell array of window functions.
a Vector of time positions of windows.
Ls Length of input signal.

Output parameters

f Signal.

Description

IUNSDGT(c,g,a,Ls) computes the non-stationary Gabor expansion of the input coefficients c.

IUNSDGT is used to invert the function NSDGT. Read the help of NSDGT for details of variables format and usage.

For perfect reconstruction, the windows used must be dual windows of the ones used to generate the coefficients. The windows can be generated unsing NSGABDUAL.

References:

P. Balazs, M. Dörfler, 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. [ .pdf ]