f=insdgt(c,g,a,M,Ls);
| c | Cell array of coefficients. |
| g | Cell array of window functions. |
| a | Vector of time positions of windows. |
| M | Vector of numbers of frequency channels. |
| Ls | Length of input signal. |
| f | Signal. |
insdgt(c,g,a,Ls) computes the inverse non-stationary Gabor transform of the input coefficients c.
insdgt is used to invert the functions nsdgt and unsdgt. Please read the help of these functions 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 using nsgabdual or nsgabtight.
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 ]