The Large Time/Frequency Analysis Toolbox (LTFAT) is a Matlab/Octave toolbox for working with time-frequency analysis and synthesis. It is intended both as an educational and a computational tool. The toolbox provides a large number of linear transforms including Gabor and wavelet transforms along with routines for constructing windows (filter prototypes) and routines for manipulating coefficients
The toolbox is Free software, released under the GNU General Public License (GPLv3).Download LTFAT
The following pdfs provide more information:
Peter L. Søndergaard, Bruno Torrésani, Peter Balazs. The Linear Time-Frequency Analysis Toolbox. International Journal of Wavelets, Multiresolution Analysis and Information Processing, 10(4), 2012. [bibtex]available from here or one of the available notes if relevant to your work. This will help in securing a continued development of the toolbox.