The ltfat package stands for Large Time/Frequency Analysis Toolbox and is a Matlab/Octave toolbox for working with time frequency analysis, wavelets, and signal processing. 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 manipulating coefficients. The following example is borrowed from their manual, which is available at http://ltfat.github.io/doc/ltfat.pdf. The following example shows how the function franalasso() produces a sparse representation of a test signal greasy:
pkg load ltfatf = greasy;name1="sparsified coefficients"name2="dual ...
