Introduction
The Linear Time/Frequency Toolbox (LTFAT) is a Matlab/Octave toolbox
for doing time-frequency analysis. It is intended both as an
educational and computational tool. The toolbox provides the basic
Gabor, Wilson and MDCT transform along with routines for constructing
windows (filter prototypes) and routines for manipulating coefficients
LTFAT is developed at CAHR, Technical University of Denmark, ARI, Austrian Academy of Sciences and LATP, Universite de Provence.
This project was supported by Danish Technical Research Council
through the WAVES
programme and the EU programme
HASSIP
- Works in Matlab/Octave and essential parts in C for greater speed.
- Basic Fourier and TF-analysis (unitary DFT, involution, twisted conv., symplectic Fourier transformation).
- TF-transforms: Gabor, Wilson and MDCT
- TF-Operators: Gabor multiplier and spreading representation
- Support for full length windows (IIR) and finite length windows (FIR)
- Windows: Gauss, Hanning etc. Canonical dual and tight windows
- Spectrogram and reassigned spectrogram plots
- Simple tools for working with coefficients (threshholding, N-term approx.)
- Signals: Real world and synthetic signals.
- Examples demonstrating the use of the toolbox.
- The toolbox is Free
software, released under the GNU General Public License (GPLv3).
You can read the documentation included in the M-files online