% DiscreteTFDs % Version 0.8    08-Jul-1999% % Changes      - Log of changes from previous versions.% Copyright    - Copyright Information% DTFDPath.m   - File that needs to called from your startup.m file.% GNU_GPL      - GNU General Public License% Makefile     - Package maintenance.% README       - Installation Information% ToDo         - Wish list of changes to make.%% Chirplets - Chirplet Decomposition via ML Estimation%   KandQ          - compute statistics of the Fisher information%   angle2cr       - convert an angle to a chirp rate%   best_chirplet  - find the best chirplet in a signal%   cr2angle       - convert a chirp rate to an angle%   crlb           - compute the Cramer-Rao lower bound for one chirplet%   est_c          - estimate the chirp rate locally%   est_cd_global  - estimate the chirp rate and duration globally%   est_d          - estimate the duration locally%   est_tf         - estimate the location in time and frequency%   f_chirp        - used by the optimization procedure%   find_chirplets - find the best Q chirplets in a signal%   fisher         - compute the Fisher information matrix%   g_chirp        - used by the optimization procedure%   hessian        - computes a hessian matrix of the likelihood function%% Demos - Various Demonstrations%   demo_chirplets - demo of chirplet decomposition with ML estimation%   demo_cohen     - demo comparing the different Cohen classes%   demo_localized - demo of localized distribution%   demo_ltvf      - demo of linear, time-varying filtering%   demo_tcd       - demo of the time-chirp distribution%   demo_wigner4   - demo of the type IV Wigner distribution%% Symplectic - Symplectic Transformations%   chirp2rot   - convert chirplet parameters to rotation parameters%   fracft      - fractional Fourier transform%   freq_shear  - chirp convolution%   scale       - scale a signal%   time_shear  - chirp multiplication%% Type I - Compute TFDs in the Type I Cohen class%   choi_williams1%   lacf1%   margenau_hill1%   rihaczek1%   spec1%   stft1%   smooth1%   wigner1%% Type II - Compute TFDs in the Type II Cohen class%   binomial2%   born_jordan2%   lacf2%   levin2%   margeneau_hill2%   page2%   qwigner2%   rihaczek2%   spec2%   stft2%% Type IV - Compute TFDs in the Type IV Cohen class%   binomial4%   margenau_hill4%   qwigner4 (even length signals only)%   richman%   rihaczek4%   spec4%   stft4%   wigner4 (odd length signals only)%% Quartic - some quartic functions from my research%   laf       - the local ambiguity function%   localized - a TFD that is localized for quadratic chirps%   lwigner   - L-Wigner distributions%   tcd       - a distribution of time and chirp rate%% Utils - Some useful utilities.%   acf         - compute the auto-correlation function%   add_noise   - add white, gaussian noise to a signal%   chirplets   - make a signal that is a sum of chirplets%   cconv       - circular convolution with FFTs%   circ        - circularly shift a vector%   fmcubic     - make a signal with a cubic frequency modulation%   fmpoly      - make a signal with a polynomial frequency modulation%   fmsin       - make a signal with a sinusoidal frequency modulation%   hermite     - make hermite functions%   lconv       - linear convolution with FFTs%   ltv_filter  - implement a linear, time-variant filter%   ptfd        - display an image plot of a TFD with a linear amplitude scale%   ptfd_marg   - display an image plot of a TFD with marginals%   ptfddb      - display an image plot of a TFD with a dB amplitude scale%   sig_mom     - compute moments of the signal%   sinc_interp - interpolate a vector with sinc interpolation%   tfdshift    - shift the spectrum of a TFD by pi radians%% Copyright (C) -- see DiscreteTFDs/Copyright