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Version 1.4.4 25/2 2014
	* Mostly bug fixes and doc updates. 

	* Reworked build system on Linux and Mac OS.

	* Most of the code moved from Mex/Oct interfaces to the backend.

	* The C code was revised: consistence of argument naming and order,
	                          introduced ltfatInt data type for array

	* New block processing demos: real-time CQT and Erblets
	  (fast enough only in Matlab).

	* Added routines for calculating Gabor dual frames using convex optimization
	  (requires UNLocBoX http://unlocbox.sourceforge.net/).

	* Improved usability of the blockproc GUI: Added possibility to set initial 
	  window positions, capturing Ctrl-C shortcut.

	* Closed #22: Wilson and MDCT transforms are now completely implemented in C.

	* Renamed framematrix to frsynmatrix

Version 1.4.3 22/11 2013
    * Fixed bug in nsgabframebounds.m

    * Added chirped Z-transform

    * Block processing demos now work in Octave (on Linux)

    * Backend library now uses C99 complex number format only

    * Faster block processing via block_interface MEX function

    * New zoomig features for blockplot

Version 1.4.2 17/9 2013
	* Added mexExecuter to speed up cell array handling in the backends

	* All filterbank algorithms are now in the backend

	* franalasso now packs the FISTA algorithm

	* More block processing demos: pitch shifting

	* Added the generalized Goertzel algorithm

Version 1.4.1 18/7 2013
	* Major change in the output format from the wfilt_ functions. If
	a wfilt_ function generates a tigth frames, its two outputs are
	now identical.

	* Close #67, #68, Mex compilation now works on Mac

	* Experimental filter backend added to handle filters defined on
	the frequency side and on the time side using structs and
	anonymous functions

	* Limited support for fractional downsampling in filters and filterbanks

	* erbfilters routine added to generate Erb-spaced filterbanks

	* Fixed bug #6, demo_audioshrink now works again

	* All DCT and DST routines now call FFTW directly.

	* Fixed bug #55, FWT on Octave can now handle complex values

	* Added floor23, floor234, ceil23 and ceil235 to find the next
	nice number. Useful for constructing downsampling rates in

Version 1.4.0 3/6 2013
	* All routines calling the C backend now support single precision

	* Frames framework has been rewritten for greater speed using
	anonymous functions

	* New "operators" directory for the comming inclusion of more
	operator classes

	* First alpha version of the block processing framework introduced
	in "blocks"

	* The noshearlength routine computes next efficient transform length
	for a Gabor system on a non-separable lattice

	* The frames framework now support non-stationary Gabor systems

	* Compilation of functions calling BLAS and LAPACK has been fixed,
	so gabdual and gabtight now works in C on all platforms

	* Better speed when computing many Hermite functions, support for
	orthonormalization in the sampled continous case

	* Fast and discrete fractional Fourier transform added

	* cqt and erblett transforms added

Version 1.3.1 5/4 2013
	* Fixed compilation on Unix

	* Wavelets now works in Octave

	* Improved firwin featuring all the windows from the Nuttall paper

Version 1.3.0 20/3 2013
	* This is the first full release of the wavelets. Too many changes
	to list here, but the major features are listed below:

	* fwt - Fast wavelet transform

	* fwt2 - 2D FWT with different layouts

	* ufwt - Undecimated FWT

	* wfbt - Wavelet filter bank tree

	* wpfbt - Wavelet packet filter bank tree

	* wpbest - Best basis search of a wavelet packet tree

	* wfilt_ functions defines a lot of different possible wavelet and
	scaling functions.

	* Mex compiled code is now supported for Windows 64 bit (Windows
	Vista, 7). Support for Windows 32 has been dropped.

	* Color test image, lichenstein, added and jpeg color model
	support in rgb2jpeg

	* frame multipliers added with the usual functions, framemul,
	framemulinv, framemuladj, framemuleigs and framemulappr

Version 1.2.0 13/12 2012
	* Full support for non-separable Gabor lattices with support in
	the C backend.

	* Improved non-stationary Gabor systems: bugfixes for system with
	odd-length shifts, tester has been extented to cover all these

	* Iterative analysis and synthesis for frames: franaiter and
	frsyniter uses the conjugate gradients algorithm.

	* The "frames" framework has changed so that each frame object
	only includes one frame. This means that you will need to create
	two frames if you want to perform analysis/synthesis with a
	bi-orthogonal / canonical dual system. On the other hand, a lot of
	duplication was removed.

	* Small bugfixes: idgt2, gabdualnorm

Version 1.1.2 2/10 2012
	* Almost full support for non-separable Gabor laticces

	* Multi-win support re-enabled in gabdual and gabtight

	* Demos finally converted to new documentation system

Version 1.1.1 30/3 2012
	* Initial inclusion of the frames framework

	* New and more flexible groupthresh

	* Much improved framelasso and framegrouplasso replaces the old
	lasso methods

Version 1.0.0 16/6 2011
	* Auditory scales: Erb, bark, mel

	* Gammatone filters.

	* Filterbanks with a full set of support functions.

	* non-stationary Gabor frames with a full set of support

	* rangecompress and rangeexpand does ulaw and alaw.

	* cocktailparty test signal replaces older 'greasylong'

	* plot functions for visualizing coefficients of all transforms.

	* C implementation improved: speedup in gabdual and gabtight,
	implementation of dgtreal, pfilt and ufilterbank.

	* nextfastfft computes next larger problem size with a fast FFT.

	* isgramreal can use BFGS method, requires external software.

Version 0.98.2 25/3 2011
	* Added C code for IDGT using FIR filters.

	* WinXP compilation now works without LCC.

Version 0.98.1 25/2 2011
	* New iterative spectrogram reconstruction featuring the word "LTFAT".

	* Features added to ltfatarghelper to support importing definitions
	from aux. functions.

Version 0.98 28/1 2011

	* The flags 'freqinv' and 'timeinv' can be passed to the DGT, IDGT,
	DGTREAL and IDGTREAL to select a time- or frequency-invariant phase.

	* Three new functions to ramp a signal (create a smooth transition

	* nuttall window added to FIRWIN. General cleanup of FIRWIN. If is
	now possible to taper the window in the middle.

	* Support for different normalization of the function in all
	window functions. This is done through the function NORMALIZE.

	* PGAUSS takes options for shifting the center frequency and
	specifying the bandwidth, in both samples or Hz.

	* PINKNOISE: Pink noise generator.

	* ISGRAM: Spectrogram reconstruction using the classical iterative
	method by Griffin and Lim.

	* ELITISTHRESH: Elitist LASSO thresholding.

	* PRECT and PSINC: periodic rectangular and periodic Sinc function.

Version 0.97.2:

	* The GPC source code is now distributed with LTFAT. A popup
	dialog has been added to mulaclab to explan the license

	* The algorithm for computing dgtreal with a FIR window is now
          implemented in C.

Version 0.97.1:

	* Support for Octave on Windows XP.

	* It is now possible to specify various targets and commands in

Version 0.97

	* Toolbox is now built upon a standalone C library.

	* The 'mulaclab' is a graphical user interface for
          manipulating the spectrogram of a signal. The gui works only
          in Matlab.

	* All functions in the LTFAT C library are now available in
          both single and double precision

	* Compilation and interfaces for both Matlab and Octave
          interfaces now works on Windows XP.

 	* It is now possible to supply a window described by a text
          string or a cell array to all relevant functions. See the
          help on gabwin or wilwin for a description of the

	* Much better support for optional arguments in functions, and
          for setting default at startup. See the function
          ltfatsetdefaults, ltfatgetdefaults and ltfatarghelper

        * GABRIESZBOUNDS: compute Gabor Riesz bounds for a Gabor Riesz

	* WIL2RECT and RECT2WIL: arrange Wilson coefficients in a
          rectangular shape (with holes) at the correct position in
          the TF-plane.

        * PEVEN and PODD extracts the even and odd part of a signal.

Version 0.96 12/1 2009 svn no 728
	* Matlab MEX compilation now works under Windows. See the
	instructions in the INSTALL file.

	* Speed optimizations in the C-code used by DGT, DWILT and MDCT
	and their inverses.

	* New functions DGTREAL and IDGTREAL works with the positive
	frequencies of the DGT of real valued signals.

	* New functions FFTREAL computes only the positive frequencies of
	the FFT of a real valued input signal.

	* More systematic naming of functions:

	* Reassignment is a method for sharpening the spectrogram. Support
	for reassignment is included in the new function REASSIGN and an
	easy to use plot RESGRAM.

	* Easy to use plot for plotting instantantaneous frequency:

	* Three different methos for computing instantaneous time and

	* General speedup of many of the SPREAD* routines based on speedup
	in COL2DIAG and more efficient algorithms for sparse matrices.

	* COL2DIAG provides the basic coordinate change needed for
	efficient implementation of spreading function methods. COL2DIAG
	has a C-implementation.

	* New function WIL2RECT converts Wilson coefficients from the
	standard compact layout to a more loose layout, where the
	coefficients are appropriatly placed on the TF-plane. The
	rectangular format is welll suited for visualizing Wilson

	* The functionality of GFBOUNDS was split into two methods
	computing either frame bounds or Riesz basis bounds

	* Dynamic range in SGRAM and RESGRAM is now specified by the
	'dynrange' parameter instead of previously 'range'.

	* greasylong and doppler signals added.

	* Periodic Heaviside function added, PHEAVISIDE.

	* Simple exponential wave added as EXPMODE.

Version 0.95 6/3 2008 svn no. 595

	* DCT based resampling function.

Version 0.94 24/10 2007 svn no. 556

	* Numerically stable computation of Hermite functions. Thanks to
	Thomasz Hrycak.

	* gabmulappr (approximation of an operator by a Gabor multiplier)
	now works with fast algorithm.

	* group lasso shrinkage and adaptive lasso shrinkage added with an
	example (examp_audioshrink)

	* Removed all support of lattices in the spreading operator
	routines, as this is not practically usefull.

	* Special support in candual for windows shorter than the number
	of channels.

	* The configure style system has been removed. Use ltfatmex instead.

	* phaseplot now uses the phaselocked dgt by default.

Version 0.93 10/8 2007 svn no. 504

	* Easy compilation of Mex/Octave interfaces by 'ltfatmex' command

	* Bug fixed for Wilson bases.

	* Better support of choosing an alternative dimension for the
	various transforms.

	* fmax option added to sgram

	* fftresample does Fourier interpolation 

	* phaseplot changed to always do full STFT 

	* moved to GPL v 3.0 license

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