% Voicebox: Speech Processing Toolbox for MATLAB
%
% Audio File Input/Output
%   readwav    - Read a WAV file
%   writewav   - Write a WAV file
%   readhtk    - Read HTK waveform files
%   writehtk   - Write HTK waveform files
%   readsfs    - Read SFS files
%   readsph    - Read SPHERE/TIMIT waveform files
%   readaif    - Read AIFF Audio Interchange file format file
%   readcnx    - Raed BT Connex database files
%   readau     - Read AU files (from SUN)
%
% Frequency Scales
%   frq2mel    - Convert Hertz to mel scale
%   mel2frq    - Convert mel scale to Hertz
%   frq2erb    - Convert Hertz to erb rate scale
%   erb2frq    - Convert erb rate scale to Hertz
%   frq2bark   - Convert Hz to the Bark frequency scale
%   bark2frq   - Convert the Bark frequency scale to Hz
%   frq2midi   - Convert Hertz to midi scale of semitones
%   midi2frq   - Convert midi scale of semitones to Hertz
%
% Fourier/DCT/Hartley Transforms
%   rfft       - FFT of real data
%   irfft      - Inverse of FFT of real data
%   rsfft      - FFT of real symmetric data
%   rdct       - DCT of real data
%   irdct      - Inverse of DCT of real data
%   rhartley   - Hartley transform of real data
%   zoomfft    - calculate the fft over a portion of the spectrum with any resolution
%
% Probability Distributions
%   randvec    - Generate random vectors
%   randiscr   - Generate discrete random values with prescribed probabilities
%   rnsubset   - Select a random subset
%   usasi      - Generate USASI noise
%   randfilt   - Generate filtered random noise without transients
%   gmmlpdf    - Prob density function of a multivariate Gaussian mixture
%   lognmpdf   - Prob density function of a lognormal distribution
%   histndim   - N-dimensional histogram (+ plot 2-D histogram)
%   gausprod   - Calculate the product of multiple gaussians
%   maxgauss   - Calculate the mean and variance of max(x) where x is a gaussian vector
%
% Vector Distances
%   disteusq   - Calculate euclidean/mahanalobis distances between two sets of vectors
%   distchar   - COSH spectral distance between AR coefficient sets 
%   distitar   - Itakura spectral distance between AR coefficient sets 
%   distisar   - Itakura-Saito spectral distance between AR coefficient sets
%   distchpf   - COSH spectral distance between power spectra 
%   distitpf   - Itakura spectral distance between power spectra 
%   distispf   - Itakura-Saito spectral distance between power spectra 
%
% Speech Analysis
%   activlev   - Calculate the active level of speech (ITU-T P.56)
%   dypsa      - Estimate glottal closure instants from a speech waveform
%   enframe    - Divide a speech signal into frames
%   ewgrpdel   - Energy-weighted group delay waveform
%   fram2wav   - Convert frame-based values to a waveform
%   fxrapt     - RAPT pitch tracker
%   soundspeed - Returns the speed of sound in air as a function of temperature
%   spgrambw   - Monochrome spectrogram
%   txalign    - Align two sets of time markers
%
% LPC Analysis of Speech
%   lpcauto    - LPC analysis: autocorrelation method
%   lpccovar   - LPC analysis: covariance method
%   lpc--2--   - Convert between alternative LPC representation
%   lpcrr2am   - Matrix with all LPC filters up to order p
%   lpcconv    - Arbitrary conversion between LPC representations
%   lpcbwexp   - Bandwidth expansion of LPC filter
%   ccwarpf    - warp complex cepstrum coefficients
%   lpcifilt   - inverse filter a speech signal
%   lpcrand    - create random stable filters
%
% Speech Synthesis
%   glotros    - Rosenberg model of glottal waveform
%   glotlf     - Liljencrants-Fant model of glottal waveform
%
% Speech Enhancement
%   estnoisem  - Estimate the noise spectrum from noisy speech using minimum statistics
%   specsub    - Speech enhancement using spectral subtraction
%   ssubmmse   - Speech enhancement using MMSE estimate of spectral amplitude or log amplitude
%   specsubm   - (obsolete algorithm) Spectral subtraction 
%
% Speech Coding
%   lin2pcmu   - Convert linear PCM to mu-law PCM
%   pcma2lin   - Convert A-law PCM to linear PCM
%   pcmu2lin   - Convert mu-law PCM to linear PCM
%   lin2pcma   - Convert linear PCM to A-law PCM
%   kmeans     - Vector quantisation: k-means algorithm
%   kmeanlbg   - Vector quantisation: LBG algorithm
%   kmeanhar   - Vector quantization: K-harmonic means
%   potsband   - Create telephone bandwidth filter
%
% Speech Recognition
%   melbankm   - Mel filterbank transformation matrix
%   melcepst   - Mel cepstrum frontend for recogniser
%   cep2pow    - Convert mel cepstram means & variances to power domain
%   pow2cep    - Convert power domain means & variances to mel cepstrum
%   gaussmix   - Fit a gaussian mixture model to data values
%   ldatrace   - constrained Linear Discriminant Analysis to maximize trace(W\B)
%
% Signal Processing
%   findpeaks  - Find peaks in a signal or spectrum
%   maxfilt    - Running maximum filter
%   meansqtf   - Output power of a filter with white noise input
%   windows    - Window function generation
%   zerocros   - Find interpolated zero crossings
%   ditherq    - Add dither and quantize a signal
%   schmitt    - Pass a signal through a schmitt trigger
%   momfilt    - Generate running moments
%
% Information Theory
%   huffman    - Generate Huffman code
%   entropy    - Calculate entropy and conditional entropy
%
% Computer Vision
%   peak2dquad - Find quadratically-interpolated peak in a 2D array
%   rot--2--   - Convert between different representations of rotations
%   qrabs      - Absolute value of a real quaternion
%   qrmult     - multiply two real quaternions
%   qrdivide   - divide two real quaternions (or invert one)
%
% Printing and Display functions
%   figbolden  - Make a figure bold for printing clearly
%   sprintsi   - Print a value with an SI multiplier
%   frac2bin   - Convert numbers to fixed-point binary strings
%
% Voicebox Parameters and System Interface
%   voicebox   - Global installation-dependent parameters
%   unixwhich  - Search the WINDOWS system path for an executable program (like UNIX which)
%   winenvar   - Obtain WINDOWS environment variables
%
% Utility Functions
%   atan2sc    - arctangent function that returns the sin and cos of the angle
%   bitsprec   - Rounds values to a precision of n bits
%   choosenk   - All choices of k elements out of 1:n without replacement
%   choosrnk   - All choices of k elements out of 1:n with replacement
%   dlyapsq    - Solve the discrete lyapunov equation
%   dualdiag   - Simultaneously diagonalise two hermitian matrices
%   finishat   - Estimate the finishing time of a long loop
%   logsum     - Calculates log(sum(exp(x))) without overflow/underflow
%   m2htmlpwd  - Create HTML documentation of matlab routines in the current directory
%   permutes   - All n! permutations of 1:n
%   rotation   - Generate rotation matrices
%   skew3d     - Generate 3x3 skew symmetric matrices
%   zerotrim   - Remove empty trailing rows and columns
%
% Unclassified
%   gaussmixp  - 

% Missing

%   Copyright (c) 1998-2007 Mike Brookes
%   Version: $Id: Contents.m,v 1.19 2009/02/27 07:43:42 dmb Exp $
%
%   VOICEBOX is a MATLAB toolbox for speech processing.
%   Home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
%
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%   This program is free software; you can redistribute it and/or modify
%   it under the terms of the GNU General Public License as published by
%   the Free Software Foundation; either version 2 of the License, or
%   (at your option) any later version.
%
%   This program is distributed in the hope that it will be useful,
%   but WITHOUT ANY WARRANTY; without even the implied warranty of
%   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%   GNU General Public License for more details.
%
%   You can obtain a copy of the GNU General Public License from
%   http://www.gnu.org/copyleft/gpl.html or by writing to
%   Free Software Foundation, Inc.,675 Mass Ave, Cambridge, MA 02139, USA.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%