gusucode.com > 《MATLAB图像与视频处理实用案例详解》代码 > 《MATLAB图像与视频处理实用案例详解》代码/第 19 章 基于语音识别的信号灯图像模拟控制技术/voicebox/Contents.m
% 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)
% readflac - Read FLAC files
%
% 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
% sphrharm - calculate forward and inverse shperical harmonic transformations
%
% Probability Distributions
% randvec - Generate random vectors
% randiscr - Generate discrete random values with prescribed probabilities
% rnsubset - Select a random subset
% randfilt - Generate filtered random noise without transients
% stdspectrum - Generate standard audio and speech spectra
% gausprod - Calculate the product of multiple gaussians
% maxgauss - Calculate the mean and variance of max(x) where x is a gaussian vector
% gaussmix - Fit a gaussian mixture model to data values
% gaussmixp - Calculates full and marginal probability density from a Gaussian mixture
% gaussmixd - Calculate marginal and conditional density distributions and perform inference
% 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)
% usasi - Generate USASI noise (obsolete: use stdspectrum instead)
%
% 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 for frame-based processing
% correlogram - calculate a 3-D correlogram
% ewgrpdel - Energy-weighted group delay waveform
% fram2wav - Interpolate frame-based values to a waveform
% filtbankm - Determine matrix for a linear/mel/erb/bark-spaced filterbank
% fxpefac - PEFAC pitch tracker
% fxrapt - RAPT pitch tracker
% gammabank - Calculate a bank of IIR gammatone filters
% importsii - Calculate the SII importance function (ANSI S3.5-1997)
% modspect - Caluclate the modulation specrogram
% overlapadd - Reconstitute an output waveform after frame-based processing
% psycdigit - Experimental estimation of monotonic/unimodal psychometric function using TIDIGITS
% psycest - Experimental estimation of monotonic psychometric function
% psycestu - Experimental estimation of unimodal psychometric function
% psychofunc - Psychometric functions
% sigma - Identify glottal closure and opening intstants from Lx or EGG waveform
% snrseg - Segmental SNR and Global SNR calculation
% soundspeed - Returns the speed of sound in air as a function of temperature
% spgrambw - Spectrogram with many options
% txalign - Align two sets of time markers
% vadsohn - Voice activity detector
%
% 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
% sapisynth - Text-to-speech synthesis of a string or matrix
% 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
% ldatrace - constrained Linear Discriminant Analysis to maximize trace(W\B)
%
% Signal Processing
% ditherq - Add dither and quantize a signal
% findpeaks - Find peaks in a signal or spectrum
% filterbank - Apply a bank of IIR filters to a signal
% maxfilt - Running maximum filter
% meansqtf - Output power of a filter with white noise input
% momfilt - Generate running moments
% schmitt - Pass a signal through a schmitt trigger
% sigalign - Align a clean refeence with a noisy signal
% teager - Calculate the Teager energy waveform
% windinfo - Calculate window properties and figures of merit
% windows - Window function generation
% zerocros - Find interpolated zero crossings
%
% Information Theory
% huffman - Generate Huffman code
% entropy - Calculate entropy and conditional entropy
%
% Computer Vision
% imagehomog - Apply a homography transformation to an image with bilinear interpolation
% 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)
% polygonarea - Calculate the area of a polygon
% polygonwind - Test if points are inside or outside a polygon
% polygonxline - Find where a line crosses a polygon
% sphrharm - forward and inverse spherical harmonic transform using uniform, Gaussian
% or arbitrary inclination (elevation) grids and a uniform azimuth grid.
% upolyhedron - Calculate the vertex coordinates and other characteristics of a uniform polyhedron
%
% Printing and Display functions
% xticksi - Label x-axis tick marks using SI multipliers
% yticksi - Label y-axis tick marks using SI multipliers
% xyzticksi - Helper function for xticksi and yticksi
% figbolden - Make a figure bold for printing clearly
% cblabel - Add a label onto the colorbar
% 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
% fopenmkd - like FOPEN() but creates any missing directories/folders
% logsum - Calculates log(sum(exp(x))) without overflow/underflow
% m2htmlpwd - Create HTML documentation of matlab routines in the current directory
% nearnonz - Replace each zero element with the nearest non-zero element
% permutes - All n! permutations of 1:n
% quadpeak - Find quadratically-interpolated peak in a 2D array
% rotation - Generate rotation matrices
% skew3d - Generate 3x3 skew symmetric matrices
% zerotrim - Remove empty trailing rows and columns
%
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% Copyright (c) 1998-2011 Mike Brookes
% Version: $Id: Contents.m,v 1.37 2011/07/31 11:55:47 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.
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