contents.m

很多matlab的源代码

% ADSP Toolbox: Version 2.0 
% For use with "Analog and Digital Signal Processing", 2nd Ed.
% Published by PWS Publishing Co.
%
% Ashok Ambardar, EE Dept. MTU, Houghton, MI 49931, USA
% http://www.ee.mtu/faculty/akambard.html
% e-mail: [e-mail]
% Copyright (c) 1998
%
% TUTORIALS AND DEMONSTRATIONS
%  tour      - A tour of the toolbox routines (except the guis)
%  tutorial  - Tutorial on MATLAB basics and syntax
%  democonv  - Demo of concepts in convolution
%  democorr  - Demo of concepts in correlation
%  demofs    - Demo of concepts in Fourier series
%  demosamp  - Demo of concepts in sampling aliasing & leakage
%
% GRAPHICAL USER INTERFACE (GUI) PROGRAMS
%  tourgui   - A tour of all the guis
%  printgui  - Facility for printing guis (for MATLAB v4.x)
%  mathgui   - Special mathematical functions
%  ctsiggui  - Analog signals and operations
%  randgui   - Random signals and their histograms
%  ctsimgui  - Simulation of time-domain response of CT systems
%  ctcongui  - Continuous convolution
%  fsgui     - Fourier series reconstruction and smoothing
%  fsrgui    - System response to periodic signals
%  fssyngui  - Fourier series synthesis from its coefficients
%  ftprpgui  - Fourier transform properties
%  freqgui   - Frequency response of CT systems
%  ctfgui    - Pole-zero plots, CT impulse response and frequency response
%  bodegui   - Bode plots
%  modgui    - Modulation concepts
%  afdgui    - Analog filter design
%  chirpgui  - Chirp signals
%  dtsiggui  - Discrete signals and operations
%  dtimgui   - Time-Domain Response of DT systems
%  dtcongui  - Discrete convolution
%  dfreqgui  - Frequency response of DT systems
%  dtfgui    - Pole-zero plots, DT impulse response and frequency response
%  dfftgui   - FFT of sinusoids and windowing
%  diirgui   - IIR filter design 
%  pzdesgui  - Filter design by pole-zero placement
%  lpsiggui  - Linear phase sequences and their spectra
%  dfirgui   - FIR filter design
%  tfestgui  - Transfer function estimation
%
% PLOTTING ROUTINES
%  animate   - animated plot of one or more functions
%  funplot   - Plot of a string function or m-file function
%  dtplot    - Plots discrete signals
%  axesn     - Draws axes on an existing plot
%  digiplot  - Plots staircase type function
%  ellipse   - Draws an ellipse or circle
%  phasor    - Draws a phasor diagram of complex vector
%
% SIGNALS
%  udelta    - unit impulse function
%  uramp     - unit ramp function
%  ustep     - unit step function
%  urect     - unit rectangle function
%  tri       - triangle function
%  sinc      - sin(pi*x)/(pi*x) function
%  sinc2     - sinc-squared function
%  randist   - Generates random numbers with various distributions
%  chirp     - Generates a chirp signal
%  ecgsim    - Generates a synthetic ECG (electrocardiogram) signal
%  operate   - Operations to generate x(at+b) vs t from x(t) vs t
%  periodic  - Generates a periodic signal from one period
%  perext    - Finds the periodic extension of a signal
%  evenodd   - Generates the even and odd part of a signal
%  enerpwr   - Computes energy or power in a signal
%
% MATHEMATICAL ANALYSIS
%  gcd1      - Greatest Common Divisor of integers
%  lcm1      - Least Common Multiple of integers
%  alog      - Antilog or dB to gain conversion
%  numdig    - Truncates or rounds to n significant digits
%  simpson   - Finds the area under a function over specified limits
%  oderk1    - Numerical solution of state eq. (1st order Runge Kutta)
%  oderk2    - Numerical solution of state equations (2nd order RK)
%  oderk4    - Numerical solution of state equations (4th order RK)
%  odesimp   - Numerical solution of state equations (Simpson's method)
%  polymap   - Converts a TF using polynomial transformations
%
% SPECIAL MATH FUNCTIONS
%  besin     - Bessel function I(x) of order n
%  besinu    - Sperical Bessel function i(x) of order nu
%  besjn     - Bessel function J(x) of order n
%  besjnu    - Spherical Bessel function of order nu
%  chebyfun  - Chebyshev polynomials T(x) and U(x) of order n
%  si        - Sine integral sin(at)/at
%  si2       - Sine-squared integral
%  cx        - Fresnel integral cx(x)
%  sx        - Fresnel integral sx(x)
%  gm        - (complete) gamma function
%  invsi     - Inverse of the sine integral
%  invsi2    - Inverse of the sine-squared integral
%  invsinc   - Inverse of the sinc function
%  invsinc2  - Inverse of the sinc squared function
%
% CONVOLUTION AND CORRELATION
%  convnum   - Numerical convolution
%  pairsum   - Estabilshes endpoints of convolution ranges
%  convplot  - Animated convolution
%  clt       - Demo of the Central Limit Theorem of convolution
%  convp     - Periodic convolution
%  convmat   - Generates the circulant matrix
%  corrp     - Periodic correlation
%  corrxy    - Regular correlation
%
% TIME DOMAIN ANALYSIS
%  sysresp1  - CT & DT response in SYMBOLIC form (time domain version)
%  ctsim     - simulation of CT systems using ODE routines
%  dtsim     - Recursive solution of DT systems
%
% LAPLACE AND z-TRANSFORM ANALYSIS
%  ltr       - Computes the Laplace transform
%  ztr       - Computes the z-transform
%  tf2pf     - Converts a TF to its partial fraction expansion
%  pf2tf     - Convert PF expansion form to a Transfer Function
%  ilt       - Inverse Laplace Transform in SYMBOLIC form
%  izt       - Inverse z-Transform in SYMBOLIC form
%  iztlong   - Inverse z-Transform by long division
%  plotpz    - Plots poles/zeros of CT & DT systems
%  ssresp    - Computes CT & DT steady state response in SYMBOLIC form
%  sysresp2  - CT & DT response in SYMBOLIC form (TF version)
%  tfplot    - Plots mag/phase of a CT or DT transfer function
%  splane3d  - Plots the 3D s-plane magnitude of H(s)
%  zplane3d  - Plots the 3D z-plane magnitude of H(z)
%  stablize  - Stabilizes an unstable H(s) or H(z)
%  tfmin     - Finds the minimum phase transfer function
%
% SAMPLING, QUANTIZATION AND RECOVERY 
%  interpol  - Signal interpolation using various methods
%  quantiz   - Rounds/truncates signal values to required levels
%
% FREQUENCY DOMAIN ANALYSIS
%  fseries   - Computes and plots Fourier coefficients and reconstructions
%  fsbuild   - Interactive Fourier series reconstruction from harmonics
%  fskernel  - Dirichlet and Fejer kernel for Fourier series
%  bodelin   - Plots asymptotic (and actual) Bode plots
%  modsig    - Generates AM, PM and FM signals
%  demodsig  - Demodulation of AM, PM and FM signals
%  wbfm      - Spectrum/bandwidth of wideband FM
%  fftplot   - Computes FFT and plots its magnitude and phase
%  alias     - Finds aliased analog and digital frequencies
%  aliasing  - Animation demo of aliasing and leakage
%  winfft    - Generates window functions for FFT aplications
%  winspec   - Plots spectra of windows and returns figures of merit
%  timefreq  - Plots time-grequency (waterfall) plots	
%  psdwelch  - Welch method of PSD estimation
%
% ANALOG FILTER DESIGN
%  afd       - Classical analog filter design
%  lpp       - Returns normalized analog lowpass prototypes
%  buttpole  - Plots and returns pole locations of Butterworth filters
%  chcoeff   - Coefficients of Chebyshev polynomial of order n
%  chebpole  - Geometric construction of pole locations of Chebyshev filter
%  attn      - dB attenuation of classical analog filters
%  delay     - Rational function expression for analog filter group delay
%  trbw      - Rise time, settling time and bandwidth of lowpass filters
%  conv2lpp  - Converts specs to those for a lowpass prototype
%  lp2af     - Analog filter transformations (LP2LP,LP2HP, LP2BP, LP2BS)
%  afdbess   - Bessel lowpass filter design
%  besstf    - Bessel filter transfer function of order n
%
% IIR FILTER DESIGN
%  dfdiir    - Design of IIR digital filters
%  s2zinvar  - s2z mapping based on numerical integration/differences
%  s2zmatch  - s2z mapping based on the matched z-transform
%  s2zni     - s2z mapping based on response invariance
%  lp2iir    - Analog or Digital prototype transformation to IIR filter
%  z2smap    - Converts H(z) to H(s) using various methods
%  dfdpzp3   - Interactive filter design by PZ placement (MATLAB 3)
%  dfdpzp4   - Interactive filter design by PZ placement (MATLAB 4)
%
% FIR FILTER DESIGN
%  lpsig     - Amplitude spectrum of linear phase signals
%  window    - Generates window functions for FIR filter design
%  fir2lpp   - Convert FIR specs to those for a lowpass prototype
%  firwind   - Window based FIR digital filter design
%  firhb     - Design of HALFBAND FIR digital filters
%  firpm     - Optimal filter design (Parks-McCllelan/Remez)
%  firmf     - Maximally flat FIR filter design
%  firdiff   - Design of FIR differentiators
%  firhilb   - Design of FIR Hilbert transformers
%  tfwelch   - Transfer function estimation using the Welch PSD