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Index for /tools/hpmatlab/toolbox/signal
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Readme
README file for the Signal Processing Toolbox
26 August 1992
Copyright (c) 1992-93 by The MathWorks, Inc.
$Revision: 1.7 $ $Date: 1993/08/19 21:48:16 $
New Signal Processing M-Files.
Here are some M-files that are NOT described in the user's guide
because they were added after printing:
czt Chirp-z transform.
sawtooth Sawtooth wave function.
mpoles Multiplicity of poles.
residuez Z-transform partial fraction expansion.
filtic Initial conditions for filter from previous data.
specgram Spectrogram for speech signals.
Use HELP on these files or TYPE them for more information.
Matlab files in this Directory
Contents Signal Processing Toolbox.
Readme README file for the Signal Processing Toolbox
abcdchk ABCDCHK Checks dimensional consistency of A,B,C,D matrices.
bartlett BARTLETT BARTLETT(N) returns the N-point Bartlett window.
bilinear BILINEAR Bilinear transformation with optional frequency prewarping.
blackman BLACKMAN BLACKMAN(N) returns the N-point Blackman window.
boxcar BOXCAR BOXCAR(N) returns the N-point rectangular window.
buttap BUTTAP Butterworth analog lowpass filter prototype.
butter BUTTER Butterworth digital and analog filter design.
buttord BUTTORD Butterworth filter order selection.
cceps CCEPS Complex cepstrum.
cheb1ap CHEB1AP Chebyshev type I analog lowpass filter prototype.
cheb1ord CHEB1ORD Chebyshev type I filter order selection.
cheb2ap CHEB2AP Chebyshev type II analog lowpass filter prototype.
cheb2ord CHEB2ORD Chebyshev type II filter order selection.
chebwin CHEBWIN Chebyshev window.
cheby1 CHEBY1 Chebyshev type I digital and analog filter design.
cheby2 CHEBY2 Chebyshev type II digital and analog filter design.
comb COMB Plot discrete sequence data.
convmtx CONVMTX Convolution matrix.
czt CZT Chirp z-transform.
decimate DECIMATE Resample data at a lower rate after lowpass filtering.
denf DENF Compute denominator from covariances.
detrend DETREND Remove a linear trend from a vector, usually for FFT processing.
dftmtx DFTMTX Discrete Fourier transform matrix.
ellip ELLIP Elliptic or Cauer digital and analog filter design.
ellipap ELLIPAP Elliptic analog lowpass filter prototype.
ellipord ELLIPORD Elliptic filter order selection.
fftfilt FFTFILT Overlap-add method of filtering using FFT.
filtdemo FILTDEMO Demonstrates filter design tools in the Signal Processing Toolbox.
filtfilt FILTFILT Zero-phase forward and reverse digital filtering.
filtic FILTIC Make initial conditions for 'filter' function.
fir1 FIR1 FIR filter design using the window method.
fir2 FIR2 FIR filter design using the window method - arbitrary filter shape.
freqs FREQS Laplace-transform (s-domain) frequency response.
freqz FREQZ Z-transform digital filter frequency response.
grpdelay GRPDELAY Group delay of a digital filter.
hamming HAMMING HAMMING(N) returns the N-point Hamming window.
hanning HANNING HANNING(N) returns the N-point Hanning window in a column vector.
hilbert HILBERT Hilbert transform.
interp INTERP Resample data at a higher rate using lowpass interpolation.
invfreqs INVFREQS Analog filter least squares fit to frequency response data.
invfreqz INVFREQZ Discrete filter least squares fit to frequency response data.
kaiser KAISER KAISER(N,beta) returns the BETA-valued N-point Kaiser window.
kratio KRATIO Utility function for use with ELLIP.
lp2bp LP2BP Lowpass to bandpass analog filter transformation.
lp2bs LP2BS Lowpass to bandstop analog filter transformation.
lp2hp LP2HP Lowpass to highpass analog filter transformation.
lp2lp LP2LP Lowpass to lowpass analog filter transformation.
mpoles MPOLES Identify repeated poles & their multiplicities.
numf NUMF Find numerator B given impulse-response h of B/A and denominator A
polystab POLYSTAB Polynomial stabilization.
prony PRONY Prony's method for time-domain IIR filter design.
rceps RCEPS Real cepstrum.
rcunwrap RCUNWRAP Phase unwrap utility used by CCEPS.
remez REMEZ Parks-McClellan optimal equiripple FIR filter design.
remezdd REMEZDD Lagrange interpolation coefficients.
residuez RESIDUEZ Z-transform partial-fraction expansion.
sawtooth SAWTOOTH Sawtooth and triangle wave generation.
specgram SPECGRAM Calculate spectrogram from signal.
specplot SPECPLOT Plot the output of the SPECTRUM function.
spectrum SPECTRUM Power spectrum estimate of one or two data sequences.
square SQUARE Square wave generation.
ss2zp SS2ZP State-space to zero-pole conversion.
tf2ss TF2SS Transfer function to state-space conversion.
triang TRIANG TRIANG(N) returns the N-point triangular window.
vratio VRATIO Utility function for use with ELLIP.
xcorr XCORR Cross-correlation function estimates.
xcorr2 XCORR2 Two-dimensional cross-correlation.
xcov XCOV Cross-covariance function estimates.
yulewalk YULEWALK Recursive filter design using a least-squares method.
zp2ss ZP2SS Zero-pole to state-space conversion.
besselap BESSELAP Bessel analog lowpass filter prototype.
besself BESSELF Bessel analog filter design.
cohere COHERE Coherence function estimate
csd CSD Cross Spectral Density estimate
cztdemo CZTDEMO Demonstrates the FFT and CZT in the Image Processing Toolbox.
dct DCT Discrete cosine transform.
demod DEMOD Signal demodulation for communications simulations.
diric DIRIC Dirichlet, or periodic sinc function
firls FIRLS Linear-phase FIR filter design using least-squares error minimization
freqint FREQINT Auto-ranging algorithm for Bode frequency response
freqspace FREQSPACE Frequency spacing for 2-D frequency responses.
housh HOUSH Construct a householder transformation H=I-s*UU'. Used in TZERO.
idct IDCT Inverse discrete cosine transform.
impinvar IMPINVAR Impulse invariance method for analog to digital filter conversion.
impz IMPZ Impulse response of digital filter
intfilt INTFILT Interpolation (and Decimation) FIR Filter Design
levinson LEVINSON Levinson-Durbin Recursion.
lpc LPC Linear Predictive Coding.
medfilt1 MEDFILT1 One dimensional median filter.
mltplcty MLTPLCTY Multiplicity of a pole
moddemo MODDEMO Demonstrates modulation and demodulation.
modulate MODULATE Signal modulation for communications simulations.
optargs OPTARGS Optional parameter arguments call string.
poly2rc POLY2RC Compute reflection coefficients from polynomial coefficients.
psd PSD Power Spectral Density estimate
psdchk PSDCHK Helper function for PSD, CSD, COHERE, TFE and SPECGRAM
rc2poly RC2POLY Compute polynomial coefficients from reflection coefficients.
remezord REMEZORD FIR order estimator (lowpass, highpass, bandpass, multiband)
remlpord REMLPORD FIR lowpass filter Length estimator
resample RESAMPLE Change the sampling rate of a signal
sinc SINC Sin(pi*x)/(pi*x) function
sineint SINEINT (a.k.a. SININT) Numerical Sine Integral
sos2ss SOS2SS Second-order sections to state space linear system model conversion
sos2tf SOS2TF 2nd-order sections to transfer function linear system model conversion
sos2zp SOS2ZP Second-order sections to zero-pole-gain linear system model conversion
sosdemo SOSDEMO Second Order Sections Demontration for the Signal Processing Toolbox.
specchk SPECCHK Helper function for SPECTRUM
ss2sos SS2SOS State-space to second-order sections linear system model conversion
ss2tf SS2TF State-space to transfer function conversion.
stmcb STMCB Compute linear model via Steiglitz-McBride iteration
strips STRIPS Strip plot.
tf2zp TF2ZP Transfer function to zero-pole conversion.
tfchk TFCHK Check for proper transfer function.
tfe TFE Transfer Function Estimate
tzero TZERO Transmission zeros.
tzreduce TZREDUCE Extract from the system (A,B,C,D) the reduced system
vco VCO Voltage controlled oscillator
zp2sos ZP2SOS Zero-pole-gain to second-order sections linear system model conversion.
zp2tf ZP2TF Zero-pole to transfer function conversion.
zplane ZPLANE Z-plane zero-pole plot