A/D conversion
abs
ac2poly
ac2rc
aliased sinc functions
    command for
aliasing
    impulse invariance
    preventing
    reducing
all-pole filters. See IIR filters
all-zero filters. See FIR filters
am
AM. See amplitude modulation
amdsb-sc <1> <2>
amdsb-tc <1> <2>
amplitude demodulation
    double side-band, suppressed carrier
    double side-band, transmitted carrier
    single side-band
amplitude modulation
    double side-band, suppressed carrier
    double side-band, transmitted carrier
    quadrature
    single side-band
amssb <1> <2>
analog filters
    bandpass
    bandstop
    Bessel <1> <2> <3> <4>
    bilinear transformation
    Butterworth <1> <2> <3> <4> <5>
    Chebyshev
    Chebyshev type I <1> <2> <3>
    Chebyshev type II <1> <2>
    converting to digital <1> <2>
    design
    discretization
    elliptic <1> <2>
    frequency response <1> <2> <3>
    highpass
    impulse invariance
    inverse
    lowpass
    order estimation
        Butterworth
        Chebyshev type I <1> <2>
        Chebyshev type II
        elliptic
    plotting
    representational models
    See also IIR filters
analog frequency
analog signals. See signals
analytic signals
angle
anti-symmetric filters
AR filters, stability check
AR models. See autoregressive (AR) models
arburg <1> <2>
arcov <1> <2>
ARMA filters <1> <2> <3>
    Prony's method
    Steiglitz-McBride method
    See also IIR filters
armcov <1> <2>
ARX models
aryule <1> <2>
ASCII files, importing
autocorrelation <1> <2>
autocorrelation sequences
    converting from reflection coefficients
    estimation, variance
    filter coefficients
        converting to and from <1> <2> <3>
    filters, multiple channels
    two-dimensional
autocovariance
    multiple channels
autoregressive (AR) models
    Burg method <1> <2> <3>
    covariance method <1> <2>
    modified covariance method <1> <2> <3>
    Yule-Walker AR method <1> <2> <3>
    See also IIR filters
autoregressive moving average (ARMA) filters. See ARMA filters
averaging filters
axis labels
axis parameters
    Filter Viewer
    Spectrum Viewer

band edges, prewarping
bandlimited interpolation
bandpass filters <1> <2> <3> <4>
    Bessel
    Butterworth
    Chebyshev type I <1> <2>
    Chebyshev type II
    design
    elliptic
    example, Chebyshev type I
    FIR <1> <2>
    impulse invariance
    transformation from lowpass to
bandstop filters <1> <2> <3> <4> <5>
    Bessel
    Butterworth
    Chebyshev type I
    Chebyshev type II
    elliptic
    FIR <1> <2>
    transformation from lowpass to
bandwidth
bartlett <1> <2>
    example
    triang, comparison to
Bartlett windows
    coefficients
Bessel filters <1> <2> <3>
    bandpass
    bandstop
    characteristics
    highpass
    limitations
    lowpass
    roots
besselap <1> <2>
    example
besself <1> <2> <3>
bias
    correlation <1> <2>
    power spectral density <1> <2> <3>
    variance trade-off
bilinear <1> <2> <3> <4>
bilinear transformations <1> <2> <3>
    output representation
    prewarping <1> <2>
blackman <1> <2>
Blackman windows <1> <2>
boxcar <1> <2>
    example
boxcar windows. See rectangular windows
brackets, indicating closed interval
buffering
Burg method <1> <2> <3>
    example
    Welch's method, comparison
buttap <1> <2>
    example
butter <1> <2> <3>
Butterworth filters <1> <2> <3>
    bandpass
    bandstop
    characteristics
    design
    generalized
    highpass
    limitations
    lowpass
    order estimation <1> <2>
buttord <1> <2>

canonical forms <1> <2>
carrier frequency <1> <2> <3>
carrier signals <1> <2>
cascade, filters
Cauer filters. See elliptic filters
cceps <1> <2> <3>
    example
cell2sos
center frequency
central features
cepstrum
    analysis
    applications
    complex
    inverse <1> <2>
    overview
    real <1> <2> <3>
    reconstructing signals (minimum-phase)
cheb1ap <1> <2>
    example <1> <2>
cheb1ord <1> <2>
cheb2ap <1> <2>
    example
cheb2ord <1> <2>
chebwin <1> <2> <3>
cheby1 <1> <2> <3>
    example
cheby2 <1> <2> <3>
Chebyshev error minimization <1> <2>
Chebyshev type I filters <1> <2> <3> <4>
    bandpass <1> <2>
    bandstop
    characteristics
    design
    highpass
    lowpass
    order estimation <1> <2>
Chebyshev type II filters <1> <2>
    bandpass
    bandstop
    characteristics
    highpass
    limitations
    lowpass
    order estimation
Chebyshev windows <1> <2>
    frequency response
chirp <1> <2>
chirp signals
chirp z-transforms (CZT) <1> <2>
    discrete Fourier transforms, comparison
    frequency analysis, narrowband
coding, PCM
coefficients
    correlation
    filter <1> <2> <3> <4> <5> <6>
    linear prediction
    reflection <1> <2> <3> <4> <5>
    sequence
cohere <1> <2> <3>
    linearly dependent data
coherence <1> <2>
    linearly dependent data
colors, SPTool
communications <1> <2> <3>
    See also modulation, demodulation, voltage controlled oscillation
communications simulation
compact disc standards
compaction
complex conjugate
complex envelope. See Hilbert transforms
complex numbers, grouping by conjugate
confidence intervals
    cross spectral density
    power spectral density
    warnings
context-sensitive help <1> <2>
continuous signals. See signals
continuous-time filters. See analog filters
control systems
Control Systems Toolbox <1> <2> <3>
conv <1> <2> <3>
conv2 <1> <2>
conventions in our documentation (table)
conversions
    autocorrelation sequences to and from filter coefficients
    autocorrelation sequences to and from reflection coefficients
    filter coefficients to autocorrelation sequences
    filter coefficients to reflection coefficients <1> <2>
    functions (table)
    reflection coefficients to autocorrelation sequences
    second-order section forms to state-space forms
    second-order section forms to transfer functions
    second-order section forms to zero-pole-gain forms
    state-space forms to second-order section forms
    state-space forms to zero-pole-gain forms
    transfer functions to lattice forms
    transfer functions to second-order section forms
    transfer functions to state-space forms
    zero-pole-gain forms to second-order section forms
    zero-pole-gain forms to state-space forms
convmtx <1> <2> <3>
convolution
    cross-correlation
    example
    filtering <1> <2>
    matrices for <1> <2> <3>
        example
    two-dimensional
corrcoef
correlation
    bias <1> <2>
    coefficient matrices
    cross-correlation
    matrices
        covariance method
        modified covariance method
    See also autocorrelation sequences, cross-correlation sequences
correlation matrices
corrmtx
cosine windows
cov
covariance
    matrices
    See also autocovariance, cross-covariance
covariance method <1> <2> <3>
    example
    See also modified covariance method
cplxpair
cremez <1> <2>
cross spectral density <1> <2>
    confidence intervals
    See also power spectral density, spectral estimation
cross-correlation sequences
    estimation
        biased
        unbiased
    filters, multiple channels
    normalization
    two-dimensional
cross-covariance <1> <2>
    multiple channels
csd <1> <2> <3>
cutoff frequency <1> <2>
czt <1> <2>
CZT. See chirp z-transforms

D.C. component suppression
data
    multichannel <1> <2>
    vectors
data compression
data matrices <1> <2>
data vectors
dct <1> <2>
    example
decimate
decimation
    FIR filter for
decoding
deconv <1> <2>
    example
deconvolution <1> <2>
default session file
delays
    group
    noninteger
    phase
    signals
demod <1> <2> <3>
    example
demodulation <1> <2>
    amplitude, quadrature
    example
    methods <1> <2>
    phase
    pulse time
    pulse width
DFT. See discrete Fourier transforms
dftmtx
difference equations
differentiators <1> <2> <3>
digital audio tape standards
digital filters
    anti-causal
    Butterworth
    cascade
    Chebyshev type I
    Chebyshev type II
    coefficients
    convolution matrices
    design
    elliptic
    FIR
        IIR, comparison to
    fixed-point implementation
    frequency data, identification from
    frequency response
    group delay <1> <2>
    IIR
        FIR filters, comparison to
    implementation <1> <2> <3>
        convolution
        FFT-based (FIR)
        filter
        overlap-add method
    impulse response <1> <2> <3>
    initial conditions
    linear models
    models
    names
    order
        state-space representation
    order estimation
        Butterworth <1> <2> <3>
        Chebyshev type I <1> <2>
        Chebyshev type II
        elliptic
        equiripple FIR
    phase delays <1> <2>
    poles <1> <2>
    second-order sections
    specifications
    startup transients
    structures
        lattice/ladder
        “]’u direct form II
    time-domain representation
    transfer functions representation
    transients
    two-dimensional
    zero-phase <1> <2>
    zeros <1> <2>
    See also FIR filters, IIR filters
digital frequency
direct design
diric
Dirichlet functions
    command for
discrete cosine transforms (DCT)
    applications
    energy compaction property
    example
    inverse <1> <2>
    signals, reconstructing
discrete Fourier transforms (DFT) <1> <2> <3> <4>
    algorithms
    applications
    eigenvector equivalent
    example
    IIR filter implementation
    inverse <1> <2>
        matrices
        two-dimensional <1> <2>
    magnitude
    matrices
    phase
    signal length dependencies
    spectral analysis <1> <2>
    time-dependent
    two-dimensional <1> <2>
    See also fast Fourier transforms (FFT), fft
discrete prolate spheroidal sequences
     See DPSS
discretization
    bilinear transformations
        prewarping
    impulse invariance
discretization, filters
disk, loading variables from
division, polynomials
DPSS
    direct method
    interpolation
dpss
dpss.mat
dpssclear <1> <2>
dpssdir <1> <2>
dpssload <1> <2>
dpsssave <1> <2>
duty cycles

echoes, detection
edge effects
eigenanalysis
    frequency estimation
eigenvector method <1> <2> <3>
    root MUSIC
    See also multiple signal classification method
ellip <1> <2> <3>
ellipap <1> <2>
    example
ellipord <1> <2> <3>
elliptic filters <1> <2>
    bandpass
    bandstop
    characteristics
    highpass
    limitations
    lowpass
    order estimation <1> <2> <3>
encoding
    PCM
    uniform
eqtflength
equiripple characteristics
    Chebyshev type I filters (passband)
    Chebyshev type II filters (stopband)
    Chebyshev windows
    elliptic filters <1> <2> <3>
    Parks-McClellan design
equiripple filters
error minimization
    desired and actual response, between
    frequency bands, weighting
    minimax
estimation
    cross spectral density
    nonparametric
        multiple signal classification method (MUSIC)
        multitaper method (MTM)
        Welch's method
    parametric
        Burg method
        covariance method
        modified covariance method
        Yule-Walker method
    spectral density <1> <2>
    transfer functions
    See also parametric modeling

fast Fourier transforms (FFT) <1> <2>
    fft
    frequency response
    radix-2 algorithm
    signal processing, role in
    two-dimensional
fdatool
    context-sensitive help
    help on <1> <2>
    opening
fft <1> <2> <3> <4>
    example
    execution time
    number of samples
    output <1> <2>
    radix-2 algorithm
FFT filtering
FFT. See fast Fourier transforms
fft2 <1> <2>
    output
fftfilt <1> <2>
    filter, comparison to
fftshift <1> <2> <3>
filter
    coefficients
    median
    order
filter <1> <2> <3> <4>
    fftfilt, comparison to
    filtfilt, comparison
    final condition parameters
    implementation
    initial condition parameters
    initial conditions
filter coefficients
    reflection coefficients, conversions to <1> <2>
filter design graphical user interface. See fdatool
filter design GUI
    analysis buttons
    analysis functions
    computing coefficients
    context-sensitive help
    design methods
    design sessions
        opening
        saving
    exporting filters
    filter design specification
    filter order specification
    filter type
    filters
        architecture
        implementation
        realization
        structure
    frequency response specification
    group delay
    help on
    importing coefficients
    importing filters
    impulse response
    magnitude response
    magnitude response specs
    opening
    phase delay
    phase response
    pole-zero plots
    saving coefficients
    step response
Filter Designer <1> <2>
    FFT length
    filter types
    filters
        editing
        redesigning
        saving
    FIR filters
    FIR methods
    grid lines
    IIR methods
    opening <1> <2>
    overview
    plots
        customizing
        magnitude
    Pole/Zero Editor
    sample frequency
    spectra, overlaying
    zooming
filter parameters
Filter Viewer <1> <2>
    axis parameters
    customizing
    filter parameters
    measurements
    opening
    overview
    preferences, tiling
    printing
    rulers
    zooming
filter2
filters
    analog <1> <2> <3> <4> <5>
    anti-causal
    anti-symmetric
    averaging
    bandpass
        Butterworth
        Chebyshev type I
        Chebyshev type II
        elliptic
    bandstop
        Butterworth
        Chebyshev type I
        Chebyshev type II
        elliptic
    Butterworth <1> <2>
        generalized
    Chebyshev
        type I
        type II
    coefficients <1> <2> <3> <4>
        converting to autocorrelation sequence
    convolution
    creating
    design
        Filter Designer
        FIR
        generalized
    discretization
    elliptic <1> <2>
    equiripple
    FIR
        single band
    frequency data, identification from
    frequency domain
    frequency transformation functions <1> <2>
    highpass
        Butterworth
        Chebyshev type I
        Chebyshev type II
        elliptic
    implementation <1> <2> <3>
    initial conditions <1> <2>
    inverse <1> <2>
    lattice/ladder
    linear phase <1> <2>
    linear time-invariant digital
    lowpass
        Butterworth
        Chebyshev type I
        Chebyshev type II
        elliptic
    measurements
    median
    minimax
    minimum phase
    names
    order <1> <2> <3> <4> <5> <6>
    order estimation
    phase, modulation
    prediction
    quantized, state vectors
    Savitzky-Golay <1> <2>
    Schur realizations
    second-order section forms <1> <2> <3>
    specifications
    SPTool
    transposed direct form II structure
    two-dimensional
    types
    zero-phase <1> <2>
    See also FIR filters, IIR filters, digital filters, analog filters
filtfilt <1> <2> <3> <4>
    example
    filter, comparison
    initial conditions
filtic <1> <2>
FIR filters <1> <2>
    decimation
    differentiators <1> <2> <3>
    equiripple <1> <2> <3>
    example
    Filter Designer
    frequency domain
    frequency response
    Hilbert transformers <1> <2> <3>
    IIR filters, comparison
    implementation <1> <2>
        FFT-based <1> <2>
        overlap-add method <1> <2>
    interpolation
    Kaiser windows
    lattice/ladder
    least squares <1> <2> <3>
        constrained <1> <2>
        equiripple, comparison
        linear phase
        multiband <1> <2>
        weighted
    linear phase <1> <2> <3> <4>
    multiband <1> <2> <3>
    order estimation, remez
    overlap-add method
    Parks-McClellan method <1> <2>
    raised cosine method
    resampling
    responses
        complex filters <1> <2>
        delays, reducing
        nonlinear phase <1> <2>
    standard band
    types <1> <2>
    windowing method
    windows <1> <2>
fir1 <1> <2>
fir2 <1> <2>
fircls <1> <2>
fircls1 <1> <2>
firls <1> <2> <3>
    differentiators
    filter characteristics
    remez, comparison to
    weight vectors
firrcos <1> <2>
fixed-point implementation, digital filters
fm
FM. See frequency modulation
fopen
Fourier transforms. See discrete Fourier transforms, fast Fourier transforms
fread
freqs <1> <2>
freqspace
frequency
    analog
    angular
    carrier <1> <2> <3>
    center
    cutoff
    digital
    estimation
        eigenanalysis
        eigenvector (EV) method
        multiple signal classification (MUSIC) method
    normalization
    Nyquist <1> <2>
    prewarping
    vectors <1> <2> <3> <4>
frequency analysis, time-dependent
frequency demodulation
frequency domain
    duality with time-domain
    filters
    FIR filtering
    transformation functions <1> <2> <3> <4> <5>
        example
        lowpass to bandpass
        lowpass to bandstop
        lowpass to highpass
frequency domain based modeling. See parametric modeling
frequency modulation
frequency response <1> <2> <3>
    Bessel filters
    Butterworth filters
    Chebyshev type I filters
    Chebyshev type II filters
    Chebyshev windows
    elliptic filters
    error minimization
    evaluating
    example
    inverse
    Kaiser window
    linear phase
    magnitude
    monotonic
    multiband
    phase
        unwrapping
    plotting <1> <2>
    samples, spacing
    sampling frequency
frequency vectors
freqz <1> <2>
    sampling frequencies
    sampling frequency
    spacing
freqzplot
From Disk radio button
fscanf

gains, scalar
gauspuls <1> <2> <3> <4> <5>
Gauss-Newton method <1> <2>
generalized Butterworth filters
generalized cosine windows
generalized filters
Gibbs effect
    reduced by window
graphical user interface (GUI)
    See also interactive tools, SPTool
grid lines
group delay <1> <2> <3>
    example
    passband
grpdelay <1> <2>
GUI-based tools. See interactive tools

hamming <1> <2>
Hamming windows <1> <2> <3> <4>
hann
Hann windows
Hanning windows <1> <2>
hanning. See hann
highpass filters <1> <2> <3> <4> <5>
    Bessel
    Butterworth
    Chebyshev type I
    Chebyshev type II
    elliptic
    FIR <1> <2>
    lowpass, transformation from
hilbert <1> <2>
    example
Hilbert transformers <1> <2>
Hilbert transforms <1> <2> <3>
    analytic signals, of
    example
    instantaneous attributes
homomorphic systems
Hz <1> <2> <3> <4>

icceps <1> <2> <3>
    example
idct <1> <2>
ideal lowpass filters
    See also lowpass filters
ifft <1> <2>
    samples, specifying
ifft2 <1> <2> <3>
IIR filters <1> <2> <3> <4> <5>
    Bessel
    Butterworth <1> <2>
    Butterworth, generalized
    Chebyshev <1> <2> <3>
    Chebyshev type I
    Chebyshev type II
    design <1> <2>
    elliptic <1> <2>
    Filter Designer
    filter types, comparison
    FIR filters, comparison to
    frequency response
    implementation
        frequency domain
        zero-phase
    lattice/ladder
    Levinson-Durbin recursion
    maximally flat
    multiband
    order estimation
    plotting responses
    Prony's method
    specifications
    Steiglitz-McBride iteration
    Yule-Walker <1> <2>
    See also direct design
image processing <1> <2>
impinvar <1> <2> <3>
Import dialog box
    From Disk radio button
    Workspace Contents list
impulse invariance <1> <2>
    limitations
impulse response <1> <2>
    computing with filter
    computing with impz
    example
    impulse invariance
    lowpass filters, ideal
impz
    example
indexing
initial conditions <1> <2> <3> <4>
instantaneous attributes
interactive tools <1> <2>
    example
    Filter Design and Analysis Tool
    Filter Designer <1> <2>
    Filter Viewer
    Signal Browser
    Spectrum Viewer <1> <2>
    SPTool
interp
interpolation
    bandlimited
    FIR filters
interval notation
intfilt
inverse cepstrum, complex
inverse discrete cosine transforms
    accuracy of signal reconstruction
inverse discrete Fourier transforms <1> <2>
    ifft
    matrices
    two-dimensional <1> <2>
inverse filters <1> <2>
    analog
    digital
inverse Fourier transforms, continuous. See sinc
inverse-sine parameters
    reflection coefficients, transformations from
    reflection coefficients, transformations to
invfreqs <1> <2> <3> <4>
invfreqz <1> <2> <3> <4>
is2rc

kaiser <1> <2>
    example
Kaiser window
Kaiser windows <1> <2>
    beta parameter <1> <2>
    example
    FIR filters
    frequency response
kaiserord <1> <2>

ladder filters. See lattice/ladder filters
Lagrange interpolation filter
Laplace transforms
    state-space forms
lar2rc
latc2tf <1> <2> <3>
latcfilt <1> <2> <3>
lattice/ladder filters <1> <2> <3>
    coefficients
    latcfilt
    Schur algorithm
    transfer functions, conversions from
least squares method, FIR filters <1> <2>
levinson <1> <2> <3>
    parametric modeling
Levinson-Durbin recursion <1> <2> <3>
line spectral frequencies
    prediction polynomial coefficients, transformation from
    prediction polynomial coefficients, transformation to
line style, SPTool
linear models. See models
linear phase <1> <2> <3>
    characteristics
    filters
linear prediction coefficients
linear prediction modeling
linear predictive coding
linear system transformations. See conversions
load
log area ration parameters
    reflection coefficients, transformations from
    reflection coefficients, transformations to
lowpass filters <1> <2> <3> <4> <5>
    Bessel
    Butterworth
    Chebyshev type I
    Chebyshev type II
    cutoff frequency, translation of
    decimation
    elliptic
    FIR
    ideal
    impulse invariance
    impulse response
    interpolation
lp2bp <1> <2> <3>
    example
lp2bs <1> <2> <3>
lp2hp <1> <2> <3>
lp2lp <1> <2> <3>
lpc <1> <2> <3>
    See also linear predictive coding, Prony's method
LPC. See linear prediction coefficients
lsf2poly

magnitude
    Fourier transforms
    frequency response
    plots
    transfer functions
    vectors <1> <2> <3> <4>
manufacturing
match frequency (for prewarping)
MAT-files
    dpss.mat
    format, converting to
    importing
    SPTool
matrices
    convolution <1> <2>
    correlation coefficient
    covariance
    data <1> <2>
    discrete Fourier transforms
    inverse discrete Fourier transforms
matrix forms. See state-space forms
maxflat <1> <2> <3>
maximally flat filters
medfilt1 <1> <2>
median filters <1> <2>
MEX-files
M-files
minimax method, FIR filters
    See also Parks-McClellan method
minimum phase
models
    autoregressive <1> <2> <3> <4>
        Burg method <1> <2>
        covariance method
        modified covariance method <1> <2>
        Yule-Walker AR method <1> <2>
    bilinear transformations
    transformations, discrete/continuous
modified covariance method
    example
modulate <1> <2> <3>
    example
    method flags
modulation <1> <2>
    amplitude
        See also amplitude modulation
    example
    frequency
    phase
    pulse time
    pulse width
    quadrature amplitude
    results of
    signals <1> <2>
moving average (MA) filters
    See also FIR filters
MTM. See multitaper method
multiband filters
    FIR
    FIR, with transition bands
    IIR
multichannel data
multiple signal classification method (MUSIC) <1> <2> <3> <4> <5>
    correlation matrices
    eigenvector method <1> <2>
    root music
multiplication, polynomials
multiplicity, of zeros and poles
multirate filters
    banks
multitaper method (MTM) <1> <2> <3>
    average power, conservation of
    example
    Welch's method, comparison to
MUSIC algorithm. See multiple signal classification method

nonrecursive filters. See FIR filters
normalization
    correlation <1> <2> <3>
    power spectral density <1> <2> <3>
Nyquist frequency <1> <2> <3>
Nyquist interval

order
    estimation <1> <2>
        Butterworth
        Chebyshev type I
        elliptic <1> <2>
    filters, of <1> <2>
oscillators, voltage controlled
overlap-add method
    FIR filter implementation
    FIR filters

Panner check box, Signal Browser
parametric modeling <1> <2>
    applications
    frequency domain based
    summary
    techniques
    time-domain based
        Burg method
        covariance method
        linear predictive coding <1> <2>
        modified covariance method
        Steiglitz-McBride method
        Yule-Walker method
parentheses, indicating open interval
Parks-McClellan method <1> <2>
partial fraction expansion <1> <2> <3> <4>
    determining with residue
    example
passband <1> <2> <3> <4>
    equiripple <1> <2>
    group delay
pburg <1> <2> <3>
    example
PCM
pcov <1> <2> <3>
    example
peig
peig
period, finding in a sequence
periodic sinc functions
    See also Dirichlet functions
periodogram
periodograms <1> <2> <3>
phase
    computing
    delays <1> <2> <3>
        example
    demodulation
    distortion
        eliminating <1> <2>
        FIR filters
        IIR filters
    Fourier transforms
    frequency response
    modulation <1> <2>
        filters
    transfer functions, of
    unwrapping <1> <2>
plots
    analog filters
    cepstrum, complex
    coherence function
    DFT
    frequency response
    functions for
    group delay
    magnitude <1> <2>
    phase
        delays
    strip plots
    transfer functions
    zero-pole <1> <2>
plotting functions
plug-ins
pm
pmcov <1> <2> <3>
    example
p-model. See parametric modeling
pmtm <1> <2>
    example
pmusic <1> <2> <3>
Pole/Zero Editor
pole-zero filters. See IIR filters
poly <1> <2>
poly2ac
poly2lsf
poly2rc
polynomials
    division <1> <2>
    multiplication
    roots <1> <2>
    scaling
    stability check
    stabilization
polyphase filtering techniques
polystab <1> <2>
power spectral density
    bias <1> <2> <3>
    confidence intervals
    estimation
        Burg method <1> <2> <3>
        covariance method <1> <2> <3>
        modified covariance method <1> <2>
        multitaper method <1> <2>
        MUSIC method <1> <2>
        root music <1> <2>
        Welch's method <1> <2> <3>
        Yule-Walker AR method <1> <2> <3>
    multitaper method
    MUSIC method
    normalization <1> <2> <3>
    plots
    Spectrum Viewer
    SPTool
    units of
prediction filters
prediction polynomials
    line spectral frequencies, transformations from
    line spectral frequencies, transformations to
Preferences menu item
prewarping
Print dialog box <1> <2>
Print Preview window
    Signal Browser preferences
    Spectrum Viewer
printing, Spectrum Viewer
prolate-spheroidal windows
prony <1> <2> <3> <4>
Prony's method <1> <2>
    modeling
psdplot
pseudospectrum
    eigenvector method <1> <2>
    MUSIC algorithm
ptm
pulse time demodulation
pulse time modulation <1> <2>
pulse train generator
pulse trains
    generating
    pulstran
pulse width demodulation
pulse width modulation <1> <2>
pulstran <1> <2>
pwelch <1> <2> <3>
pwm
pyulear <1> <2> <3>
    example <1> <2>

qam
quadrature amplitude demodulation
quadrature amplitude modulation <1> <2>
quantization <1> <2>
    PCM
quantized filters
    second-order sections
        coefficients in a cell array
        coefficients in a matrix

radar applications
raised cosine filters
randn
random number, generation
range notation
rc2is
rc2lar
rc2poly
rceps <1> <2> <3>
rebuffering
rectangular windows <1> <2> <3>
rectpuls
recursive filters. See IIR filters
references <1> <2> <3>
reflection coefficients <1> <2>
    converting to autocorrelation sequence
    filter coefficients, conversions from <1> <2>
    inverse sine parameters, transformation from
    inverse sine parameters, transformation to
    log area ratio parameters, transformation from
    log area ratio parameters, transformation to
    Schur algorithm
remez <1> <2> <3>
    differentiators
    filter characteristics
    firls, comparison to
    Hilbert transformers
    order estimation
    weight vectors
Remez exchange algorithm <1> <2>
remezord <1> <2>
resample
resampling <1> <2>
    FIR filters
    See also decimation, interpolation
residue <1> <2> <3>
residue forms. See partial fraction expansion
residuez <1> <2>
rlevinson
root MUSIC
    eigenvector method
rooteig
rootmusic
roots <1> <2>
    polynomials
rulers
    customizing
    positioning
    Signal Browser
    Spectrum Viewer

sampling frequency
    changing
        noninteger resampling factors <1> <2>
        with upfirdn
    decreasing by integer factor
    FIR filters
    freqz
    increasing
    irregularly spaced data
    Nyquist interval
    range
    spacing
saving data
    Spectrum Viewer
Savitzky-Golay filters <1> <2>
sawtooth <1> <2> <3>
sawtooth wave
scaling
schur
Schur algorithm
schurrc
second-order section forms <1> <2>
    filters
    matrices
    SPTool
    state-space forms, conversions from
    state-space forms, conversions to
    transfer functions, conversions from <1> <2>
    zero-pole-gain forms, conversions from
    zero-pole-gain forms, conversions to
second-order sections
    coefficients in cell arrays
    coefficients in matrices
seqperiod
sgolay <1> <2>
sgolayfilt
Signal Browser <1> <2>
    axis labels
    customizing
    markers, preferences
    opening
    overview
    Panner, preferences
    Print Preview window
    printing <1> <2> <3> <4>
    signals, measuring
    zooming, preferences
Signal Processing Toolbox
signals
    adding noise
    analytic <1> <2>
    aperiodic
    applications
    array
    buffering
    carrier <1> <2>
    chirp
    continuous (analog)
    differentiators
    diric
    discrete (digital)
    generating
    linear swept-frequency cosine. See chirp
    measurements
    modulation <1> <2>
    multichannel
    periodic
    plotting
    properties
    pulstran
    rebuffering
    reconstruction
        DCT coefficients, from
        minimum phase <1> <2>
    representing
        multichannel
        single channel
    sawtooth <1> <2>
        example
    sinc
    sinusoidal <1> <2>
        pulse, Gaussian-modulated
    square wave <1> <2>
    triangle
sinc <1> <2>
    bandlimited interpolation example
sinc functions <1> <2>
    basic example
Slepian sequences. See discrete prolate spheroidal sequences
sonar applications
sos2cell
sos2ss <1> <2>
sos2tf <1> <2>
sos2zp <1> <2>
specgram <1> <2>
    example <1> <2>
specification lines. See Filter Designer
specifications, filters
spectra. See spectrum
spectral analysis
    cross spectral density
    power spectrum
    Spectrum Viewer
    See also spectral estimation
spectral density
    measurements
    plotting functions
    Spectrum Viewer
    units of
    See also power spectral density, cross spectral density
spectral density plots
spectral estimation
    Burg method <1> <2> <3> <4>
    covariance method <1> <2>
    eigenvector method <1> <2> <3>
    modified covariance method <1> <2>
    multitaper method <1> <2>
    MUSIC algorithm <1> <2>
    MUSIC method <1> <2>
    nonparametric
        multiple signal classification method (MUSIC)
        multitaper method (MTM)
        Welch's method
    parametric
        Burg method
        covariance method
        modified covariance method
        Yule-Walker method
    periodograms
    root MUSIC <1> <2>
    Welch's method <1> <2> <3> <4> <5> <6> <7> <8> <9>
    Yule-Walker AR method <1> <2> <3> <4> <5> <6> <7>
spectrogram <1> <2>
    example <1> <2>
Spectrum Viewer <1> <2>
    activating
    axis parameters
    customizing
    markers, preferences
    measurements
    opening
    overview
    Print Preview
    printing <1> <2> <3>
    rulers
    spectra structures
    spectral density plots
    windows
    zooming
speech processing <1> <2>
spline
SPTool <1> <2>
    colors, customizing
    context-sensitive help
    customizing
    data
        entering
        objects
        selecting
    data structures
    editing
    example
    exporting data <1> <2>
    filter design
    filtering
    filters
        coefficients
        importing <1> <2>
        parameters
        specifications
    filters, saving
    help on
    Import dialog
    importing <1> <2> <3> <4>
    items, selecting
    line style, customizing
    MAT-files
    MATLAB workspace
    multiselection of items
    operation
    Pole/Zero Editor
    preferences
    Preferences menu item
    Print dialog box <1> <2>
    printing
        filters
        spectra
    right-click edit menu
    rulers
        customizing
    sample frequency
    saving
    second-order section forms
    Signal Browser
    signals
        analysis
        measurements
        playing
    sound
    spectra
        analyzing
        importing
    spectral densities
        importing <1> <2>
        plots
    Spectrum Viewer
    state-space forms
    transfer functions
        exporting
        specifying
    workspace
    zero-pole-gain forms
sptool
square <1> <2>
square wave
ss2sos <1> <2>
ss2tf <1> <2>
ss2zp <1> <2>
stability check, polynomials
stabilization
standards, digital audio tape
startup transients, reducing <1> <2>
state vectors
state-space forms <1> <2> <3>
    scalar
    second-order section forms, conversions from
    second-order section forms, conversions to
    SPTool
    transfer functions, conversions to
    zero-pole-gain forms, conversions from
    zero-pole-gain forms, convertions to
statistical operations
    See also autocorrelation sequences, cross-correlation sequences, cross-covariance
Steiglitz-McBride method <1> <2>
stmcb <1> <2> <3> <4>
stopband <1> <2> <3> <4>
    equiripple
strip plots
strips
structures
    lattice/ladder
    transposed direct form II
structures, digital filters
    lattice/ladder
    transposed direct form II
swept-frequency cosine generator. See chirp
system identification
system models. See models

tapers, PSD estimates
taps
tf2latc <1> <2> <3>
tf2ss <1> <2>
tf2zp <1> <2> <3>
tfe <1> <2> <3>
tiling preferences
time series attributes
time-domain based modeling. See parametric modeling
toolboxes
    Control Systems Toolbox <1> <2> <3>
    Image Processing Toolbox <1> <2> <3>
    Signal Processing Toolbox
    Symbolic Math Toolbox
    System Identification Toolbox
transfer functions <1> <2> <3> <4>
    coefficients <1> <2>
    estimation
        using Welch's method
    factoring
    lattice forms, conversions to
    second-order section forms, conversions from
    second-order section forms, conversions to
    SPTool
    state-space forms, conversions to
    zero-pole-gain forms
transformations
    bilinear <1> <2>
    discrete/continuous
    frequency <1> <2> <3> <4> <5>
    models, between
transforms
    chirp z-transforms (CZT) <1> <2>
    discrete cosine
    discrete Fourier <1> <2>
    Hilbert <1> <2>
    inverse discrete cosine <1> <2>
    inverse discrete Fourier
transients, filters
transition band
transposed direct form II
    initial conditions
triang <1> <2>
    bartlett, comparison to
    example
triangular windows
tripuls
two-dimensional operations
    discrete Fourier transforms <1> <2>
    inverse discrete Fourier transforms <1> <2>
    See also filters, two-dimensional
two-dimensional signal processing

udecode
uencode
uniform encoding
unit circle
unit impulse function
unit ramp function
unit sample, multichannel representation
unit step function
units of power spectral density (PSD)
unwrap <1> <2>
upfirdn <1> <2> <3>

variance, correlation sequence estimate
vco <1> <2> <3>
vectors
    data <1> <2>
    frequency <1> <2> <3> <4> <5>
    indexing <1> <2>
    magnitude <1> <2> <3> <4>
    weighting
voltage controlled oscillators <1> <2>

waveforms. See signals
Welch's method <1> <2>
    bias
    Burg method, comparison to
    MTM method, comparison to
    normalization
    power spectral density estimation <1> <2> <3> <4> <5> <6>
    system identification, nonparametric
    Yule-Walker AR method, comparison to
white noise
windows
    Bartlett <1> <2>
    Blackman <1> <2>
    boxcar
    Chebyshev <1> <2>
    cosine, generalized
    filters
    FIR filters
        bandpass
        bandstop
        highpass
        lowpass
        multiband filters
        single band design
    fir1
    generalized cosine
    Hamming <1> <2> <3> <4>
    Hann
    Hanning <1> <2>
    Kaiser <1> <2> <3>
    periodograms <1> <2>
    prolate-spheroidal
    rectangular <1> <2>
    shapes
    triangular
Workspace Contents list

xcorr <1> <2>
    parametric modeling
xcorr2
xcov <1> <2>

yulewalk <1> <2> <3>
    example
Yule-Walker AR method <1> <2> <3> <4>
    example <1> <2>
    Welch's method, comparison to
Yule-Walker equations

zero frequency component, centering
zero-order hold. See averaging filters
zero-phase filtering
zero-pole analysis
zero-pole plots <1> <2>
zero-pole-gain forms <1> <2> <3>
    example
    second-order section forms, conversions from
    second-order section forms, conversions to
    SPTool
    state-space forms, conversions from
    state-space forms, conversions to
zeros and poles
    multiplicity of
    transfer functions
zooming
zp2sos <1> <2>
zp2ss <1> <2>
zp2tf <1> <2>
zplane <1> <2>
z-transforms <1> <2>
    chirp z-transforms (CZT) <1> <2>
    discrete Fourier transforms <1> <2>