# Signal Processing

## Documentation for package ‘gsignal’ version 0.3-7

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

A B C D E F G H I K L M N P Q R S T U W X Z

## -- A --

arburg | Autoregressive model coefficients - Burg's method
Arma | Autoregressive moving average (ARMA) model
aryule | Autoregressive model coefficients - Yule-Walker method
ar_psd | Power spectrum of AR model
as.Arma | Autoregressive moving average (ARMA) model
as.Arma.Arma | Autoregressive moving average (ARMA) model
as.Arma.Ma | Autoregressive moving average (ARMA) model
as.Arma.Sos | Autoregressive moving average (ARMA) model
as.Arma.Zpg | Autoregressive moving average (ARMA) model
as.Sos | Second-order sections
as.Sos.Arma | Second-order sections
as.Sos.Ma | Second-order sections
as.Sos.Sos | Second-order sections
as.Sos.Zpg | Second-order sections
as.Zpg | Zero pole gain model
as.Zpg.Arma | Zero pole gain model
as.Zpg.Ma | Zero pole gain model
as.Zpg.Sos | Zero pole gain model
as.Zpg.Zpg | Zero pole gain model

## -- B --

barthannwin | Modified Bartlett-Hann window
bartlett | Bartlett window
besselap | Bessel analog low-pass filter prototype
besself | Bessel analog filter design
bilinear | Bilinear transformation
bilinear.Arma | Bilinear transformation
bilinear.default | Bilinear transformation
bilinear.Zpg | Bilinear transformation
bitrevorder | Permute input to bit-reversed order
blackman | Blackman window
blackmanharris | Blackman-Harris window
blackmannuttall | Blackman-Nuttall window
bohmanwin | Bohman window
boxcar | Rectangular window
buffer | Buffer signal vector into matrix of data segments
buttap | Butterworth filter prototype
butter | Butterworth filter design
butter.default | Butterworth filter design
butter.FilterSpecs | Butterworth filter design
buttord | Butterworth filter order and cutoff frequency

## -- C --

cceps | Complex cepstral analysis
cconv | Circular convolution
cheb | Chebyshev polynomials
cheb1ap | Chebyshev Type I filter prototype
cheb1ord | Chebyshev Type I filter order
cheb2ap | Chebyshev Type II filter prototype
cheb2ord | Chebyshev Type II filter order
chebwin | Chebyshev window
cheby1 | Chebyshev Type I filter design
cheby1.default | Chebyshev Type I filter design
cheby1.FilterSpecs | Chebyshev Type I filter design
cheby2 | Chebyshev Type II filter design
cheby2.default | Chebyshev Type II filter design
cheby2.FilterSpecs | Chebyshev Type II filter design
chirp | Chirp signal
cl2bp | Constrained L2 bandpass FIR filter design
clustersegment | Cluster Segments
cmorwavf | Complex Morlet Wavelet
cohere | Magnitude-squared coherence
conv | Convolution and polynomial multiplication
conv2 | 2-D convolution
convmtx | Convolution matrix
cplxpair | Complex conjugate pairs
cplxreal | Sort complex conjugate pairs and real
cpsd | Cross power spectral density
csd | Cross power spectral density
czt | Chirp Z-transform

## -- D --

db2pow | Power - decibel conversion
dct | Discrete Cosine Transform
dct2 | 2-D Discrete Cosine Transform
dctmtx | Discrete Cosine Transform Matrix
decimate | Decrease sample rate
detrend | Remove Polynomial Trend
dftmtx | Discrete Fourier Transform Matrix
digitrevorder | Permute input to digit-reversed order
diric | Dirichlet function
downsample | Decrease sample rate
dst | Discrete Sine Transform
dwt | 1-D Discrete Wavelet Transform

## -- E --

ellip | Elliptic filter design
ellip.default | Elliptic filter design
ellip.FilterSpecs | Elliptic filter design
ellipap | Low-pass analog elliptic filter
ellipord | Elliptic Filter Order

## -- F --

fftconv | FFT-based convolution
fftfilt | FFT-based FIR filtering
fftfilt.default | FFT-based FIR filtering
fftfilt.Ma | FFT-based FIR filtering
fftshift | Zero-frequency shift
fht | Fast Hartley Transform
filter | Filter a signal
filter.Arma | Filter a signal
filter.default | Filter a signal
filter.Ma | Filter a signal
filter.sgolayFilter | Savitzky-Golay filtering
filter.Sos | Filter a signal
filter.Zpg | Filter a signal
filter2 | 2-D digital filter
FilterSpecs | Filter specifications
filter_zi | Filter initial conditions
filter_zi.Arma | Filter initial conditions
filter_zi.default | Filter initial conditions
filter_zi.Ma | Filter initial conditions
filter_zi.Sos | Filter initial conditions
filter_zi.Zpg | Filter initial conditions
filtfilt | Zero-phase digital filtering
filtfilt.Arma | Zero-phase digital filtering
filtfilt.default | Zero-phase digital filtering
filtfilt.Ma | Zero-phase digital filtering
filtfilt.Sos | Zero-phase digital filtering
filtfilt.Zpg | Zero-phase digital filtering
filtic | Filter Initial Conditions
filtic.Arma | Filter Initial Conditions
filtic.default | Filter Initial Conditions
filtic.Ma | Filter Initial Conditions
filtic.Sos | Filter Initial Conditions
filtic.Zpg | Filter Initial Conditions
findpeaks | Find local extrema
fir1 | Window-based FIR filter design
fir2 | Frequency sampling-based FIR filter design
firls | Least-squares linear-phase FIR filter design
flattopwin | Flat top window
fracshift | Fractional shift
freqs | Frequency response of analog filters
freqs.Arma | Frequency response of analog filters
freqs.default | Frequency response of analog filters
freqs.Ma | Frequency response of analog filters
freqs.Sos | Frequency response of analog filters
freqs.Zpg | Frequency response of analog filters
freqs_plot | Frequency response of analog filters
freqz | Frequency response of digital filter
freqz.Arma | Frequency response of digital filter
freqz.default | Frequency response of digital filter
freqz.Ma | Frequency response of digital filter
freqz.Sos | Frequency response of digital filter
freqz.Zpg | Frequency response of digital filter
freqz_plot | Frequency response of digital filter
fwhm | Full width at half maximum
fwht | Fast Walsh-Hadamard Transform

## -- G --

gauspuls | Gaussian-modulated sinusoidal RF pulse
gaussian | Gaussian convolution window
gausswin | Gaussian window
gmonopuls | Gaussian monopulse
grpdelay | Group delay
grpdelay.Arma | Group delay
grpdelay.default | Group delay
grpdelay.Ma | Group delay
grpdelay.Sos | Group delay
grpdelay.Zpg | Group delay

## -- H --

hamming | Hamming window
hann | Hann window
hanning | Hann window
hilbert | Hilbert transform

## -- I --

idct | Inverse Discrete Cosine Transform
idct2 | Inverse 2-D Discrete Cosine Transform
idst | Inverse Discrete Sine Transform
ifft | Inverse Fast Fourier Transform
ifftshift | Inverse zero-frequency shift
ifht | Fast Hartley Transform
ifwht | Fast Walsh-Hadamard Transform
iirlp2mb | IIR lowpass filter to IIR multiband
iirlp2mb.Arma | IIR lowpass filter to IIR multiband
iirlp2mb.default | IIR lowpass filter to IIR multiband
iirlp2mb.Sos | IIR lowpass filter to IIR multiband
iirlp2mb.Zpg | IIR lowpass filter to IIR multiband
impinvar | Impulse invariance method for A/D filter conversion
impinvar.Arma | Impulse invariance method for A/D filter conversion
impinvar.default | Impulse invariance method for A/D filter conversion
impz | Impulse response of digital filter
impz.Arma | Impulse response of digital filter
impz.default | Impulse response of digital filter
impz.Ma | Impulse response of digital filter
impz.Sos | Impulse response of digital filter
impz.Zpg | Impulse response of digital filter
imvfft | Inverse Fast Fourier Transform
interp | Interpolation
invfreq | Inverse Frequency Response
invfreqs | Inverse Frequency Response
invfreqz | Inverse Frequency Response
invimpinvar | Inverse impulse invariance method
invimpinvar.Arma | Inverse impulse invariance method
invimpinvar.default | Inverse impulse invariance method

## -- K --

kaiser | Kaiser window
kaiserord | Kaiser filter order and cutoff frequency

## -- L --

levinson | Durbin-Levinson Recursion

## -- M --

Ma | Moving average (MA) model
marcumq | Marcum Q function
medfilt1 | 1-D median filtering
mexihat | Mexicat Hat
meyeraux | Meyer wavelet auxiliary function
morlet | Morlet Wavelet
movingrms | Moving Root Mean Square
mpoles | Multiplicity of poles
mscohere | Magnitude-squared coherence

## -- N --

ncauer | ncauer analog filter design
nuttallwin | Nuttall-defined minimum 4-term Blackman-Harris window

## -- P --

pad | Pad data
parzenwin | Parzen (de la Vallée Poussin) window
pburg | Autoregressive PSD estimate - Burg's method
peak2peak | Maximum-to-minimum difference
peak2rms | Peak-magnitude-to-RMS ratio
pei_tseng_notch | Pei-Tseng notch filter
plot.ar_psd | Power spectrum of AR model
plot.grpdelay | Group delay
plot.pwelch | Welch’s power spectral density estimate
plot.specgram | Spectrogram
poly | Polynomial with specified roots
polyreduce | Reduce polynomial
polystab | Stabilize polynomial
postpad | Pad data
pow2db | Power - decibel conversion
prepad | Pad data
primitive | Primitive
print.ar_psd | Power spectrum of AR model
print.freqs | Frequency response of analog filters
print.freqz | Frequency response of digital filter
print.grpdelay | Group delay
print.impz | Impulse response of digital filter
print.pwelch | Welch’s power spectral density estimate
print.specgram | Spectrogram
print.summary.freqs | Frequency response of analog filters
print.summary.freqz | Frequency response of digital filter
pulstran | Pulse train
pwelch | Welch’s power spectral density estimate
pyulear | Autoregressive PSD estimate - Yule-Walker method

## -- Q --

qp_kaiser | Kaiser FIR filter design

## -- R --

rceps | Real cepstrum
rectpuls | Rectangular pulse
rectwin | Rectangular window
remez | Parks-McClellan optimal FIR filter design
resample | Change sampling rate
residue | Partial fraction expansion
residued | delayed z-transform partial fraction expansion
residuez | Z-transform partial fraction expansion
rms | Root-mean-square
rresidue | Partial fraction expansion
rssq | Root-sum-of-squares

## -- S --

sampled2continuous | Signal reconstruction
sawtooth | Sawtooth or triangle wave
schtrig | Schmitt Trigger
sftrans | Transform filter band edges
sftrans.Arma | Transform filter band edges
sftrans.default | Transform filter band edges
sftrans.Zpg | Transform filter band edges
sgolay | Savitzky-Golay filter design
sgolayfilt | Savitzky-Golay filtering
shanwavf | Complex Shannon Wavelet
shiftdata | Shift data to operate on specified dimension
sigmoid_train | Sigmoid Train
signals | signals
sinetone | Sine tone
sinewave | Sine wave
Sos | Second-order sections
sos2tf | Sos to transfer function
sos2zp | Sos to zero-pole-gain
sosfilt | Second-order sections filtering
specgram | Spectrogram
square | Square wave
stft | Short-Term Fourier Transform
summary.freqs | Frequency response of analog filters
summary.freqz | Frequency response of digital filter

## -- T --

tf2sos | Transfer function to second-order sections form
tf2zp | Transfer function to zero-pole-gain form
tfe | Transfer Function Estimate
tfestimate | Transfer Function Estimate
triang | Triangular window
tripuls | Sampled aperiodic triangle
tukeywin | Tukey (tapered cosine) window

## -- U --

udecode | Uniform decoder
uencode | Uniform encoder
ultrwin | Ultraspherical window
unshiftdata | Inverse of shiftdata
unwrap | Unwrap phase angles
upfirdn | Upsample, apply FIR filter, downsample
upsample | Increase sample rate
upsamplefill | Upsample and Fill

## -- W --

wconv | 1-D or 2-D convolution
welchwin | Welch window
wfilters | 1-D Discrete Wavelet Transform
wkeep | Keep part of vector or matrix

## -- X --

xcorr | Cross-correlation
xcorr2 | 2-D cross-correlation
xcov | Cross-covariance

## -- Z --

zerocrossing | Zero Crossing
zp2sos | Zero-pole-gain to second-order section format
zp2tf | Zero-pole-gain to transfer function
Zpg | Zero pole gain model
zplane | Zero-pole plot
zplane.Arma | Zero-pole plot
zplane.default | Zero-pole plot
zplane.Ma | Zero-pole plot
zplane.Sos | Zero-pole plot
zplane.Zpg | Zero-pole plot