- Scilab help
- Signal Processing
- How to
- Signal
- analpf
- bilt
- buttmag
- casc
- cepstrum
- cheb1mag
- cheb2mag
- chepol
- convol
- corr
- cspect
- czt
- detrend
- dft
- ell1mag
- eqfir
- eqiir
- faurre
- ffilt
- fft
- fft2
- fftshift
- filt_sinc
- filter
- find_freq
- findm
- frfit
- frmag
- fsfirlin
- group
- hank
- hilb
- hilbert
- iir
- iirgroup
- iirlp
- intdec
- jmat
- kalm
- lattn
- lattp
- lev
- levin
- lindquist
- mese
- mfft
- mrfit
- %asn
- %k
- %sn
- phc
- pspect
- remez
- remezb
- rpem
- sincd
- srfaur
- srkf
- sskf
- syredi
- system
- trans
- wfir
- wiener
- wigner
- window
- yulewalk
- zpbutt
- zpch1
- zpch2
- zpell
Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
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Signal
Signal manual description
Filters
- analpf
analog low-pass filter
- buttmag
squared magnitude response of a Butterworth filter
- casc
creates cascade realization of filter
- cheb1mag
square magnitude response of a type 1 Chebyshev filter
- cheb2mag
square magnitude response of a type 1 Chebyshev filter
- chepol
recursive implementation of Chebychev polynomial
- convol
convolution of 2 discrete series
- ell1 mag
squared magnitude of an elliptic filter
- eqfir
minimax multi-band, linear phase, FIR filter
- eqiir
design of iir filter
- faurre
optimal lqg filter.
- lindquis
optimal lqg filter lindquist algorithm
- ffilt
FIR low-pass,high-pass, band-pass, or stop-band filter
- filter
compute the filter model
- find_freq
parameter compatibility for elliptic filter design
- findm
for elliptic filter design
- frmag
magnitude of the frequency responses of FIR and IIR filters.
- fsfirlin
design of FIR, linear phase (frequency sampling technique)
- fwiir
optimum design of IIR filters in cascade realization,
- iir
designs an iir digital filter using analog filter designs.
- iirgroup
group delay of iir filter
- iirlp
Lp IIR filters optimization
- group
calculate the group delay of a digital filter
- remezb
minimax approximation of a frequency domain magnitude response.
- kalm
Kalman update and error variance
- lev
resolve the Yule-Walker equations :
- levin
solve recursively Toeplitz system (normal equations)
- srfaur
square-root algorithm for the algebraic Riccati equation.
- srkf
square-root Kalman filter algorithm
- sskf
steady-state Kalman filter
- system
generates the next observation given the old state
- trans
transformation of standardized low-pass filter into low-pass, high-pass, band-pass, stop-band.
- wfir
linear-phase windowed FIR low-pass, band-pass, high-pass, stop-band
- wiener
Wiener estimate (forward-backward Kalman filter formulation)
- wigner
time-frequency wigner spectrum of a signal.
- window
calculate symmetric window
- zpbutt
Butterworth analog filter
- zpch1
poles of a type 1 Chebyshev analog filter
- zpch2
poles and zeros of a type 2 Chebyshev analog filter
- zpell
poles and zeros of prototype lowpass elliptic filter
Spectral estimation
- corr
correlation coefficients
- cspect
spectral estimation using the modified periodogram method.
- czt
chirp z-transform algorithm
- intdec
change the sampling rate of a 1D or 2D signal
- mese
calculate the maximum entropy spectral estimate
- pspect
auto and cross-spectral estimate
- wigner
Wigner-Ville time/frequency spectral estimation
Transforms
- dft
discrete Fourier transform
- fft
fast flourier transform
- hilb
Hilbert transform centred around the origin.
- hank
hankel matrix of the covariance sequence of a vector process
- mfft
fft for a multi-dimensional signal
Identification
- lattn,lattp
recursive solution of normal equations
- phc
State space realisation by the principal hankel component approximation method,
- rpem
identification by the recursive prediction error method
Miscellaneous
- sinc
calculate the function sin(2*pi*fl*t)/(pi*t)
- sincd
calculates the function Sin(N*x)/Sin(x)
- %k
Jacobi's complete elliptic integral
- %asn
.TP the elliptic integral :
- %sn
Jacobi 's elliptic function with parameter m
- bilt
bilinear transform or biquadratic transform.
- jmat
permutes block rows or block columns of a matrix
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