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- Traitement du Signal
- How to
- fft
- Signal
- analpf
- bilt
- buttmag
- casc
- cepstrum
- cheb1mag
- cheb2mag
- chepol
- convol
- corr
- cspect
- czt
- detrend
- dft
- ell1mag
- eqfir
- eqiir
- faurre
- ffilt
- 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 2026.0.0. This page might be outdated.
However, this page did not exist in the previous stable version.
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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