%asn - elliptic integral  
%k - jacobi's complete elliptic integral  
%sn - jacobi 's elliptic function  
Signal - signal manual description  
analpf - create analog low-pass filter  
buttmag - response of butterworth filter  
casc - cascade realization of filter from coefficients  
cepstrum - cepstrum calculation  
cheb1mag - response of chebyshev type 1 filter  
cheb2mag - response of type 2 chebyshev filter  
chepol - chebychev polynomial  
convol - convolution  
corr - correlation, covariance  
cspect - spectral estimation (periodogram method)  
czt - chirp z-transform algorithm  
dft - discrete fourier transform  
ell1mag - magnitude of elliptic filter  
eqfir - minimax approximation of fir filter  
eqiir - design of iir filters  
faurre - filter  
ffilt - coefficients of fir low-pass  
fft - fast fourier transform.  
filter - modelling filter  
find_freq - parameter compatibility for elliptic filter design  
findm - for elliptic filter design  
frfit - frequency response fit  
frmag - magnitude of fir and iir filters  
fsfirlin - design of fir, linear phase filters, frequency sampling technique  
group - group delay for digital filter  
hank - covariance to hankel matrix  
hilb - hilbert transform  
iir - iir digital filter  
iirgroup - group delay lp iir filter optimization  
iirlp - lp iir filter optimization  
intdec - changes sampling rate of a signal  
jmat - row or column block permutation  
kalm - kalman update  
lattn - recursive solution of normal equations  
lattp - lattp  
lev - yule-walker equations (levinson's algorithm)  
levin - toeplitz system solver by levinson algorithm (multidimensional)  
lgfft - utility for fft  
lindquist - lindquist's algorithm  
mese - maximum entropy spectral estimation  
mfft - multi-dimensional fft  
mrfit - frequency response fit  
phc - markovian representation  
pspect - cross-spectral estimate between 2 series  
remez - remez's algorithm  
remezb - minimax approximation of magnitude response  
rpem - rpem estimation  
sinc - samples of sinc function  
sincd - sinc function  
srfaur - square-root algorithm  
srkf - square root kalman filter  
sskf - steady-state kalman filter  
system - observation update  
trans - low-pass to other filter transform  
wfir - linear-phase fir filters  
wiener - wiener estimate  
wigner - 'time-frequency' wigner spectrum  
window - symmetric window  
yulewalk - least-square filter design  
zpbutt - butterworth analog filter  
zpch1 - chebyshev analog filter  
zpch2 - chebyshev analog filter  
zpell - lowpass elliptic filter  
