$SPCTOOLS= in spline directory of Dennis Brown's SPCtools $TFTB= try Time-Frequency Tool box signal >> Signal processing Signals diric gauspuls gmonopuls pulstran tripuls rectpuls sawtooth square chirp vco modulate demod= $TFTB specgram buffer mexihat meyeraux morlet shanwavf cmorwavf sigmoid_train Filtering filtfilt filtic sgolayfilt sosfilt medfilt1 Filter analysis freqs freqs_plot grpdelay impz zplane fwhm Filter conversion convmtx residuez residued sos2tf sos2zp ss2tf ss2zp tf2sos tf2ss tf2zp zp2sos zp2ss zp2tf polystab IIR Filter design besself butter cheby1 cheby2 ellip ncauer buttord cheb1ord cheb2ord ellipord besselap sftrans bilinear impinvar iirlp2mb FIR filter design fir1 fir2 firls kaiserord remez sgolay qp_kaiser cl2bp Transforms czt dctmtx dct2 idct2 dct idct dst idst dftmtx hilbert rceps cceps cplxreal bitrevorder dwt fht ifht Power spectrum analysis pwelch tfe tfestimate cohere csd ar_psd cpsd mscohere pburg pcov pmcov pmtm pmusic= $SPCTOOLS pyulear xcorr xcorr2 xcov __power Window functions window barthannwin blackmanharris blackmannuttall bohmanwin boxcar chebwin flattopwin hann kaiser nuttallwin triang gaussian gausswin tukeywin rectwin welchwin parzenwin System identification arburg arcov= use ar_covar $SPCTOOLS armcov= use ar_mdcov $SPCTOOLS prony= use ar_prony $SPCTOOLS aryule invfreq invfreqs invfreqz levinson Sample rate change decimate interp downsample upsample resample upfirdn data2fun Compatibility buttap= use butter(n,1,'s') cheb1ap= use cheby1(n,Rp,1,'s') cheb2ap= use cheby2(n,Rs,1,'s') ellipap= use ellip(n,Rp,Rs,1,'s') lp2bp= use sftrans lp2bs= use sftrans lp2hp= use sftrans lp2lp= use sftrans yulewalk=use yulewalker Utility buffer fracshift marcumq wkeep wrev zerocrossing sampled2continuous