1 $SPCTOOLS= in spline directory of Dennis Brown's <a href="ftp://svr-ftp.eng.cam.ac.uk/pub/comp.speech/tools/spctools">SPCtools</a>
2 $TFTB= try <a href="http://www-isis.enst.fr/Applications/tftb/iutsn.univ-nantes.fr/auger/tftb.html">Time-Frequency Tool box</a>
4 signal >> Signal processing
15 vco modulate demod= $TFTB
94 Power spectrum analysis
104 pcov pmcov pmtm pmusic= $SPCTOOLS
127 System identification
129 arcov= use <code>ar_covar</code> $SPCTOOLS
130 armcov= use <code>ar_mdcov</code> $SPCTOOLS
131 prony= use <code>ar_prony</code> $SPCTOOLS
146 buttap= use <f>butter</f><code>(n,1,'s')</code>
147 cheb1ap= use <f>cheby1</f><code>(n,Rp,1,'s')</code>
148 cheb2ap= use <f>cheby2</f><code>(n,Rs,1,'s')</code>
149 ellipap= use <f>ellip</f><code>(n,Rp,Rs,1,'s')</code>
150 lp2bp= use <f>sftrans</f>
151 lp2bs= use <f>sftrans</f>
152 lp2hp= use <f>sftrans</f>
153 lp2lp= use <f>sftrans</f>
154 yulewalk=use <f>yulewalker</f>