ellipord

(/tools/hpmatlab/toolbox/signal/ellipord.m)

Function Synopsis

[order,wn] = ellipord(wp,ws,rp,rs,opt)

Help text

ELLIPORD Elliptic filter order selection.
	[N, Wn] = ELLIPORD(Wp, Ws, Rp, Rs) returns the order N of the
	lowest order digital elliptic filter that loses no more than
	Rp dB in the passband and has at least Rs dB of attenuation
	in the stopband.  The passband runs from 0 to Wp and the 
	stopband extends from Ws to 1.0, the Nyquist frequency.  
	ELLIPORD also returns Wn, the elliptic natural frequency to
	use with ELLIP to achieve the specifications.
	[N, Wn] = ELLIPORD(Wp, Ws, Rp, Rs, 's') does the computation
	for an analog filter.
	See also ELLIP, BUTTORD, CHEB1ORD, and CHEB2ORD.

Cross-Reference Information

abs            /tools/hpmatlab/toolbox/matlab/elfun/abs.m
ceil           /tools/hpmatlab/toolbox/matlab/elfun/ceil.m
else           /tools/hpmatlab/toolbox/matlab/lang/else.m
elseif         /tools/hpmatlab/toolbox/matlab/lang/elseif.m
end            /tools/hpmatlab/toolbox/matlab/lang/end.m
error          /tools/hpmatlab/toolbox/matlab/lang/error.m
for            /tools/hpmatlab/toolbox/matlab/lang/for.m
if             /tools/hpmatlab/toolbox/matlab/lang/if.m
length         /tools/hpmatlab/toolbox/matlab/general/length.m
min            /tools/hpmatlab/toolbox/matlab/datafun/min.m
nargin         /tools/hpmatlab/toolbox/matlab/elmat/nargin.m
pi             /tools/hpmatlab/toolbox/matlab/elmat/pi.m
sqrt           /tools/hpmatlab/toolbox/matlab/elfun/sqrt.m
tan            /tools/hpmatlab/toolbox/matlab/elfun/tan.m

filtdemo       /tools/hpmatlab/toolbox/signal/filtdemo.m