cheb2ord

(/tools/hpmatlab/toolbox/signal/cheb2ord.m)

Function Synopsis

[order,wn] = cheb2ord(wp,ws,rp,rs,opt)

Help text

CHEB2ORD Chebyshev type II filter order selection.
	[N, Wn] = CHEB2ORD(Wp, Ws, Rp, Rs) returns the order N of the
	lowest order digital Chebyshev type I 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.  CHEB2ORD also returns Wn, the Chebyshev 
	natural frequency to use with CHEBY2 to achieve the 
	specifications.
	[N, Wn] = CHEB1ORD(Wp, Ws, Rp, Rs, 's') does the computation
	for an analog filter.
	See also CHEBY2, BUTTORD, ELLIPORD, and CHEB1ORD.

Cross-Reference Information

abs            /tools/hpmatlab/toolbox/matlab/elfun/abs.m
acosh          /tools/hpmatlab/toolbox/matlab/elfun/acosh.m
atan           /tools/hpmatlab/toolbox/matlab/elfun/atan.m
ceil           /tools/hpmatlab/toolbox/matlab/elfun/ceil.m
cosh           /tools/hpmatlab/toolbox/matlab/elfun/cosh.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