ellipap

Designs a lowpass analog elliptic filter.

Calling Sequence

[z, p, g] = ellipap (n, Rp, Rs)
[z, p] = ellipap (n, Rp, Rs)
z = ellipap (n, Rp, Rs)

Parameters

n:: Filter Order
Rp:: Peak-to-peak passband ripple
Rs:: Stopband attenuation

Description

This is an Octave function. It designs a lowpass analog elliptic filter of nth order, with a Peak-to-peak passband ripple of Rp and a stopband attenuation of Rs.

Examples

[z, p, g] = ellipap (5, 10, 10)
z =

0.0000 + 2.5546i   0.0000 + 1.6835i  -0.0000 - 2.5546i  -0.0000 - 1.6835i

p =

-0.05243 + 0.63524i  -0.01633 + 0.96289i  -0.05243 - 0.63524i  -0.01633 - 0.96289i  -0.07369 + 0.00000i

g =  0.0015012

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