cheb1ap

This function designs a lowpass analog Chebyshev type I filter.

Calling Sequence

[z, p, g] = cheb1ap (n, Rp)
[z, p] = cheb1ap (n, Rp)
p = cheb1ap (n, Rp)

Parameters

n:: Filter Order
Rp:: Peak-to-peak passband ripple
z:: Zeros
p:: Poles
g:: Gain

Description

This is an Octave function. It designs a lowpass analog Chebyshev type I filter of nth order and with a Peak-to-peak passband ripple of Rp.

Examples

[z, p, g] = cheb1ap (10, 20)
z = [](0x0)
p =

Columns 1 through 6:

-0.00157 - 0.98774i  -0.00456 - 0.89105i  -0.00709 - 0.70714i  -0.00894 - 0.45401i  -0.00991 - 0.15644i  -0.00991 + 0.15644i

Columns 7 through 10:

-0.00894 + 0.45401i  -0.00709 + 0.70714i  -0.00456 + 0.89105i  -0.00157 + 0.98774i

g =  1.9630e-04 - 6.3527e-22i

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