## Name

zpch2 — Chebyshev analog filter

## Calling Sequence

[zeros,poles,gain]=zpch2(n,A,omegar)

## Parameters

- n
integer : filter order

- A
real : attenuation in stop band (`A>1`

)

- omegar
real : cut-off frequency in Hertz

- zeros
resulting filter zeros

- poles
resulting filter poles

- gain
Resulting filter gain

## Description

Poles and zeros of a type 2 Chebyshev analog filter
gain is the gain of the filter

H(s)=gain*poly(zeros,'s')/poly(poles,'s')