<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<!DOCTYPE MAN SYSTEM "../../manrev.dtd">
<MAN>
  <LANGUAGE>eng</LANGUAGE>
  <TITLE>zpch1</TITLE>
  <TYPE>Scilab Function</TYPE>
  <DATE>April 1993</DATE>
  <SHORT_DESCRIPTION name="zpch1"> Chebyshev analog filter</SHORT_DESCRIPTION>
  <CALLING_SEQUENCE>
    <CALLING_SEQUENCE_ITEM>[poles,gain]=zpch1(n,epsilon,omegac)  </CALLING_SEQUENCE_ITEM>
  </CALLING_SEQUENCE>
  <PARAM>
    <PARAM_INDENT>
      <PARAM_ITEM>
        <PARAM_NAME>n</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: integer (filter order)</SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
      <PARAM_ITEM>
        <PARAM_NAME>epsilon</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: real : ripple in the pass band (<VERB>0&lt;epsilon&lt;1</VERB>)</SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
      <PARAM_ITEM>
        <PARAM_NAME>omegac</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: real : cut-off frequency in Hertz</SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
      <PARAM_ITEM>
        <PARAM_NAME>poles</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: resulting filter poles</SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
      <PARAM_ITEM>
        <PARAM_NAME>gain</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: resulting filter gain</SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
    </PARAM_INDENT>
  </PARAM>
  <DESCRIPTION>
    <P>
    Poles of a Type 1 Chebyshev analog filter. The transfer function is given by :</P>
    <VERBATIM>
<![CDATA[
 H(s)=gain/poly(poles,'s')
   ]]>
    </VERBATIM>
  </DESCRIPTION>
  <AUTHOR>F.D.  </AUTHOR>
</MAN>
