<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<!DOCTYPE MAN SYSTEM "../../manrev.dtd">
<MAN>
  <LANGUAGE>eng</LANGUAGE>
  <TITLE>freson</TITLE>
  <TYPE>Scilab Function</TYPE>
  <DATE>April 1993</DATE>
  <SHORT_DESCRIPTION name="freson"> peak frequencies</SHORT_DESCRIPTION>
  <CALLING_SEQUENCE>
    <CALLING_SEQUENCE_ITEM>fr=freson(h)  </CALLING_SEQUENCE_ITEM>
  </CALLING_SEQUENCE>
  <PARAM>
    <PARAM_INDENT>
      <PARAM_ITEM>
        <PARAM_NAME>h</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: <VERB>syslin</VERB> list</SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
      <PARAM_ITEM>
        <PARAM_NAME>fr</PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: vector of peak frequencies in Hz</SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
    </PARAM_INDENT>
  </PARAM>
  <DESCRIPTION>
    <P>
    returns the vector of peak frequencies in Hz for the SISO plant
    <VERB>h</VERB></P>
  </DESCRIPTION>
  <EXAMPLE>
<![CDATA[
h=syslin('c',-1+%s,(3+2*%s+%s^2)*(50+0.1*%s+%s^2))
fr=freson(h)
bode(h)
g=20*log(abs(repfreq(h,fr)))/log(10)
 ]]>
  </EXAMPLE>
  <SEE_ALSO>
    <SEE_ALSO_ITEM>
      <LINK>frep2tf</LINK>
    </SEE_ALSO_ITEM>
    <SEE_ALSO_ITEM>
      <LINK>zgrid</LINK>
    </SEE_ALSO_ITEM>
    <SEE_ALSO_ITEM>
      <LINK>h_norm</LINK>
    </SEE_ALSO_ITEM>
  </SEE_ALSO>
</MAN>
