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<?xml version="1.0" encoding="UTF-8"?>
<!--
*
* This help file was generated from latc2tf.sci using help_from_sci().
*
-->
<refentry version="5.0-subset Scilab" xml:id="latc2tf" xml:lang="en"
xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns:ns3="http://www.w3.org/1999/xhtml"
xmlns:mml="http://www.w3.org/1998/Math/MathML"
xmlns:scilab="http://www.scilab.org"
xmlns:db="http://docbook.org/ns/docbook">
<refnamediv>
<refname>latc2tf</refname>
<refpurpose>Convert lattice filter parameters to transfer function coefficients</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Calling Sequence</title>
<synopsis>
</synopsis>
</refsynopsisdiv>
<refsection>
<title>Description</title>
<para>
[num,den] = latc2tf(k,v)
Finds the transfer function of the IIR filter from the lattice
coefficients k and ladder coefficients v.
[num,den] = latc2tf(k,'iiroption')
Finds the transfer function of the allpass or allpole (specified by
the iiroption flag) IIR filter.
num = latc2tf(k,'firoption')
Finds the transfer function of the FIR filter from the lattice
coefficients k. The firoption flag specifies the type of the FIR
filter (can be 'min, 'max', or 'FIR')
</para>
<para>
Parameters:
k - double - vector
Lattice coefficients
Lattice coefficients for FIR/IIR filter. Can be real or complex.
v - double - vector
Ladder coefficients
Ladder coefficients for IIR filters. Can be real or complex.
iiroption - string flag - 'allpole', or 'allpass'
Specification of the type if IIR filter
firoption - string flag - 'min', 'max', or 'FIR' (default)
Speficication of the type of FIR filter
</para>
<para>
</para>
</refsection>
<refsection>
<title>Examples</title>
<programlisting role="example"><![CDATA[
1) FIR filter
k1 = [1/2 1/2 1/4];
[num1,den1] = latc2tf(k1);
]]></programlisting>
</refsection>
<refsection>
<title>See also</title>
<simplelist type="inline">
<member><link linkend="latcfilt">| tf2latc</link></member>
<member><link linkend="References">References</link></member>
<member><link linkend="[1]">J.G. Proakis, D.G. Manolakis, Digital Signal Processing,</link></member>
<member><link linkend="3rd">ed., Prentice Hall, N.J., 1996, Chapter 7.</link></member>
<member><link linkend="[2]">S. K. Mitra, Digital Signal Processing, A Computer</link></member>
<member><link linkend="Based">Approach, McGraw-Hill, N.Y., 1998, Chapter 6.</link></member>
</simplelist>
</refsection>
<refsection>
<title>Authors</title>
<simplelist type="vert">
<member>Ayush Baid</member>
</simplelist>
</refsection>
</refentry>
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