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<?xml version="1.0" encoding="UTF-8"?>
<!--
*
* This help file was generated from stmcb.sci using help_from_sci().
*
-->
<refentry version="5.0-subset Scilab" xml:id="stmcb" 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>stmcb</refname>
<refpurpose>Compute linear model using Steiglitz-McBride iteration</refpurpose>
<para> </para>
</refnamediv>
<refsynopsisdiv>
<title>Calling Sequence</title>
<synopsis>
[b,a] = stmcb(h,nb,na)
[b,a] = stmcb(y,x,nb,na)
[b,a] = stmcb(h,nb,na,niter)
[b,a] = stmcb(y,x,nb,na,niter)
[b,a] = stmcb(h,nb,na,niter,ai)
[b,a] = stmcb(y,x,nb,na,niter,ai)
</synopsis>
<para> </para>
</refsynopsisdiv>
<refsection>
<title>Parameters</title>
<variablelist>
<varlistentry><term>b,a </term>
<listitem><para> : coefficients of the system function,nb is number of zeros and na is number of poles</para></listitem></varlistentry>
<varlistentry><term>h</term>
<listitem><para> : impulse response of the system</para></listitem></varlistentry>
<varlistentry><term>x, y</term>
<listitem><para> : input and output of same length given to the system</para></listitem></varlistentry>
<varlistentry><term>nitren</term>
<listitem><para> : number of iterations</para></listitem></varlistentry>
<varlistentry><term>ai</term>
<listitem><para> : initial estimate of the denominator coefficients</para></listitem></varlistentry>
<para> </para>
<para>Accepts only real i/ps, complex i/ps are not accepted due to limitations of the 'filter' function in Scilab</para>
</variablelist>
<para> </para>
</refsection>
<refsection>
<title>Examples</title>
<programlisting role="example"><![CDATA[
h = fscanfMat("macros/stmcb_h_data.txt"); //required impulse response samples
plot(h); //plotting required impulse response
title "Required impulse respose (h) plot "
xlabel "samples (n)"
ylabel "magnitude {h(n)} "
nb = 4 ; // four zeros
na = 4 ; //four poles
stmcb(h,nb,na)
]]></programlisting>
<scilab:image>
h = [0.0003
0.0033
0.0149
0.0432
0.0911
0.1493
0.1985
0.2190
0.2007
0.1479
0.0764
0.0070
-0.0429
-0.0649
-0.0601
-0.0375
-0.0092
0.0142
0.0265
0.0267
0.0180
0.0057
-0.0052
-0.0115
-0.0123
-0.0088
-0.0033
0.0018
0.0050
0.0057
0.0043
0.0018
-0.0006
-0.0021
-0.0026
-0.0021
-0.0010
0.0001
0.0009
0.0012
0.0010
0.0005
0.0000
-0.0004
-0.0005
-0.0005
-0.0003
-0.0000
0.0002
0.0002
0.0002
0.0001
0.0000
-0.0001
-0.0001
-0.0001
-0.0001
-0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
-0.0000 ]
plot(h); //plotting required impulse response
title "Required impulse respose (h) plot "
xlabel "samples (n)"
ylabel "magnitude {h(n)} "
</scilab:image>
</refsection>
</refentry>
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