4072ebe6a15422981c763c6ef01ba3851a6fe327
[scilab.git] / scilab / modules / signal_processing / help / en_US / filters / lev.xml
1 <?xml version="1.0" encoding="UTF-8"?>
2 <refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" xmlns:scilab="http://www.scilab.org" xml:lang="en" xml:id="lev">
3     <refnamediv>
4         <refname>lev</refname>
5         <refpurpose>Yule-Walker equations (Levinson's algorithm)  </refpurpose>
6     </refnamediv>
7     <refsynopsisdiv>
8         <title>Calling Sequence</title>
9         <synopsis>[ar,sigma2,rc]=lev(r)</synopsis>
10     </refsynopsisdiv>
11     <refsection>
12         <title>Arguments</title>
13         <variablelist>
14             <varlistentry>
15                 <term>r</term>
16                 <listitem>
17                     <para>correlation coefficients</para>
18                 </listitem>
19             </varlistentry>
20             <varlistentry>
21                 <term>ar</term>
22                 <listitem>
23                     <para>auto-Regressive model parameters</para>
24                 </listitem>
25             </varlistentry>
26             <varlistentry>
27                 <term>sigma2</term>
28                 <listitem>
29                     <para>scale constant</para>
30                 </listitem>
31             </varlistentry>
32             <varlistentry>
33                 <term>rc</term>
34                 <listitem>
35                     <para>reflection coefficients</para>
36                 </listitem>
37             </varlistentry>
38         </variablelist>
39     </refsection>
40     <refsection>
41         <title>Description</title>
42         <para>
43             resolve the Yule-Walker equations
44         </para>
45         <para>
46             using Levinson's algorithm.
47         </para>
48     </refsection>
49 </refentry>