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<html><head>
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<title>residuez</title>
<style type="text/css" media="all">
@import url("scilab_code.css");
@import url("xml_code.css");
@import url("c_code.css");
@import url("style.css");
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<span class="path"><a href="index.html">FOSSEE Signal Processing Toolbox</a> >> <a href="section_e54aa8aac34aa55341e8b4b782fe1a74.html">FOSSEE Signal Processing Toolbox</a> > residuez</span>
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<div class="refnamediv"><h1 class="refname">residuez</h1>
<p class="refpurpose"></p></div>
<div class="refsynopsisdiv"><h3 class="title">Calling Sequence</h3>
<div class="synopsis"><pre><span class="default">[</span><span class="default">r</span><span class="default">,</span><span class="default">p</span><span class="default">,</span><span class="default">f</span><span class="default">,</span><span class="default">m</span><span class="default">]=</span><span class="functionid">residuez</span><span class="default">(</span><span class="default">b</span><span class="default">,</span><span class="default">a</span><span class="default">)</span></pre></div></div>
<div class="refsection"><h3 class="title">Parameters</h3>
<dl><dt><span class="term">b:</span>
<dd><p class="para">Real or complex valued vector or matrix</p></dd></dt>
<dt><span class="term">a:</span>
<dd><p class="para">Real or complex valued vector or matrix</p></dd></dt></dl></div>
<div class="refsection"><h3 class="title">Description</h3>
<p class="para">This is an Octave function
It compute the PFE of filter H(z)= B(z)/A(z) where inputs b and a are vectors specifying the digital filter.</p></div>
<div class="refsection"><h3 class="title">Examples</h3>
<div class="programlisting"><table border="0" width="100%"><tr><td width="98%"><pre class="scilabcode"><span class="scilabnumber">1.</span> <span class="scilabopenclose">[</span><span class="scilabid">a</span><span class="scilabdefault">,</span><span class="scilabid">b</span><span class="scilabdefault">,</span><span class="scilabid">c</span><span class="scilabdefault">,</span><span class="scilabid">d</span><span class="scilabopenclose">]</span><span class="scilaboperator">=</span><span class="scilabid">residuez</span><span class="scilabopenclose">(</span><span class="scilabopenclose">[</span><span class="scilabid">i</span> <span class="scilabnumber">2</span><span class="scilabid">i</span> <span class="scilabnumber">3</span><span class="scilabid">i</span><span class="scilabdefault">;</span> <span class="scilaboperator">-</span><span class="scilabnumber">4</span> <span class="scilabnumber">1</span> <span class="scilabnumber">4</span><span class="scilabid">i</span><span class="scilabopenclose">]</span><span class="scilabdefault">,</span><span class="scilabopenclose">[</span><span class="scilabnumber">1</span> <span class="scilabnumber">2</span> <span class="scilabnumber">3</span><span class="scilabopenclose">]</span><span class="scilabopenclose">)</span>
<span class="scilabid">a</span> <span class="scilaboperator">=</span> <span class="scilabopenclose">[</span><span class="scilabnumber">0.6262</span> <span class="scilaboperator">-</span> <span class="scilabnumber">1.4412</span><span class="scilabid">i</span><span class="scilabdefault">;</span> <span class="scilaboperator">-</span><span class="scilabnumber">0.4039</span> <span class="scilaboperator">+</span> <span class="scilabnumber">1.4658</span><span class="scilabid">i</span><span class="scilabopenclose">]</span>
<span class="scilabid">b</span> <span class="scilaboperator">=</span> <span class="scilabopenclose">[</span><span class="scilaboperator">-</span><span class="scilabnumber">1.0000</span> <span class="scilaboperator">-</span> <span class="scilabnumber">1.4142</span><span class="scilabid">i</span><span class="scilabdefault">;</span> <span class="scilaboperator">-</span><span class="scilabnumber">1.0000</span> <span class="scilaboperator">+</span> <span class="scilabnumber">1.4142</span><span class="scilabid">i</span><span class="scilabopenclose">]</span>
<span class="scilabid">c</span> <span class="scilaboperator">=</span> <span class="scilabopenclose">[</span><span class="scilaboperator">-</span><span class="scilabnumber">0.22222</span> <span class="scilaboperator">-</span> <span class="scilabnumber">0.97531</span><span class="scilabid">i</span> <span class="scilabnumber">0.33333</span> <span class="scilaboperator">+</span> <span class="scilabnumber">0.51852</span><span class="scilabid">i</span> <span class="scilabnumber">0.00000</span> <span class="scilaboperator">-</span> <span class="scilabnumber">0.11111</span><span class="scilabid">i</span><span class="scilabdefault">;</span> <span class="scilabnumber">0.00000</span> <span class="scilaboperator">-</span> <span class="scilabnumber">1.33333</span><span class="scilabid">i</span><span class="scilabopenclose">]</span>
<span class="scilabid">d</span> <span class="scilaboperator">=</span> <span class="scilabnumber">1</span></pre></td><td valign="top"><a href="scilab://scilab.execexample/"><img src="ScilabExecute.png" border="0"/></a></td><td valign="top"><a href="scilab://scilab.editexample/"><img src="ScilabEdit.png" border="0"/></a></td><td></td></tr></table></div></div>
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