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| author | shamikam | 2017-11-07 15:59:48 +0530 |
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| committer | shamikam | 2017-11-07 15:59:48 +0530 |
| commit | c0c0582462720ed597b00e116506570577614e89 (patch) | |
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diff --git a/help/en_US/scilab_en_US_help/poly2ac.html b/help/en_US/scilab_en_US_help/poly2ac.html new file mode 100644 index 0000000..0c8b707 --- /dev/null +++ b/help/en_US/scilab_en_US_help/poly2ac.html @@ -0,0 +1,92 @@ +<html><head> + <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> + <title>poly2ac</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"); + </style> + </head> + <body> + <div class="manualnavbar"> + <table width="100%"><tr> + <td width="30%"> + <span class="previous"><a href="pmusic.html"><< pmusic</a></span> + + </td> + <td width="40%" class="center"> + <span class="top"><a href="section_be19baaac84b122b8ad501d34462f5bf.html">FOSSEE Signal Processing Toolbox</a></span> + + </td> + <td width="30%" class="next"> + <span class="next"><a href="poly2lsf.html">poly2lsf >></a></span> + + </td> + </tr></table> + <hr /> + </div> + + + + <span class="path"><a href="index.html">FOSSEE Signal Processing Toolbox</a> >> <a href="section_be19baaac84b122b8ad501d34462f5bf.html">FOSSEE Signal Processing Toolbox</a> > poly2ac</span> + + <br /><br /> + <div class="refnamediv"><h1 class="refname">poly2ac</h1> + <p class="refpurpose">Convert prediction polynomial to autocorrelation sequence.</p></div> + + +<div class="refsynopsisdiv"><h3 class="title">Calling Sequence</h3> + <div class="synopsis"><pre><span class="default">R</span><span class="default"> = </span><span class="functionid">poly2ac</span><span class="default">(</span><span class="default">a</span><span class="default">,</span><span class="default">efinal</span><span class="default">)</span></pre></div></div> + +<div class="refsection"><h3 class="title">Parameters</h3> + <dl><dt><span class="term">a:</span> + <dd><p class="para">input prediction polynomial with 1st element 1 (if not, poly2ac normalizes it to 1 before proceeding).</p></dd></dt> + <dt><span class="term">efinal:</span> + <dd><p class="para">input prediction error</p></dd></dt> + <dt><span class="term">r:</span> + <dd><p class="para">output autocorrelation sequence</p></dd></dt></dl></div> + +<div class="refsection"><h3 class="title">Description</h3> + <p class="para">This function obtains the underlying autocorrelation sequence that would best fit a linear prediction filter described by the +denominator polynomial and the numerator scaling. The filter is H(z) = efinal/(a(1) + a(2) x z a(3) x z^2 ... a(n) x z^n-1)</p> + <p class="para"></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="scilabid">a</span> <span class="scilaboperator">=</span> <span class="scilabopenclose">[</span><span class="scilabnumber">1.0000</span> <span class="scilabnumber">0.4288</span> <span class="scilabnumber">0.76</span> <span class="scilabnumber">0.0404</span> <span class="scilaboperator">-</span><span class="scilabnumber">0.02</span><span class="scilabopenclose">]</span><span class="scilabdefault">;</span> +<span class="scilabid">efinal</span> <span class="scilaboperator">=</span> <span class="scilabnumber">0.2</span><span class="scilabdefault">;</span> <span class="scilabcomment">// Step prediction error</span> +<span class="scilabid">r</span> <span class="scilaboperator">=</span> <span class="scilabid">poly2ac</span><span class="scilabopenclose">(</span><span class="scilabid">a</span><span class="scilabdefault">,</span><span class="scilabid">efinal</span><span class="scilabopenclose">)</span> <span class="scilabcomment">// Autocorrelation sequence</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> + +<div class="refsection"><h3 class="title">See also</h3> + <ul class="itemizedlist"><li class="member"><a href="ac2poly.html" class="link">ac2poly</a></li> + <li class="member"><a href="poly2rc.html" class="link">poly2rc</a></li> + <li class="member"><a href="rc2poly.html" class="link">rc2poly</a></li> + <li class="member"><a href="rc2ac.html" class="link">rc2ac</a></li> + <li class="member"><a href="ac2rc.html" class="link">ac2rc</a></li> + <li class="member"><a href="scilab://Author:" class="link">Parthe Pandit</a></li></ul></div> + +<div class="refsection"><h3 class="title">Bibliography</h3> + <p class="para">S. Kay, Modern Spectral Estimation, Prentice Hall, N.J., 1987, Chapter 6.</p></div> + <br /> + + <div class="manualnavbar"> + <table width="100%"> + <tr><td colspan="3" class="next"><a href="http://bugzilla.scilab.org/enter_bug.cgi?product=Scilab%20software&component=Documentation%20pages" class="ulink">Report an issue</a></td></tr> +<tr> + <td width="30%"> + <span class="previous"><a href="pmusic.html"><< pmusic</a></span> + + </td> + <td width="40%" class="center"> + <span class="top"><a href="section_be19baaac84b122b8ad501d34462f5bf.html">FOSSEE Signal Processing Toolbox</a></span> + + </td> + <td width="30%" class="next"> + <span class="next"><a href="poly2lsf.html">poly2lsf >></a></span> + + </td> + </tr></table> + <hr /> + </div> + </body> +</html> |