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<span class="path"><a href="index.html">FOSSEE Signal Processing Toolbox</a> >> <a href="section_be19baaac84b122b8ad501d34462f5bf.html">FOSSEE Signal Processing Toolbox</a> > hann</span>
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<div class="refnamediv"><h1 class="refname">hann</h1>
<p class="refpurpose">This function returns the filter coefficients of a Hanning window.</p></div>
<div class="refsynopsisdiv"><h3 class="title">Calling Sequence</h3>
<div class="synopsis"><pre><span class="default">w</span><span class="default"> = </span><span class="functionid">hann</span><span class="default">(</span><span class="default">m</span><span class="default">)</span>
<span class="default">w</span><span class="default"> = </span><span class="functionid">hann</span><span class="default">(</span><span class="default">m</span><span class="default">, </span>"<span class="default">symmteric</span>"<span class="default">)</span>
<span class="default">w</span><span class="default"> = </span><span class="functionid">hann</span><span class="default">(</span><span class="default">m</span><span class="default">, </span>"<span class="default">periodic</span>"<span class="default">)</span></pre></div></div>
<div class="refsection"><h3 class="title">Parameters</h3>
<dl><dt><span class="term">m:</span>
<dd><p class="para">positive integer value</p></dd></dt>
<dt><span class="term">opt:</span>
<dd><p class="para">string value, takes in "periodic" or "symmetric"</p></dd></dt>
<dt><span class="term">w:</span>
<dd><p class="para">output variable, vector of real numbers</p></dd></dt></dl></div>
<div class="refsection"><h3 class="title">Description</h3>
<p class="para">This is an Octave function.
This function returns the filter coefficients of a Hanning window of length m supplied as input, to the output vector w.
The second parameter can take the values "periodic" or "symmetric", depending on which the corresponding form of window is returned. The default is symmetric.</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">hann</span><span class="scilabopenclose">(</span><span class="scilabnumber">6</span><span class="scilabdefault">,</span><span class="scilabstring">"</span><span class="scilabstring">symmetric</span><span class="scilabstring">"</span><span class="scilabopenclose">)</span>
<span class="scilabid">ans</span> <span class="scilaboperator">=</span>
<span class="scilabnumber">0.</span>
<span class="scilabnumber">0.3454915</span>
<span class="scilabnumber">0.9045085</span>
<span class="scilabnumber">0.9045085</span>
<span class="scilabnumber">0.3454915</span>
<span class="scilabnumber">0.</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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