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−<!-- $Id: constructor_examples_specwin_content.html,v 1.3 2009/09/08 14:51:06 nicola Exp $ -->
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−
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−<!-- -------------------------------------------------- -->
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−<!-- --------------- BEGIN CONTENT FILE --------------- -->
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−<!-- -------------------------------------------------- -->
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−
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−<table border="0" summary="Simple list" class="simplelist_nottable_last">
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−  <tr>
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−    <td>
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−      <a href="constructor_examples_specwin.html#empty">Construct empty SPECWIN object</a>
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−    </td>
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−  </tr>
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−  <tr>
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−    <td>
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−      <a href="constructor_examples_specwin.html#xml_file">Construct a SPECWIN object by loading the object from a file</a>
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−    </td>
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−  </tr>
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−  <tr>
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−    <td>
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−      <a href="constructor_examples_specwin.html#particular">Construct a SPECWIN of a particular window type an length</a>
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−    </td>
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−  </tr>
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−  <tr>
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−    <td>
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−      <a href="constructor_examples_specwin.html#kaiser">Construct a SPECWIN Kaiser window with the prescribed psll</a>
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−    </td>
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−  </tr>
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−  <tr>
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−    <td>
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−      <a href="constructor_examples_specwin.html#plist">Construct a SPECWIN object from a parameter list (PLIST) object</a>
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−    </td>
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−  </tr>
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−</table>
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−
+
−<!-- --------------- NEXT EXAMPLE --------------- -->
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−
+
−<hr>
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−<h2 class="title"><a href="gui_specwin.html">For help in designing a SPECWIN object, see also the Spectral Window GUI documentation</a></h2>
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−<hr />
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−<h2 class="title"></h2>
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−<h2 class="title"><a name="empty"></a>Construct empty SPECWIN object</h2>
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−<p>The following example creates an empty specwin object</p>
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−<div class="fragment"><pre class="programlisting">
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−w = specwin()
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−-------- None ------------
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−
+
−   alpha: -1
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−    psll: -1
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−     rov: -1
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−   nenbw: -1
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−    w3db: -1
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−flatness: -1
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−      ws: -1
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−     ws2: -1
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−     win: 1
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−
+
−--------------------------
+
−</pre></div>
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−
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−<!-- --------------- NEXT EXAMPLE --------------- -->
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−
+
−<hr>
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−<h2 class="title"><a name="xml_file"></a>Construct a SPECWIN object by loading the object from a file</h2>
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−<p>The following example creates a new specwin object by loading the specwin object from disk.</p>
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−<div class="fragment"><pre class="programlisting">
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−p = specwin(<span class="string">'specwin.mat'</span>)
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−p = specwin(<span class="string">'specwin.xml'</span>)
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−</pre></div>
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−
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−<!-- --------------- NEXT EXAMPLE --------------- -->
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−
+
−<hr>
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−<h2 class="title"><a name="particular"></a>Construct a SPECWIN of a particular window type an length</h2>
+
−  <p>To create a spectral window object, you call the <tt>specwin</tt> class constructor. The following
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−	code fragment creates a 100-point Hanning window:
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−  </p>
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−  <div class="fragment"><pre>
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−	>> w = specwin(<span class="string">'Hanning'</span>, 100)
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−	-------- Hanning ------------
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−
+
−	   alpha: 0
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−	    psll: 31.5
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−	     rov: 50
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−	   nenbw: 1.5
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−	    w3db: 1.4382
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−	flatness: -1.4236
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−	      ws: 50
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−	     ws2: 37.5
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−	     win: 100
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−
+
−	-----------------------------
+
−	</pre></div>
+
−  <p><a href="specwin_description.html">List of available window functions</a></p>
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−
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−<!-- --------------- NEXT EXAMPLE --------------- -->
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−
+
−<hr>
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−<h2 class="title"><a name="kaiser"></a>Construct a SPECWIN Kaiser window with the prescribed psll</h2>
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−  <p>In the special case of creating a Kaiser window, the additional input parameter, PSLL, must be supplied. For example, the following code creates a 100-point Kaiser window with -150dB peak side-lobe level:</p>
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−  <div class="fragment"><pre>
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−	>> w = specwin(<span class="string">'Kaiser'</span>, 100, 150)
+
−	-------- Kaiser ------------
+
−
+
−	   alpha: 6.18029
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−	    psll: 150
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−	     rov: 73.3738
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−	   nenbw: 2.52989
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−	    w3db: 2.38506
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−	flatness: -0.52279
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−	      ws: 28.2558
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−	     ws2: 20.1819
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−	     win: 100
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−
+
−	----------------------------
+
−	</pre></div>
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−
+
−<!-- --------------- NEXT EXAMPLE --------------- -->
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−
+
−<hr>
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−<h2 class="title"><a name="plist"></a>Construct a SPECWIN object from a parameter list (PLIST) object</h2>
+
−<p>Construct a SPECWIN from its definion.
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−  <table border="0" summary="Simple list" class="simplelist_nottable_last" width="50%">
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−    <tr valign="top">
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−      <td width="25%">
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−        <p>'Name'</p>
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−      </td>
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−      <td width="75%">
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−        <p>Spectral window name [default: 'Kaiser']</p>
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−      </td>
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−    </tr>
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−    <tr valign="top">
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−      <td width="25%">
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−        <p>'N'</p>
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−      </td>
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−      <td width="75%">
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−        <p>Spectral window length [default: 10]</p>
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−      </td>
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−    </tr>
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−    <tr valign="top">
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−      <td width="25%">
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−        <p>'PSLL'</p>
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−      </td>
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−      <td width="75%">
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−        <p>Peak sidelobe length (only for Kaiser type)<br />[default: 150]</p>
+
−      </td>
+
−    </tr>
+
−  </table>
+
−</p>
+
−<div class="fragment"><pre class="programlisting">
+
−pl = plist(<span class="string">'Name'</span>, <span class="string">'Kaiser'</span>, <span class="string">'N'</span>, 1000, <span class="string">'PSLL'</span>, 75);
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−
+
−w = specwin(pl)
+
−-------- Kaiser ------------
+
−
+
−   alpha: 3.21394
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−    psll: 75
+
−     rov: 63.4095
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−   nenbw: 1.85055
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−    w3db: 1.75392
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−flatness: -0.963765
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−      ws: 389.305
+
−     ws2: 280.892
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−     win: 1000
+
−
+
−----------------------------
+
−</pre></div>
+
−<div class="fragment"><pre class="programlisting">
+
−pl = plist(<span class="string">'Name'</span>, <span class="string">'Hanning'</span>, <span class="string">'N'</span>, 1000);
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−
+
−w =specwin(pl)
+
−-------- Hanning ------------
+
−
+
−   alpha: 0
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−    psll: 31.5
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−     rov: 50
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−   nenbw: 1.5
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−    w3db: 1.4382
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−flatness: -1.4236
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−      ws: 500
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−     ws2: 375
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−     win: 1000
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−
+
−-----------------------------
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−</pre></div>
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