Mercurial > hg > ltpda
view m-toolbox/html_help/help/ug/constructor_examples_specwin_content.html @ 42:f90d4f666cc7 database-connection-manager
Cleanup
author | Daniele Nicolodi <nicolodi@science.unitn.it> |
---|---|
date | Mon, 05 Dec 2011 18:04:34 +0100 |
parents | f0afece42f48 |
children |
line wrap: on
line source
<!-- $Id: constructor_examples_specwin_content.html,v 1.3 2009/09/08 14:51:06 nicola Exp $ --> <!-- -------------------------------------------------- --> <!-- --------------- BEGIN CONTENT FILE --------------- --> <!-- -------------------------------------------------- --> <table border="0" summary="Simple list" class="simplelist_nottable_last"> <tr> <td> <a href="constructor_examples_specwin.html#empty">Construct empty SPECWIN object</a> </td> </tr> <tr> <td> <a href="constructor_examples_specwin.html#xml_file">Construct a SPECWIN object by loading the object from a file</a> </td> </tr> <tr> <td> <a href="constructor_examples_specwin.html#particular">Construct a SPECWIN of a particular window type an length</a> </td> </tr> <tr> <td> <a href="constructor_examples_specwin.html#kaiser">Construct a SPECWIN Kaiser window with the prescribed psll</a> </td> </tr> <tr> <td> <a href="constructor_examples_specwin.html#plist">Construct a SPECWIN object from a parameter list (PLIST) object</a> </td> </tr> </table> <!-- --------------- NEXT EXAMPLE --------------- --> <hr> <h2 class="title"><a href="gui_specwin.html">For help in designing a SPECWIN object, see also the Spectral Window GUI documentation</a></h2> <hr /> <h2 class="title"></h2> <h2 class="title"><a name="empty"></a>Construct empty SPECWIN object</h2> <p>The following example creates an empty specwin object</p> <div class="fragment"><pre class="programlisting"> w = specwin() -------- None ------------ alpha: -1 psll: -1 rov: -1 nenbw: -1 w3db: -1 flatness: -1 ws: -1 ws2: -1 win: 1 -------------------------- </pre></div> <!-- --------------- NEXT EXAMPLE --------------- --> <hr> <h2 class="title"><a name="xml_file"></a>Construct a SPECWIN object by loading the object from a file</h2> <p>The following example creates a new specwin object by loading the specwin object from disk.</p> <div class="fragment"><pre class="programlisting"> p = specwin(<span class="string">'specwin.mat'</span>) p = specwin(<span class="string">'specwin.xml'</span>) </pre></div> <!-- --------------- NEXT EXAMPLE --------------- --> <hr> <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 code fragment creates a 100-point Hanning window: </p> <div class="fragment"><pre> >> w = specwin(<span class="string">'Hanning'</span>, 100) -------- Hanning ------------ alpha: 0 psll: 31.5 rov: 50 nenbw: 1.5 w3db: 1.4382 flatness: -1.4236 ws: 50 ws2: 37.5 win: 100 ----------------------------- </pre></div> <p><a href="specwin_description.html">List of available window functions</a></p> <!-- --------------- NEXT EXAMPLE --------------- --> <hr> <h2 class="title"><a name="kaiser"></a>Construct a SPECWIN Kaiser window with the prescribed psll</h2> <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> <div class="fragment"><pre> >> w = specwin(<span class="string">'Kaiser'</span>, 100, 150) -------- Kaiser ------------ alpha: 6.18029 psll: 150 rov: 73.3738 nenbw: 2.52989 w3db: 2.38506 flatness: -0.52279 ws: 28.2558 ws2: 20.1819 win: 100 ---------------------------- </pre></div> <!-- --------------- NEXT EXAMPLE --------------- --> <hr> <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. <table border="0" summary="Simple list" class="simplelist_nottable_last" width="50%"> <tr valign="top"> <td width="25%"> <p>'Name'</p> </td> <td width="75%"> <p>Spectral window name [default: 'Kaiser']</p> </td> </tr> <tr valign="top"> <td width="25%"> <p>'N'</p> </td> <td width="75%"> <p>Spectral window length [default: 10]</p> </td> </tr> <tr valign="top"> <td width="25%"> <p>'PSLL'</p> </td> <td width="75%"> <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); w = specwin(pl) -------- Kaiser ------------ alpha: 3.21394 psll: 75 rov: 63.4095 nenbw: 1.85055 w3db: 1.75392 flatness: -0.963765 ws: 389.305 ws2: 280.892 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); w =specwin(pl) -------- Hanning ------------ alpha: 0 psll: 31.5 rov: 50 nenbw: 1.5 w3db: 1.4382 flatness: -1.4236 ws: 500 ws2: 375 win: 1000 ----------------------------- </pre></div>