view m-toolbox/html_help/help/ug/constructor_examples_specwin.html @ 6:2b57573b11c7
database-connection-manager
Add utils.mysql.execute
| author |
Daniele Nicolodi <nicolodi@science.unitn.it> |
| date |
Mon, 05 Dec 2011 16:20:06 +0100 (2011-12-05) |
| parents |
f0afece42f48 |
| children |
|
line source
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html lang="en">
<head>
<meta name="generator" content=
"HTML Tidy for Mac OS X (vers 1st December 2004), see www.w3.org">
<meta http-equiv="Content-Type" content=
"text/html; charset=us-ascii">
<title>Constructor examples of the SPECWIN class (LTPDA Toolbox)</title>
<link rel="stylesheet" href="docstyle.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.52.2">
<meta name="description" content=
"Presents an overview of the features, system requirements, and starting the toolbox.">
</head>
<body>
<a name="top_of_page" id="top_of_page"></a>
<p style="font-size:1px;"> </p>
<table class="nav" summary="Navigation aid" border="0" width=
"100%" cellpadding="0" cellspacing="0">
<tr>
<td valign="baseline"><b>LTPDA Toolbox</b></td><td><a href="../helptoc.html">contents</a></td>
<td valign="baseline" align="right"><a href=
"constructor_examples_plist.html"><img src="b_prev.gif" border="0" align=
"bottom" alt="Constructor examples of the PLIST class"></a> <a href=
"bycategory.html"><img src="b_next.gif" border="0" align=
"bottom" alt="Functions - By Category"></a></td>
</tr>
</table>
<h1 class="title"><a name="f3-12899" id="f3-12899"></a>Constructor examples of the SPECWIN class</h1>
<hr>
<p>
<!-- -------------------------------------------------- -->
<!-- --------------- 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>
</p>
<br>
<br>
<table class="nav" summary="Navigation aid" border="0" width=
"100%" cellpadding="0" cellspacing="0">
<tr valign="top">
<td align="left" width="20"><a href="constructor_examples_plist.html"><img src=
"b_prev.gif" border="0" align="bottom" alt=
"Constructor examples of the PLIST class"></a> </td>
<td align="left">Constructor examples of the PLIST class</td>
<td> </td>
<td align="right">Functions - By Category</td>
<td align="right" width="20"><a href=
"bycategory.html"><img src="b_next.gif" border="0" align=
"bottom" alt="Functions - By Category"></a></td>
</tr>
</table><br>
<p class="copy">©LTP Team</p>
</body>
</html>
