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+<!-- $Id: constructor_examples_zero_content.html,v 1.1 2008/03/30 20:40:04 ingo Exp $ -->
+
+<!-- -------------------------------------------------- -->
+<!-- --------------- BEGIN CONTENT FILE --------------- -->
+<!-- -------------------------------------------------- -->
+
+<!-- --------------- Link box: begin --------------- -->
+<table border="0" summary="Simple list" class="simplelist_nottable_last">
+  <tr>
+    <td>
+      <a href="constructor_examples_zero.html#empty">Construct empty ZERO object</a>
+    </td>
+  </tr>
+  <tr>
+    <td>
+      <a href="constructor_examples_zero.html#xml_file">Construct a ZERO object by loading the object from a file</a>
+    </td>
+  </tr>
+  <tr>
+    <td>
+      <a href="constructor_examples_zero.html#real">Construct a ZERO object with a real zero</a>
+    </td>
+  </tr>
+  <tr>
+    <td>
+      <a href="constructor_examples_zero.html#complex">Construct a ZERO object with a complex zero</a>
+    </td>
+  </tr>
+</table>
+
+<p>Poles are specified by in the LTPDA Toolbox by a frequency, f, and (optionally) a quality factor, Q.</p>
+<!-- --------------- Link box: end --------------- -->
+
+<!-- --------------- NEXT EXAMPLE --------------- -->
+
+<hr>
+<h2 class="title"><a name="empty"></a>Construct empty ZERO object</h2>
+<p>The following example creates an empty zero object</p>
+<div class="fragment"><pre class="programlisting">
+p = zero()
+---- zero 1 ----
+None: NaN Hz
+----------------
+</pre></div>
+
+<!-- --------------- NEXT EXAMPLE --------------- -->
+
+<hr>
+<h2 class="title"><a name="xml_file"></a>Construct a ZERO object by loading the object from a file</h2>
+<p>The following example creates a new zero object by loading the zero object from disk.</p>
+<div class="fragment"><pre class="programlisting">
+p = zero(<span class="string">'zero.mat'</span>)
+p = zero(<span class="string">'zero.xml'</span>)
+</pre></div>
+
+<!-- --------------- NEXT EXAMPLE --------------- -->
+
+<hr>
+<h2 class="title"><a name="real"></a>Construct a ZERO object with a real zero</h2>
+<p>The following code fragment creates a real zero at 1Hz:</p>
+<div class="fragment"><pre class="programlisting">
+p = zero(1)
+---- zero 1 ----
+real zero: 1 Hz
+----------------
+</pre></div>
+<p>It is also possible to use a parameter list (PLIST) object</p>
+<div class="fragment"><pre class="programlisting">
+pl = plist(<span class="string">'f'</span>, 1);
+
+p = zero(pl)
+---- zero 1 ----
+real zero: 1 Hz
+----------------
+</pre></div>
+
+<!-- --------------- NEXT EXAMPLE --------------- -->
+
+<hr>
+<h2 class="title"><a name="complex"></a>Construct a ZERO object with a complex zero</h2>
+<p>To create a complex zero, you can specify a quality factor. For example</p>
+<div class="fragment"><pre class="programlisting">
+p = zero(10,4)
+---- zero 1 ----
+complex zero: 10 Hz, Q=4 [-0.0019894+0.015791i]
+----------------
+</pre></div>
+<p>It is also possible to use a parameter list (PLIST) object</p>
+<div class="fragment"><pre class="programlisting">
+pl = plist(<span class="string">'f'</span>, 10, <span class="string">'q'</span>, 4);
+
+zero(pl)
+---- zero 1 ----
+complex zero: 10 Hz, Q=4 [-0.0019894+0.015791i]
+----------------
+</pre></div>
+
+<!-- ------------------------------------------------ -->
+<!-- --------------- END CONTENT FILE --------------- -->
+<!-- ------------------------------------------------ -->