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author Daniele Nicolodi <nicolodi@science.unitn.it>
date Wed, 23 Nov 2011 19:22:13 +0100
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1 <!-- $Id: constructor_examples_zero_content.html,v 1.1 2008/03/30 20:40:04 ingo Exp $ -->
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2
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3 <!-- -------------------------------------------------- -->
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4 <!-- --------------- BEGIN CONTENT FILE --------------- -->
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5 <!-- -------------------------------------------------- -->
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6
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7 <!-- --------------- Link box: begin --------------- -->
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8 <table border="0" summary="Simple list" class="simplelist_nottable_last">
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9 <tr>
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10 <td>
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11 <a href="constructor_examples_zero.html#empty">Construct empty ZERO object</a>
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12 </td>
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13 </tr>
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14 <tr>
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15 <td>
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16 <a href="constructor_examples_zero.html#xml_file">Construct a ZERO object by loading the object from a file</a>
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17 </td>
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18 </tr>
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19 <tr>
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20 <td>
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21 <a href="constructor_examples_zero.html#real">Construct a ZERO object with a real zero</a>
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22 </td>
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23 </tr>
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24 <tr>
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25 <td>
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26 <a href="constructor_examples_zero.html#complex">Construct a ZERO object with a complex zero</a>
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27 </td>
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28 </tr>
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29 </table>
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30
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31 <p>Poles are specified by in the LTPDA Toolbox by a frequency, f, and (optionally) a quality factor, Q.</p>
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32 <!-- --------------- Link box: end --------------- -->
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33
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34 <!-- --------------- NEXT EXAMPLE --------------- -->
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35
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36 <hr>
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37 <h2 class="title"><a name="empty"></a>Construct empty ZERO object</h2>
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38 <p>The following example creates an empty zero object</p>
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39 <div class="fragment"><pre class="programlisting">
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40 p = zero()
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41 ---- zero 1 ----
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42 None: NaN Hz
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43 ----------------
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44 </pre></div>
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45
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46 <!-- --------------- NEXT EXAMPLE --------------- -->
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47
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48 <hr>
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49 <h2 class="title"><a name="xml_file"></a>Construct a ZERO object by loading the object from a file</h2>
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50 <p>The following example creates a new zero object by loading the zero object from disk.</p>
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51 <div class="fragment"><pre class="programlisting">
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52 p = zero(<span class="string">'zero.mat'</span>)
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53 p = zero(<span class="string">'zero.xml'</span>)
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54 </pre></div>
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55
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56 <!-- --------------- NEXT EXAMPLE --------------- -->
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57
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58 <hr>
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59 <h2 class="title"><a name="real"></a>Construct a ZERO object with a real zero</h2>
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60 <p>The following code fragment creates a real zero at 1Hz:</p>
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61 <div class="fragment"><pre class="programlisting">
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62 p = zero(1)
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63 ---- zero 1 ----
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64 real zero: 1 Hz
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65 ----------------
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66 </pre></div>
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67 <p>It is also possible to use a parameter list (PLIST) object</p>
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68 <div class="fragment"><pre class="programlisting">
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69 pl = plist(<span class="string">'f'</span>, 1);
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70
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71 p = zero(pl)
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72 ---- zero 1 ----
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73 real zero: 1 Hz
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74 ----------------
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75 </pre></div>
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76
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77 <!-- --------------- NEXT EXAMPLE --------------- -->
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78
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79 <hr>
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80 <h2 class="title"><a name="complex"></a>Construct a ZERO object with a complex zero</h2>
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81 <p>To create a complex zero, you can specify a quality factor. For example</p>
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82 <div class="fragment"><pre class="programlisting">
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83 p = zero(10,4)
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84 ---- zero 1 ----
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85 complex zero: 10 Hz, Q=4 [-0.0019894+0.015791i]
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86 ----------------
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87 </pre></div>
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88 <p>It is also possible to use a parameter list (PLIST) object</p>
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89 <div class="fragment"><pre class="programlisting">
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90 pl = plist(<span class="string">'f'</span>, 10, <span class="string">'q'</span>, 4);
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91
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92 zero(pl)
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93 ---- zero 1 ----
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94 complex zero: 10 Hz, Q=4 [-0.0019894+0.015791i]
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95 ----------------
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96 </pre></div>
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97
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98 <!-- ------------------------------------------------ -->
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99 <!-- --------------- END CONTENT FILE --------------- -->
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100 <!-- ------------------------------------------------ -->