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  <h1 class="title"><a name="f3-12899" id="f3-12899"></a>Applying digital filters to data</h1>
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              <td>
                <a href="#Applyfiltdesc">Description</a>
              </td>
              <td>Digital filtering with LTPDA filters objects.</td>
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              <td>
                <a href="#Applyfiltexample">Examples</a>
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              <td>How to filter a data series in LTPDA.</td>
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<!-- ===== filtering in LTPDA description ===== -->
<h2><a name="Applyfiltdesc">Description</a></h2>
<p>
  Digital filtering in LTPDA can be performed by a call to the <tt>ao/filter</tt> method.
  <tt>ao/filter</tt> method is a wrapper of the standard MATLAB filter method.
  Details of the core algorithm can be found in the proper
  <a href="matlab:doc('filter')">documentation page</a>.
</p>


<!-- ===== Examples ===== -->

<h2><a name="Applyfiltexample">Examples</a></h2>
<p>
  Given an input analysis object (can be a time series or a frequency series object)
  <tt>a_in</tt>, digital filtering operation can be easily performed:
</p>

<div class="fragment"><pre>

    a_out = filter(a_in,fobj)

</pre></div>

<p>
  Where <tt>fobj</tt> is a filter. It can be a <a href="sigproc_iir.html">MIIR</a>,
  a <a href="sigproc_fir.html">MFIR</a>
  or a <a href="sigproc_filterbanks.html">FILTERBANK</a> object.
</p>
<p>
  The filter object <tt>fobj</tt> can be also embedded in a plist
</p>

<div class="fragment"><pre>

    pl = plist(<span class="string">'filter'</span>, fobj);
    a_out = filter(a_in,pl)

</pre></div>


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author	Daniele Nicolodi <nicolodi@science.unitn.it>
date	Mon, 05 Dec 2011 18:04:03 +0100
parents	f0afece42f48
children