# CSJ2K.j2k.wavelet.analysis.AnWTFilter.getLPSynthesisFilter

## Content

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<h1 id="CSJ2K_j2k_wavelet_analysis_AnWTFilter_getLPSynthesisFilter_" data-uid="CSJ2K.j2k.wavelet.analysis.AnWTFilter.getLPSynthesisFilter*">getLPSynthesisFilter Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="CSJ2K_j2k_wavelet_analysis_AnWTFilter_getLPSynthesisFilter_" data-uid="CSJ2K.j2k.wavelet.analysis.AnWTFilter.getLPSynthesisFilter*"></a>
<h4 id="CSJ2K_j2k_wavelet_analysis_AnWTFilter_getLPSynthesisFilter" data-uid="CSJ2K.j2k.wavelet.analysis.AnWTFilter.getLPSynthesisFilter">getLPSynthesisFilter()</h4>
<div class="markdown level1 summary"><p>Returns the time-reversed low-pass synthesis waveform of the filter,
which is the low-pass filter. This is the time-reversed impulse
response of the low-pass synthesis filter. It is used to calculate the
L2-norm of the synthesis basis functions for a particular subband (also
called energy weight).</p>
<pre><code>       &lt;p&gt;The returned array may not be modified (i.e. a reference to the
       internal array may be returned by the implementation of this
       method).&lt;/p&gt;
</code></pre>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public abstract float[] getLPSynthesisFilter()</code></pre>
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  <pre><code class="lang-vbnet hljs">Public MustOverride Function getLPSynthesisFilter() As Single()</code></pre>
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<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
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  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.single">float</a>[]</td>
      <td><p>The time-reversed low-pass synthesis waveform of the filter.</p>
</td>
    </tr>
  </tbody>
</table>
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