# CSJ2K.j2k.wavelet.analysis.AnWTFilterFloatLift9x7.getHPSynthesisFilter

## Content

<div class="doc-site-dotnet-api-container">



<h1 id="CSJ2K_j2k_wavelet_analysis_AnWTFilterFloatLift9x7_getHPSynthesisFilter_" data-uid="CSJ2K.j2k.wavelet.analysis.AnWTFilterFloatLift9x7.getHPSynthesisFilter*">getHPSynthesisFilter Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="CSJ2K_j2k_wavelet_analysis_AnWTFilterFloatLift9x7_getHPSynthesisFilter_" data-uid="CSJ2K.j2k.wavelet.analysis.AnWTFilterFloatLift9x7.getHPSynthesisFilter*"></a>
<h4 id="CSJ2K_j2k_wavelet_analysis_AnWTFilterFloatLift9x7_getHPSynthesisFilter" data-uid="CSJ2K.j2k.wavelet.analysis.AnWTFilterFloatLift9x7.getHPSynthesisFilter">getHPSynthesisFilter()</h4>
<div class="markdown level1 summary"><p>Returns the time-reversed high-pass synthesis waveform of the filter,
which is the high-pass filter. This is the time-reversed impulse
response of the high-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>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public override float[] getHPSynthesisFilter()</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Overrides Function getHPSynthesisFilter() 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>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.single">float</a>[]</td>
      <td><p>The time-reversed high-pass synthesis waveform of the filter.</p>
</td>
    </tr>
  </tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="CSJ2K.j2k.wavelet.analysis.AnWTFilter.getHPSynthesisFilter.html#CSJ2K_j2k_wavelet_analysis_AnWTFilter_getHPSynthesisFilter">AnWTFilter.getHPSynthesisFilter()</a></div>
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