# CSJ2K.j2k.wavelet.Subband.anGainExp

## Content

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<h1 id="CSJ2K_j2k_wavelet_Subband_anGainExp" data-uid="CSJ2K.j2k.wavelet.Subband.anGainExp" class="text-break">anGainExp Field
</h1>
<div class="markdown level0 summary"><p>The base 2 exponent of the analysis gain of the subband. The analysis
gain of a subband is defined as the gain of the previous subband
(i.e. the one from which this one was obtained) multiplied by the line
gain and by the column gain. The line (column) gain is the gain of the
line (column) filter that was used to obtain it, which is the DC gain
for a low-pass filter and the Nyquist gain for a high-pass filter. It
is 0 by default.</p>
<pre><code>       &lt;p&gt;Using the base 2 exponent of the value contrains the possible gains
       to powers of 2. However this is perfectly compatible to the filter
       normalization policy assumed here. See the split() method for more
       details.&lt;/p&gt;
</code></pre>
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<div class="markdown level0 conceptual"></div>
<h6><strong>Namespace</strong>: <a class="xref" href="CSJ2K.j2k.wavelet.html">CSJ2K.j2k.wavelet</a></h6>
<h6><strong>Assembly</strong>: C1.WPF.ReportViewer.4.6.2.dll</h6>
<h5 id="CSJ2K_j2k_wavelet_Subband_anGainExp_syntax">Syntax</h5>
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  <pre><code class="lang-csharp hljs">public int anGainExp</code></pre>
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  <pre><code class="lang-vbnet hljs">Public anGainExp As Integer</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.int32">int</a></td>
      <td>The base 2 exponent of the analysis gain of the subband. The analysis gain of a subband is defined as the gain of the previous subband (i.e. the one from which this one was obtained) multiplied by the line gain and by the column gain. The line (column) gain is the gain of the line (column) filter that was used to obtain it, which is the DC gain for a low-pass filter and the Nyquist gain for a high-pass filter. It is 0 by default.        &lt;p&gt;Using the base 2 exponent of the value contrains the possible gains        to powers of 2. However this is perfectly compatible to the filter        normalization policy assumed here. See the split() method for more        details.&lt;/p&gt;</td>
    </tr>
  </tbody>
</table>
</div>