="#fdn-1" class="header-anchor"
  aria-hidden="true">FDN</a></h4>
  <p>Individual control for each filter is added compared to ClangSynth.
  This increases flexibility, and CPU load.</p>
  <dl>
  <dt>Cutoff Slope</dt>
  <dd>
  <p>Amount of increment or decrement to the filter cutoff. The amount
  is proportional to the order of harmonics.</p>
  </dd>
  <dt>Q Slope</dt>
  <dd>
  <p>Amount of increment or decrement to the filter Q. The amount is
  proportional to the order of harmonics.</p>
  </dd>
  <dt>LP/H