r parameters.</p>
  <dl>
  <dt>Cut</dt>
  <dd>
  <p>Cutoff frequency of lowpass filter.</p>
  </dd>
  <dt>Q</dt>
  <dd>
  <p>Q factor of lowpass filter.</p>
  </dd>
  <dt>A, D</dt>
  <dd>
  <p>Cutoff envelope parameters.</p>
  <ul>
  <li><code>A</code>: Attack time.</li>
  <li><code>D</code>: Decay time.</li>
  </ul>
  </dd>
  <dt>Env&gt;Cut</dt>
  <dd>
  <p>Modulation amount from envelope to cutoff frequency.</p>
  </dd>
  <dt>Key</dt>
  <dd>
  <p>Cutoff tuning ratio depending on the pitch of note.</p>
  <