p>When set to leftmost, cutoff frequency doesn’t change regardless of
  the pitch of note. When set to rightmost, cutoff frequency precisely
  follows the pitch of note.</p>
  </dd>
  </dl>
  <h3 id="tuning"><a href="#tuning" class="header-anchor"
  aria-hidden="true">Tuning</a></h3>
  <dl>
  <dt>Semitone, Cent</dt>
  <dd>
  <p>Pitch in semitone or cent. 1 semitone equals to 100 cents.</p>
  </dd>
  <dt>Equal Temp., A4 [Hz]</dt>
  <dd>
  <p><code>Equal Temp.</code> is abbreviation of equal temperament (ET