s
  similarly.</p>
  <p>Pulse train is generated by BLIT (band-limited impulse train)
  algorithm. The naive pulse train used in noise generation is not
  related to this one.</p>
  <dl>
  <dt>Noise/Pulse</dt>
  <dd>
  <p>Mixing ratio of noise and pulse train.</p>
  </dd>
  <dt>LP Cutoff [st.]</dt>
  <dd>
  <p>Lowpass filter cutoff frequency.</p>
  </dd>
  <dt>LP Q</dt>
  <dd>
  <p>Lowpass filter Q.</p>
  </dd>
  <dt>LP Key</dt>
  <dd>
  <p>Key follow amount to <code>LP Cutoff</code>.</p>
  <p>When <code>LP