tor pitch.</p>
  <p>The value is not visible on GUI, but the unit is cent, which is
  1/100 of a semitone.</p>
  </dd>
  <dt>Wave Shape</dt>
  <dd>
  <p>Oscillator wave shape.</p>
  <p>When <code>Saw-Pulse</code> is 0, the value [0, 0.5, 1] matches to
  [Upward Sawtooth, Triangle, Downward Sawtooth]. When
  <code>Saw-Pulse</code> is 1, the value becomes the duty ratio of pulse
  wave.</p>
  </dd>
  <dt>Saw-Pulse</dt>
  <dd>
  <p>Mixing ratio of sawtooth and pulse wave in a oscillator.</p>
  <p>When <code>Sa