uble &amp;&#160;</td>
          <td class="paramname"><em>_nextValue</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">
<p>Get the sample-accurate value of the parameter at the given sample offset. Pass in the last known normalized value. Returns true if dPreviou