/li>
        <li><span class="parameter">release</span>
         Release value, defaults to 0.3.
        </li>
        <li><span class="parameter">level</span>
         Level value, accepts y_min to y_max, defaults to 1.
        </li>
        <li><span class="parameter">curve</span>
         Curve of envelope, accepts "lin", "exp" or a number where 0 is linear and positive and negative numbers curve the envelope up and down, defaults to -4.
        </li>
    </ul>

    <h3>Returns:</h3>
    <ol>

        In