") : upfront : en.ar(0.001, 1);
envelop2 = button("gate") : upfront : en.ar(0.5, 0.5);

upfront(x) = x>x';

--></faust-editor>
<br>
</div>
<!-- /faust-run -->

<h1 id="further-readings">Further readings</h1>
<p>The documentation of Faust libraries is available here:</p>
<ul>
<li><strong><a href="https://faustlibraries.grame.fr/">https://faustlibraries.grame.fr/</a></strong></li>
</ul></div>
        </div>
    </div>

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