ack-control">Example 7: Slider for the feedback control</h3>
<p>We can now add a slider to control the level of feedback:</p>
<!-- faust-run -->
<div class="faust-run"><img src="exfaust21/exfaust21.svg" class="mx-auto d-block">
<faust-editor><!--

bounce(d,f) = @(d) : *(f);
monoecho(d,f) = +~bounce(d,f);
stereoecho(d,f) = monoecho(d,f), monoecho(d,f);

process = stereoecho(44100/4, hslider("feedback", 0, 0, 1, 0.01)); 

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

<h3 id="example-8-freeze-effect">Exa