ust.lib");

process = no.noise * hslider("noise", 0.5, 0, 1, 0.01) : fi.highpass(3, hslider("lowfreq", 400, 20, 20000, 1));

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

<p>The used <a href="https://faustlibraries.grame.fr/libs/filters/#highpass">fi.highpass</a> filter can be defined with an argument that modifies the frequency attenuation slope.</p>
<h3 id="example-4-bandpass">Example 4: bandpass</h3>
<p>By combining a low-pass and high-pass filter in sequence, a <a href="https://en.wikipedia.org/wi