               hslider("Q", 1, 1, 100, 0.01),
                    hslider("gain", 1, 0, 2, 0.01));

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

<p>The used <a href="https://faustlibraries.grame.fr/libs/filters/#resonlp">fi.resonlp</a> filter has an argument to select the desired frequency, a Q factor to shape the frequency range, and a gain factor.</p>
<h3 id="example-6-fir">Example 6: fir</h3>
<p>Here a <a href="https://en.wikipedia.org/wiki/Finite_impulse_response">FIR</a> filter is used: </p>
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