lider("volume", 0.1, 0, 1, 0.01) : *;

--></faust-editor>
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</div>
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<h3 id="example-7-mono-amplifier">Example 7: Mono Amplifier</h3>
<p>We have written very simple programs so far, that fit into one line of code. We will now introduce additional definitions. A definition should be understood as a way of giving a name to something, which saves us from typing the definition every time and makes the program easier to understand:</p>
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<div class="faust-run"><img src="exf