e-15-having-many-channels">Example 15: Having many channels</h3>
<p>We have built a stereo amp, but suppose we wanted to generalize this construction to an arbitrary number of channels. To do so, we will introduce the <code>par(i, N, ...)</code> construction which allows us to put several times an expression in parallel. It is in a way the equivalent of the for() loop of a classical programming language. </p>
<p>In our case we want to indicate the number of channels of our amplifier:</p>
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