-6-adding-parameters">Example 6: Adding parameters</h3>
<p>We will now generalize our echo with parameters to control its duration and feedback level:</p>
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bounce(d,f) = @(d) : *(f);
monoecho(d,f) = +~bounce(d,f);
stereoecho(d,f) = monoecho(d,f), monoecho(d,f);

process = stereoecho(44100/4,0.75); 

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