Help/UGens/Filters/MoogFF.html

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  22 <p class="p1"><span class="s1"><b>MoogFF<span class="Apple-tab-span">   </span></b></span><b>Moog VCF implementation, designed by Federico Fontana</b></p>
  23 <p class="p2"><br></p>
  24 <p class="p3"><b>MoogFF.ar(in, freq, gain, reset)</b></p>
  25 <p class="p2"><br></p>
  26 <p class="p3">A digital implementation of the Moog VCF (filter).</p>
  27 <p class="p2"><br></p>
  28 <p class="p3"><b><span class="Apple-tab-span">  </span>in</b> - the input signal</p>
  29 <p class="p3"><span class="Apple-tab-span">     </span><b>freq</b> - the cutoff frequency</p>
  30 <p class="p3"><span class="Apple-tab-span">     </span><b>gain</b> - the filter resonance gain, between zero and 4</p>
  31 <p class="p3"><span class="Apple-tab-span">     </span><b>reset</b> - when greater than zero, this will reset the state of the digital filters at the beginning of a computational block.</p>
  32 <p class="p2"><br></p>
  33 <p class="p3">The design of this filter is described in the conference paper Fontana, F. (2007) <b><i>Preserving the Digital Structure of the Moog VCF</i></b>. In Proc. ICMC07, Copenhagen, 25-31 August 2007</p>
  34 <p class="p2"><br></p>
  35 <p class="p2"><br></p>
  36 <p class="p3"><b>Examples</b></p>
  37 <p class="p2"><br></p>
  38 <p class="p3">s.boot;</p>
  39 <p class="p4">// Play it with the mouse...</p>
  40 <p class="p3">x = { <span class="s2">MoogFF</span>.ar(<span class="s2">WhiteNoise</span>.ar(01.1), <span class="s2">MouseY</span>.kr(100, 10000, 1), <span class="s2">MouseX</span>.kr(0, 4)) }.play(s);</p>
  41 <p class="p3">x.free;</p>
  42 <p class="p2"><br></p>
  43 <p class="p4">// Mmmm, throbby</p>
  44 <p class="p3">x = { <span class="s2">MoogFF</span>.ar(<span class="s2">Pulse</span>.ar([40,121],[0.3,0.7]),<span class="s2">SinOsc</span>.kr(<span class="s2">LFNoise0</span>.kr(0.42).range(0.001,2.2)).range(30,4200), 0.83 * 4)}.play(s);</p>
  45 <p class="p3">x.free;</p>
  46 <p class="p2"><br></p>
  47 <p class="p2"><br></p>
  48 <p class="p5"><i>Original Java code created by F. Fontana - August 2007 - </i><a href="mailto:federico.fontana@univr.it"><span class="s3"><i>federico.fontana@univr.it</i></span></a></p>
  49 <p class="p5"><i>Ported to C++ for SuperCollider by Dan Stowell</i></p>
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