Help/UGens/Delays/Pluck.html

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  25 <p class="p1"><span class="s1"><b>Pluck<span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></b></span><b>a Karplus-Strong UGen</b></p>
  26 <p class="p2"><b></b><br></p>
  27 <p class="p3"><b>Pluck.ar(in, trig, maxdelaytime, delaytime, decaytime, coef, mul, add)</b></p>
  28 <p class="p4"><br></p>
  29 <p class="p3"><b>in</b> - an excitation signal</p>
  30 <p class="p3"><b>trig </b>- upon a negative to positive transition, the excitation signal will be fed into the delay line</p>
  31 <p class="p3"><b>maxdelaytime</b> - the max delay time in seconds (initializes the internal delay buffer).</p>
  32 <p class="p3"><b>delaytime</b> - delay time in seconds.</p>
  33 <p class="p3"><b>decaytime</b> - time for the echoes to decay by 60 decibels. Negative times emphasize odd partials.</p>
  34 <p class="p3"><b>coef</b> - the coef of the internal OnePole filter. Values should be between -1 and +1 (larger values will</p>
  35 <p class="p3"><span class="Apple-tab-span">     </span>be unstable... so be careful!).</p>
  36 <p class="p4"><br></p>
  37 <p class="p5">s.boot;</p>
  38 <p class="p6"><br></p>
  39 <p class="p7">// excitation signal is WhiteNoise, triggered twice a second with varying OnePole coef</p>
  40 <p class="p5">(</p>
  41 <p class="p5"><span class="Apple-tab-span">     </span>{<span class="s2">Pluck</span>.ar(<span class="s2">WhiteNoise</span>.ar(0.1), <span class="s2">Impulse</span>.kr(2), 440.reciprocal, 440.reciprocal, 10,<span class="Apple-converted-space"> </span></p>
  42 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>coef:<span class="s2">MouseX</span>.kr(-0.999, 0.999))</p>
  43 <p class="p5"><span class="Apple-tab-span">     </span>}.play(s)</p>
  44 <p class="p5">)</p>
  45 <p class="p5">s.quit;</p>
  46 <p class="p7">// a group of angry fretless mandolin players</p>
  47 <p class="p5">(</p>
  48 <p class="p5"><span class="Apple-tab-span">     </span>{</p>
  49 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s2">var</span> freq, numparts;</p>
  50 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>numparts = 50;</p>
  51 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>freq = <span class="s2">SinOsc</span>.kr(<span class="s2">Array</span>.fill(numparts, {<span class="s2">Rand</span>(0.05, 0.2)}),<span class="Apple-converted-space"> </span></p>
  52 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s2">Array</span>.fill(numparts, {<span class="s2">Rand</span>(0, 1.0)})).range(1000, 3000);</p>
  53 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s2">LeakDC</span>.ar(</p>
  54 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s2">Pan2</span>.ar(</p>
  55 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s2">Pluck</span>.ar(</p>
  56 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s2">WhiteNoise</span>.ar(0.1).dup(numparts),<span class="Apple-converted-space"> </span></p>
  57 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s2">Impulse</span>.kr(<span class="s2">Array</span>.fill(numparts, {<span class="s2">Rand</span>(10, 12)})),<span class="Apple-converted-space"> </span></p>
  58 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>100.reciprocal, freq.reciprocal, 2, Rand(0.01, 0.2), mul: 1),</p>
  59 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>Array.fill(numparts, {<span class="s2">Rand</span>.new(-1.0, 1.0)}))</p>
  60 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>.sum</p>
  61 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>);</p>
  62 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>}.play(s);</p>
  63 <p class="p5">)</p>
  64 <p class="p8"><br></p>
  65 <p class="p9"><br></p>
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