Help/UGens/Multichannel/Select.html

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
   2 <html>
   3 <head>
   4 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   5 <meta http-equiv="Content-Style-Type" content="text/css">
   6 <title></title>
   7 <meta name="Generator" content="Cocoa HTML Writer">
   8 <meta name="CocoaVersion" content="824.42">
   9 <style type="text/css">
  10 p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica}
  11 p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; color: #0019b7; min-height: 12.0px}
  12 p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px}
  13 p.p4 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; color: #a71e12}
  14 p.p5 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco}
  15 p.p6 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; color: #0019b7}
  16 span.s1 {font: 18.0px Helvetica}
  17 span.s2 {color: #0019b7}
  18 span.Apple-tab-span {white-space:pre}
  19 </style>
  20 </head>
  21 <body>
  22 <p class="p1"><span class="s1"><b>Select<span class="Apple-tab-span">   </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></b></span><b>select one output from many sources</b></p>
  23 <p class="p2"><br></p>
  24 <p class="p3"><br></p>
  25 <p class="p1">superclass: UGen</p>
  26 <p class="p3"><br></p>
  27 <p class="p1">The output is selected from an array of inputs.</p>
  28 <p class="p2"><br></p>
  29 <p class="p1"><b><span class="Apple-tab-span">  </span>Select.ar(which, array)</b></p>
  30 <p class="p1"><b><span class="Apple-tab-span">  </span>Select.kr(which, array)</b></p>
  31 <p class="p2"><br></p>
  32 <p class="p2"><br></p>
  33 <p class="p4">// examples<span class="Apple-converted-space"> </span></p>
  34 <p class="p5">(</p>
  35 <p class="p5">{</p>
  36 <p class="p5"><span class="Apple-tab-span">     </span><span class="s2">var</span> a, cycle;</p>
  37 <p class="p5"><span class="Apple-tab-span">     </span>a = [</p>
  38 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s2">SinOsc</span>.ar,</p>
  39 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s2">Saw</span>.ar,</p>
  40 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s2">Pulse</span>.ar</p>
  41 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>];</p>
  42 <p class="p5"><span class="Apple-tab-span">     </span>cycle = a.size<span class="Apple-converted-space">  </span>* 0.5;</p>
  43 <p class="p5"><span class="Apple-tab-span">     </span><span class="s2">Select</span>.ar(<span class="s2">LFSaw</span>.kr(1.0,0.0,cycle,cycle),a) * 0.2</p>
  44 <p class="p5">}.play;</p>
  45 <p class="p5">)</p>
  46 <p class="p2"><span class="Apple-tab-span">     </span></p>
  47 <p class="p1">Note: all the ugens are continously running. This may not be the most efficient way if each input is<span class="Apple-converted-space">  </span>cpu-expensive.</p>
  48 <p class="p2"><br></p>
  49 <p class="p2"><span class="Apple-tab-span">     </span></p>
  50 <p class="p3"><br></p>
  51 <p class="p4">// used as a sequencer<span class="Apple-converted-space"> </span></p>
  52 <p class="p6">(</p>
  53 <p class="p6">{<span class="Apple-converted-space"> </span></p>
  54 <p class="p5"><span class="s2"><span class="Apple-tab-span">    </span>var</span> a, cycle;</p>
  55 <p class="p5"><span class="Apple-tab-span">     </span>a = <span class="s2">Array</span>.fill(32, { rrand(30,80) }).midicps;</p>
  56 <p class="p5"><span class="Apple-tab-span">     </span>a.postln;</p>
  57 <p class="p5"><span class="Apple-tab-span">     </span>cycle = a.size<span class="Apple-converted-space">  </span>* 0.5;</p>
  58 <p class="p5"><span class="Apple-tab-span">     </span><span class="s2">Saw</span>.ar(</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="s2">Select</span>.kr(<span class="Apple-converted-space"> </span></p>
  60 <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">LFSaw</span>.kr(1.0, 0.0, cycle, cycle),</p>
  61 <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>a</p>
  62 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>),</p>
  63 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0.2<span class="Apple-tab-span"> </span></p>
  64 <p class="p5"><span class="Apple-tab-span">     </span>);</p>
  65 <p class="p5">}.play;</p>
  66 <p class="p6">)</p>
  67 <p class="p2"><br></p>
  68 <p class="p2"><br></p>
  69 <p class="p1">Note that the array is fixed at the time of writing the SynthDef, and the whole array is embedded in the SynthDef file itself.<span class="Apple-converted-space">  </span>For small arrays this is more efficient than reading from a buffer.</p>
  70 <p class="p2"><br></p>
  71 <p class="p2"><br></p>
  72 <p class="p2"><span class="Apple-tab-span">     </span></p>
  73 </body>
  74 </html>