Help/Streams-Patterns-Events/Patterns/Prand.html

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  28 <p class="p1"><span class="s1"><b>Prand</b></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="Apple-tab-span">    </span><b>embed values randomly chosen from a list</b></p>
  29 <p class="p2"><br></p>
  30 <p class="p1"><b>superclass: </b><a href="ListPattern.html"><span class="s2">ListPattern</span></a></p>
  31 <p class="p2"><br></p>
  32 <p class="p1">Embed one item from the list at random for each repeat.<span class="Apple-converted-space"> </span></p>
  33 <p class="p2"><br></p>
  34 <p class="p1">see also: <a href="Pxrand.html"><span class="s3">Pxrand</span></a>, <a href="Pwrand.html"><span class="s3">Pwrand</span></a></p>
  35 <p class="p2"><br></p>
  36 <p class="p3">(</p>
  37 <p class="p3"><span class="s2">var</span> a, b;</p>
  38 <p class="p3">a = <span class="s2">Prand</span>([1, 2, 3, 4, 5], 6);<span class="Apple-tab-span">       </span><span class="s4">// return 6 items</span></p>
  39 <p class="p3">b = a.asStream;</p>
  40 <p class="p3">7.do({ b.next.postln; });</p>
  41 <p class="p3">)</p>
  42 <p class="p4"><br></p>
  43 <p class="p5">// return also a subpattern:</p>
  44 <p class="p3">(</p>
  45 <p class="p3"><span class="s2">var</span> a, b;</p>
  46 <p class="p3">a = <span class="s2">Prand</span>([1, <span class="s2">Pseq</span>([10, 20, 30]), 2, 3, 4, 5], 6);<span class="Apple-tab-span">   </span><span class="s4">// return 6 items</span></p>
  47 <p class="p3">b = a.asStream;</p>
  48 <p class="p3">7.do({ b.next.postln; });</p>
  49 <p class="p3">)</p>
  50 <p class="p6"><br></p>
  51 <p class="p1">Prand used as a sequence of pitches:</p>
  52 <p class="p6"><br></p>
  53 <p class="p3">(</p>
  54 <p class="p7"><span class="s2">SynthDef</span><span class="s5">(</span>\help_sinegrain<span class="s5">,<span class="Apple-converted-space"> </span></span></p>
  55 <p class="p3"><span class="Apple-tab-span">     </span>{ <span class="s2">arg</span> out=0, freq=440, sustain=0.05;</p>
  56 <p class="p3"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s2">var</span> env;</p>
  57 <p class="p3"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>env = <span class="s2">EnvGen</span>.kr(<span class="s2">Env</span>.perc(0.01, sustain, 0.2), doneAction:2);</p>
  58 <p class="p3"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s2">Out</span>.ar(out, <span class="s2">SinOsc</span>.ar(freq, 0, env))</p>
  59 <p class="p3"><span class="Apple-tab-span">     </span>}).add;</p>
  60 <p class="p3">)</p>
  61 <p class="p4"><br></p>
  62 <p class="p3">(</p>
  63 <p class="p3">a = <span class="s2">Prand</span>(#[60, 61, 63, 65, 72], <span class="s2">inf</span>).asStream;</p>
  64 <p class="p8">Routine<span class="s5">({</span></p>
  65 <p class="p3"><span class="Apple-tab-span">     </span>loop({</p>
  66 <p class="p3"><span class="Apple-tab-span">     </span><span class="s2">Synth</span>(<span class="s6">\help_sinegrain</span>, [<span class="s6">\freq</span>, a.next.midicps]);</p>
  67 <p class="p3"><span class="Apple-tab-span">     </span>0.2.wait;</p>
  68 <p class="p3"><span class="Apple-tab-span">     </span>})</p>
  69 <p class="p3">}).play;</p>
  70 <p class="p3">)</p>
  71 <p class="p4"><br></p>
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