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

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  23 <p class="p1"><span class="s1"><b>Paddpre<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></span><b>event pattern that adds to existing value of one key</b></p>
  24 <p class="p2"><br></p>
  25 <p class="p1"><b>superclass: FilterPattern</b></p>
  26 <p class="p2"><br></p>
  27 <p class="p1"><b>Pset(name, value, pattern)</b></p>
  28 <p class="p2"><br></p>
  29 <p class="p1">adds a value in an event, before it is passed up the stream.</p>
  30 <p class="p1">to add to the value after it has been passed to the stream, use <b>Padd</b></p>
  31 <p class="p2"><br></p>
  32 <p class="p2"><br></p>
  33 <p class="p3">(</p>
  34 <p class="p3"><span class="s2">var</span> a, b;</p>
  35 <p class="p3">a = <span class="s2">Paddpre</span>(<span class="s3">\x</span>, 8, <span class="s2">Pbind</span>(<span class="s3">\dur</span>, 0.5));</p>
  36 <p class="p3">x = a.asStream;</p>
  37 <p class="p3">9.do({ x.next(<span class="s2">(\x:4)</span>).postln; });</p>
  38 <p class="p3">)</p>
  39 <p class="p2"><br></p>
  40 <p class="p1">Paddpre does not override incoming values:</p>
  41 <p class="p2"><br></p>
  42 <p class="p3">(</p>
  43 <p class="p3"><span class="s2">var</span> a, b;</p>
  44 <p class="p3">a = <span class="s2">Paddpre</span>(<span class="s3">\freq</span>, 302, <span class="s2">Pset</span>(<span class="s3">\freq</span>, 500, <span class="s2">Pbind</span>(<span class="s3">\dur</span>, 0.3)));</p>
  45 <p class="p3">x = a.asStream;</p>
  46 <p class="p3">9.do({ x.next(<span class="s2">Event</span>.default).postln; });</p>
  47 <p class="p3">)</p>
  48 <p class="p4"><br></p>
  49 <p class="p2"><br></p>
  50 <p class="p1"><b>value</b> can be a pattern or a stream. the resulting stream ends when that incoming stream ends</p>
  51 <p class="p2"><br></p>
  52 <p class="p3">(</p>
  53 <p class="p3"><span class="s2">var</span> a, b;</p>
  54 <p class="p3">a = <span class="s2">Paddpre</span>(<span class="s3">\legato</span>, <span class="s2">Pseq</span>([0.2, 0.4], 2), <span class="s2">Pbind</span>(<span class="s3">\dur</span>, 0.5));</p>
  55 <p class="p3">x = a.asStream;</p>
  56 <p class="p3">9.do({ x.next(<span class="s2">Event</span>.default).postln; });</p>
  57 <p class="p3">)</p>
  58 <p class="p4"><br></p>
  59 <p class="p4"><br></p>
  60 <p class="p1">sound example</p>
  61 <p class="p4"><br></p>
  62 <p class="p3">(</p>
  63 <p class="p5"><span class="s2">SynthDef</span><span class="s4">(</span>\sinegrain<span class="s4">,<span class="Apple-converted-space"> </span></span></p>
  64 <p class="p3"><span class="Apple-tab-span">     </span>{ <span class="s2">arg</span> out=0, freq=440, sustain=0.02;</p>
  65 <p class="p3"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s2">var</span> env;</p>
  66 <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(0.001, sustain), 1, doneAction:2);</p>
  67 <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 * 0.1))</p>
  68 <p class="p3"><span class="Apple-tab-span">     </span>}).add;</p>
  69 <p class="p3">)</p>
  70 <p class="p4"><br></p>
  71 <p class="p4"><br></p>
  72 <p class="p3">(</p>
  73 <p class="p5"><span class="s4">a = </span><span class="s2">Pbind</span><span class="s4">(</span>\dur<span class="s4">, 0.5, </span>\instrument<span class="s4">, </span>\sinegrain<span class="s4">);</span></p>
  74 <p class="p3">b = <span class="s2">Paddpre</span>(<span class="s3">\freq</span>, <span class="s2">Pseq</span>([10, 30, 100], <span class="s2">inf</span>), a);</p>
  75 <p class="p3">b.play;</p>
  76 <p class="p3">)</p>
  77 <p class="p4"><br></p>
  78 <p class="p4"><br></p>
  79 <p class="p4"><br></p>
  80 <p class="p4"><br></p>
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