Help/Streams-Patterns-Events/Patterns/Pmulpre.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="1038.25">
   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: 12.0px Helvetica; min-height: 14.0px}
  12 p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco}
  13 p.p4 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; min-height: 12.0px}
  14 p.p5 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; color: #2c7014}
  15 span.s1 {font: 18.0px Helvetica}
  16 span.s2 {color: #001bb9}
  17 span.s3 {color: #2c7014}
  18 span.s4 {color: #000000}
  19 span.s5 {color: #606060}
  20 span.Apple-tab-span {white-space:pre}
  21 </style>
  22 </head>
  23 <body>
  24 <p class="p1"><span class="s1"><b>Pmulpre<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>multiplies with value of a key in event stream, before it is passed up</b></p>
  25 <p class="p2"><br></p>
  26 <p class="p1"><b>superclass: FilterPattern</b></p>
  27 <p class="p2"><br></p>
  28 <p class="p1"><b>Pset(name, value, pattern)</b></p>
  29 <p class="p2"><br></p>
  30 <p class="p1">multiplies with a value in an event, <b>before it is passed up</b> the stream.</p>
  31 <p class="p1">to multiply with the value after it has been passed down, use <a href="Pmul.html"><span class="s2">Pmul</span></a></p>
  32 <p class="p2"><br></p>
  33 <p class="p2"><br></p>
  34 <p class="p3">(</p>
  35 <p class="p3"><span class="s2">var</span> a, b;</p>
  36 <p class="p3">a = <span class="s2">Pmulpre</span>(<span class="s3">\note</span>, 2, <span class="s2">Pbind</span>(<span class="s3">\note</span>, Pseq([1, 2, 3])));</p>
  37 <p class="p3">x = a.asStream;</p>
  38 <p class="p3">9.do({ x.next(<span class="s2">Event</span>.default).postln; });</p>
  39 <p class="p3">)</p>
  40 <p class="p2"><br></p>
  41 <p class="p1">Pmulpre does not override incoming values:</p>
  42 <p class="p2"><br></p>
  43 <p class="p3">(</p>
  44 <p class="p3"><span class="s2">var</span> a, b;</p>
  45 <p class="p3">a = <span class="s2">Pmulpre</span>(\freq, 801, Pset(\freq, 500, <span class="s2">Pbind</span>(<span class="s3">\dur</span>, 0.2)));</p>
  46 <p class="p3">x = a.asStream;</p>
  47 <p class="p3">9.do({ x.next(<span class="s2">Event</span>.default).postln; });</p>
  48 <p class="p3">)</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">Pmulpre</span>(<span class="s3">\freq</span>, <span class="s2">Pseq</span>([401, 801], 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>.new).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="p3">a = <span class="s2">Pbind</span>(<span class="s3">\dur</span>, 0.5, <span class="s3">\instrument</span>, <span class="s3">\</span><span class="s5">sinegrain</span>);</p>
  74 <p class="p3">b = <span class="s2">Pmulpre</span>(<span class="s3">\freq</span>, <span class="s2">Pseq</span>([1, 2, 3], <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>
  81 </body>
  82 </html>