Help/BinaryOps/greaterorequalthan.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="824.44">
   9 <style type="text/css">
  10 p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Monaco; min-height: 16.0px}
  11 p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px Helvetica}
  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: 12.0px Helvetica}
  14 p.p5 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; min-height: 12.0px}
  15 p.p6 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; color: #000000}
  16 p.p7 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; color: #000000; min-height: 12.0px}
  17 p.p8 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; color: #bf0000}
  18 p.p9 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; color: #606060}
  19 p.p10 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Monaco; color: #000000; min-height: 16.0px}
  20 span.s1 {color: #0000bf}
  21 span.s2 {color: #000000}
  22 span.s3 {color: #007300}
  23 span.s4 {color: #606060}
  24 span.Apple-tab-span {white-space:pre}
  25 </style>
  26 </head>
  27 <body>
  28 <p class="p1"><br></p>
  29 <p class="p2"><b>&gt;=<span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>greater than or equal</b></p>
  30 <p class="p3"><br></p>
  31 <p class="p4"><b>BinaryOperator</b></p>
  32 <p class="p3"><br></p>
  33 <p class="p4"><b>a &gt;= b</b></p>
  34 <p class="p3"><br></p>
  35 <p class="p4">Result is 1 if a &gt;= b, otherwise it is 0. This can be useful for triggering purposes, among other things:</p>
  36 <p class="p5"><br></p>
  37 <p class="p6">s = <span class="s1">Server</span>.local;</p>
  38 <p class="p6">s.boot;</p>
  39 <p class="p7"><br></p>
  40 <p class="p8"><span class="s2">( </span>// trigger an envelope</p>
  41 <p class="p6">{</p>
  42 <p class="p6"><span class="Apple-tab-span">     </span><span class="s1">var</span> trig;</p>
  43 <p class="p6"><span class="Apple-tab-span">     </span>trig = <span class="s1">SinOsc</span>.ar(1) &gt;= 0;</p>
  44 <p class="p6"><span class="Apple-tab-span">     </span><span class="s1">Out</span>.ar(0,</p>
  45 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s1">EnvGen</span>.kr(<span class="s1">Env</span>.perc, trig, doneAction: 0)<span class="Apple-converted-space"> </span></p>
  46 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>* <span class="s1">SinOsc</span>.ar(440,0,0.1)</p>
  47 <p class="p6"><span class="Apple-tab-span">     </span>)</p>
  48 <p class="p6">}.play(s);)</p>
  49 <p class="p7"><br></p>
  50 <p class="p8"><span class="s2">( </span>// trigger a synth</p>
  51 <p class="p9"><span class="s1">SynthDef</span><span class="s2">(</span>"help-EnvGen"<span class="s2">,{ </span><span class="s1">arg</span><span class="s2"> out=0;</span></p>
  52 <p class="p6"><span class="Apple-tab-span">     </span><span class="s1">Out</span>.ar(out,</p>
  53 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s1">EnvGen</span>.kr(<span class="s1">Env</span>.perc,1.0,doneAction: 2)<span class="Apple-converted-space"> </span></p>
  54 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>* <span class="s1">SinOsc</span>.ar(440,0,0.1)</p>
  55 <p class="p6"><span class="Apple-tab-span">     </span>)</p>
  56 <p class="p6">}).send(s);</p>
  57 <p class="p7"><br></p>
  58 <p class="p8">// This synth has no output. It only checks amplitude of input and looks for a transition from &lt; 0.2</p>
  59 <p class="p8">// to &gt; 0.2</p>
  60 <p class="p7"><br></p>
  61 <p class="p9"><span class="s1">SynthDef</span><span class="s2">(</span>"help-&gt;= trig"<span class="s2">, {</span></p>
  62 <p class="p6"><span class="Apple-tab-span">     </span><span class="s1">SendTrig</span>.kr(<span class="s1">Amplitude</span>.kr(<span class="s1">SoundIn</span>.ar(0)) &gt;= 0.2);</p>
  63 <p class="p6">}).play(s);</p>
  64 <p class="p10"><br></p>
  65 <p class="p8">// responder to trigger synth</p>
  66 <p class="p6"><span class="s1">OSCresponderNode</span>(s.addr,<span class="s3">'/tr'</span>,{ <span class="s4">"triggered"</span>.postln; <span class="s1">Synth</span>.new(<span class="s4">"help-EnvGen"</span>) }).add;</p>
  67 <p class="p6">)</p>
  68 </body>
  69 </html>