Help/UGens/Synth control/Demand Rate/Dbufrd.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 Helvetica}
  11 p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 9.0px Monaco; 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: #ad140d}
  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: #001bb9}
  16 span.s1 {font: 18.0px Helvetica}
  17 span.s2 {font: 9.0px Monaco}
  18 span.s3 {color: #0024f8}
  19 span.s4 {color: #001bb9}
  20 span.s5 {color: #000000}
  21 span.Apple-tab-span {white-space:pre}
  22 </style>
  23 </head>
  24 <body>
  25 <p class="p1"><span class="s1"><b>Dbufrd</b></span><span class="s2"><span class="Apple-tab-span">       </span><span class="Apple-tab-span">    </span></span><b> buffer demand ugen</b></p>
  26 <p class="p2"><br></p>
  27 <p class="p1">superclass: DUGen</p>
  28 <p class="p3"><br></p>
  29 <p class="p3"><br></p>
  30 <p class="p1"><b>*new(bufnum, phase, loop)</b></p>
  31 <p class="p3"><br></p>
  32 <p class="p1">all inputs can be either demand ugen or any other ugen.</p>
  33 <p class="p3"><br></p>
  34 <p class="p1"><b>bufnum</b><span class="Apple-tab-span">        </span>buffer number to read from</p>
  35 <p class="p1"><b>phase</b><span class="Apple-tab-span"> </span>index into the buffer</p>
  36 <p class="p1"><b>loop</b><span class="Apple-tab-span">  </span><span class="Apple-tab-span">    </span>when phase exceeds number of frames in buffer, loops when set to 1 (default :1)</p>
  37 <p class="p3"><br></p>
  38 <p class="p1">see also [<a href="Dbufwr.html"><span class="s3">Dbufwr</span></a>]<span class="Apple-tab-span">  </span></p>
  39 <p class="p2"><br></p>
  40 <p class="p2"><br></p>
  41 <p class="p4">// example</p>
  42 <p class="p2"><br></p>
  43 <p class="p5">b = <span class="s4">Buffer</span>.alloc(s, 24, 1);</p>
  44 <p class="p5">b.setn(0, { exprand(200, 500) } ! b.numFrames);</p>
  45 <p class="p5">b.getn(0, b.numFrames, {<span class="s4">|x|</span> x.postln })</p>
  46 <p class="p2"><br></p>
  47 <p class="p5">(</p>
  48 <p class="p5">{ <span class="s4">var</span> indexPattern;</p>
  49 <p class="p5"><span class="Apple-tab-span">     </span>indexPattern = <span class="s4">Dseq</span>([<span class="s4">Dseq</span>([0, 3, 5, 0, 3, 7, 0, 5, 9], 3), <span class="s4">Dbrown</span>(0, 23, 1, 5)], <span class="s4">inf</span>);</p>
  50 <p class="p6"><span class="s5"><span class="Apple-tab-span">    </span></span>SinOsc<span class="s5">.ar(</span></p>
  51 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s4">Demand</span>.kr(<span class="s4">Dust</span>.kr(10), 0, <span class="s4">Dbufrd</span>(b, indexPattern))</p>
  52 <p class="p5"><span class="Apple-tab-span">     </span>) * 0.1</p>
  53 <p class="p5">}.play;</p>
  54 <p class="p5">)</p>
  55 <p class="p2"><br></p>
  56 <p class="p4">// buffer as a time pattern</p>
  57 <p class="p2"><br></p>
  58 <p class="p5">c = <span class="s4">Buffer</span>.alloc(s, 24, 1);</p>
  59 <p class="p5">c.setn(0, { [1, 0.5, 0.25].choose } ! c.numFrames);</p>
  60 <p class="p5">c.getn(0, c.numFrames, {<span class="s4">|x|</span> x.postln })</p>
  61 <p class="p2"><br></p>
  62 <p class="p5">(</p>
  63 <p class="p5">{ <span class="s4">var</span> indexPattern;</p>
  64 <p class="p5"><span class="Apple-tab-span">     </span>indexPattern = <span class="s4">Dseq</span>([<span class="s4">Dseq</span>([0, 3, 5, 0, 3, 7, 0, 5, 9], 3), <span class="s4">Dbrown</span>(0, 23, 1, 5)], <span class="s4">inf</span>);</p>
  65 <p class="p6"><span class="s5"><span class="Apple-tab-span">    </span></span>SinOsc<span class="s5">.ar(</span></p>
  66 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s4">Duty</span>.kr(</p>
  67 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s4">Dbufrd</span>(c, <span class="s4">Dseries</span>(0, 1, <span class="s4">inf</span>)) * 0.5,<span class="Apple-converted-space"> </span></p>
  68 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0,<span class="Apple-converted-space"> </span></p>
  69 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s4">Dbufrd</span>(b, indexPattern)</p>
  70 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>)</p>
  71 <p class="p5"><span class="Apple-tab-span">     </span>) * 0.1</p>
  72 <p class="p5">}.play;</p>
  73 <p class="p5">)</p>
  74 <p class="p2"><br></p>
  75 <p class="p4">// free buffers</p>
  76 <p class="p2"><br></p>
  77 <p class="p5">b.free; c.free;</p>
  78 <p class="p2"><br></p>
  79 <p class="p2"><br></p>
  80 <p class="p2"><br></p>
  81 </body>
  82 </html>