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

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  24 <p class="p1"><span class="s1"><b>Pbus</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><b>isolate a pattern by restricting it to a bus</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="p2"><br></p>
  29 <p class="p2"><br></p>
  30 <p class="p1"><b>Pbus(pattern, dur, fadeTime)</b></p>
  31 <p class="p2"><br></p>
  32 <p class="p1">Starts a new group and plays the pattern in this group, on a private bus.<span class="Apple-converted-space"> </span></p>
  33 <p class="p1">The group and the bus is released when the stream has ended.</p>
  34 <p class="p2"><br></p>
  35 <p class="p1">This is useful in order to isolate a Pfx.</p>
  36 <p class="p2"><br></p>
  37 <p class="p1"><b>dur</b> <span class="Apple-tab-span">  </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>delay to allow inner patterns to decay.<span class="Apple-converted-space"> </span></p>
  38 <p class="p1"><b>fadeTime</b><span class="Apple-tab-span">      </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>fading out the inner pattern after dur over this time</p>
  39 <p class="p1"><b>numChannels</b><span class="Apple-tab-span">   </span><span class="Apple-tab-span">    </span>number of channels of the bus (should match the synthdef) <b>default: 2</b></p>
  40 <p class="p1"><b>rate</b><span class="Apple-tab-span">  </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>bus rate (default: 'audio')</p>
  41 <p class="p2"><br></p>
  42 <p class="p2"><br></p>
  43 <p class="p2"><br></p>
  44 <p class="p2"><br></p>
  45 <p class="p1">Example:</p>
  46 <p class="p2"><br></p>
  47 <p class="p3"><br></p>
  48 <p class="p4">(</p>
  49 <p class="p4"><span class="s2">SynthDef</span>(<span class="s3">\echo</span>, { <span class="s2">arg</span> out=0, maxdtime=0.2, dtime=0.2, decay=2, gate=1;</p>
  50 <p class="p4"><span class="Apple-tab-span">     </span><span class="s2">var</span> env, in;</p>
  51 <p class="p4"><span class="Apple-tab-span">     </span>env = <span class="s2">Linen</span>.kr(gate, 0.05, 1, 0.1, 2);</p>
  52 <p class="p4"><span class="Apple-tab-span">     </span>in = <span class="s2">In</span>.ar(out, 2);</p>
  53 <p class="p4"><span class="Apple-tab-span">     </span><span class="s2">XOut</span>.ar(out, env, <span class="s2">CombL</span>.ar(in * env, maxdtime, dtime, decay, 1, in));</p>
  54 <p class="p4">}, [<span class="s3">\ir</span>, <span class="s3">\ir</span>, 0.1, 0.1, 0]).add;</p>
  55 <p class="p3"><br></p>
  56 <p class="p4"><span class="s2">SynthDef</span>(<span class="s3">\distort</span>, { <span class="s2">arg</span> out=0, pregain=40, amp=0.2, gate=1;</p>
  57 <p class="p4"><span class="Apple-tab-span">     </span><span class="s2">var</span> env;</p>
  58 <p class="p4"><span class="Apple-tab-span">     </span>env = <span class="s2">Linen</span>.kr(gate, 0.05, 1, 0.1, 2);</p>
  59 <p class="p4"><span class="Apple-tab-span">     </span><span class="s2">XOut</span>.ar(out, env, (<span class="s2">In</span>.ar(out, 2) * pregain).distort * amp);</p>
  60 <p class="p4">}, [<span class="s3">\ir</span>, 0.1, 0.1, 0]).add;</p>
  61 <p class="p3"><br></p>
  62 <p class="p4"><span class="s2">SynthDef</span>(<span class="s3">\wah</span>, { <span class="s2">arg</span> out=0, gate=1;</p>
  63 <p class="p4"><span class="Apple-tab-span">     </span><span class="s2">var</span> env, in;</p>
  64 <p class="p4"><span class="Apple-tab-span">     </span>env = <span class="s2">Linen</span>.kr(gate, 0.05, 1, 0.4, 2);</p>
  65 <p class="p4"><span class="Apple-tab-span">     </span>in = <span class="s2">In</span>.ar(out, 2);</p>
  66 <p class="p4"><span class="Apple-tab-span">     </span><span class="s2">XOut</span>.ar(out, env, <span class="s2">RLPF</span>.ar(in, <span class="s2">LinExp</span>.kr(<span class="s2">LFNoise1</span>.kr(0.3), -1, 1, 200, 8000), 0.1).softclip * 0.8);</p>
  67 <p class="p4">}, [<span class="s3">\ir</span>, 0]).add;</p>
  68 <p class="p4">)</p>
  69 <p class="p3"><br></p>
  70 <p class="p4">(</p>
  71 <p class="p4"><span class="s2">var</span> p, q, r, o;</p>
  72 <p class="p4">p = <span class="s2">Pbind</span>(<span class="s3">\degree</span>, <span class="s2">Prand</span>((0..7),12), <span class="s3">\dur</span>, 0.3, <span class="s3">\legato</span>, 0.2);</p>
  73 <p class="p3"><br></p>
  74 <p class="p4">q = <span class="s2">Pfx</span>(p, <span class="s3">\echo</span>, <span class="s3">\dtime</span>, 0.2, <span class="s3">\decay</span>, 3);</p>
  75 <p class="p3"><br></p>
  76 <p class="p4">r = <span class="s2">Pfx</span>(q, <span class="s3">\distort</span>, <span class="s3">\pregain</span>, 20, <span class="s3">\amp</span>, 0.25);</p>
  77 <p class="p3"><br></p>
  78 <p class="p4">o = <span class="s2">Pfx</span>(r, <span class="s3">\wah</span>);</p>
  79 <p class="p3"><br></p>
  80 <p class="p5">Ppar<span class="s4">(</span></p>
  81 <p class="p6"><span class="s4"><span class="Apple-tab-span">    </span>[p, q, r, o].collect(</span><span class="s2">Pbus</span><span class="s4">(</span><span class="s2">_</span><span class="s4">)); </span>// play each in a different bus.</p>
  82 <p class="p4">).play;</p>
  83 <p class="p4">)<span class="Apple-tab-span">    </span></p>
  84 <p class="p2"><br></p>
  85 <p class="p2"><br></p>
  86 <p class="p2"><br></p>
  87 <p class="p6">// compare to playing them together on one bus.</p>
  88 <p class="p4">(</p>
  89 <p class="p4"><span class="s2">var</span> p, q, r, o;</p>
  90 <p class="p4">p = <span class="s2">Pbind</span>(<span class="s3">\degree</span>, <span class="s2">Prand</span>((0..7),12), <span class="s3">\dur</span>, 0.3, <span class="s3">\legato</span>, 0.2);</p>
  91 <p class="p3"><br></p>
  92 <p class="p4">q = <span class="s2">Pfx</span>(p, <span class="s3">\echo</span>, <span class="s3">\dtime</span>, 0.2, <span class="s3">\decay</span>, 3);</p>
  93 <p class="p3"><br></p>
  94 <p class="p4">r = <span class="s2">Pfx</span>(q, <span class="s3">\distort</span>, <span class="s3">\pregain</span>, 20, <span class="s3">\amp</span>, 0.25);</p>
  95 <p class="p3"><br></p>
  96 <p class="p4">o = <span class="s2">Pfx</span>(r, <span class="s3">\wah</span>);</p>
  97 <p class="p3"><br></p>
  98 <p class="p4"><span class="s2">Ppar</span>([p, q, r, o]).play;</p>
  99 <p class="p4">)</p>
 100 <p class="p3"><br></p>
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