Help/Control/IEnvGen.htm

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  27 <p class="p1"><span class="s1"><b>IEnvGen</b></span><span class="s2"><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><b>envelope generator for polling values from an InterplEnv</b></p>
  28 <p class="p2"><br></p>
  29 <p class="p3"><b>superclass: UGen</b></p>
  30 <p class="p4"><b></b><br></p>
  31 <p class="p3"><b><span class="Apple-tab-span">  </span>*ar(ienvelope, index, mul, add)</b></p>
  32 <p class="p3"><b><span class="Apple-tab-span">  </span>*kr(ienvelope, index, mul, add)</b></p>
  33 <p class="p4"><br></p>
  34 <p class="p3"><span class="Apple-tab-span">     </span>Plays back break point envelopes from the index point. The envelopes are instances of the InterplEnv <span class="Apple-tab-span">       </span>class. See the <b>InterplEnv</b> help file for more info.<span class="Apple-converted-space"> </span></p>
  35 <p class="p2"><br></p>
  36 <p class="p2"><span class="Apple-tab-span">     </span></p>
  37 <p class="p3"><span class="s2"><span class="Apple-tab-span">    </span></span><b>ienvelope</b> <span class="Apple-tab-span">    </span>an instance of InterplEnv (this is static for the life of the UGen)</p>
  38 <p class="p3"><span class="Apple-tab-span">     </span><b>index<span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></b>a point to access within the InterplEnv</p>
  39 <p class="p4"><br></p>
  40 <p class="p5"><br></p>
  41 <p class="p6">// example</p>
  42 <p class="p5"><br></p>
  43 <p class="p7"><span class="s3">SynthDef</span>(<span class="s4">\test</span>, {<span class="s3">arg</span> gate = 1;</p>
  44 <p class="p7"><span class="Apple-tab-span">     </span><span class="s3">var</span> env, sin;</p>
  45 <p class="p7"><span class="Apple-tab-span">     </span>sin = <span class="s3">SinOsc</span>.ar(440, 0, 1);</p>
  46 <p class="p7"><span class="Apple-tab-span">     </span>env = <span class="s3">InterplEnv</span>([0, 0.6, 0.3, 1.0, 0], [0.1, 0.02, 0.4, 1.1], [<span class="s4">\lin</span>, <span class="s4">\exp</span>, -6, <span class="s4">\sin</span>]).plot;<span class="Apple-tab-span">        </span><span class="s3">Out</span>.ar(0, sin *<span class="Apple-converted-space"> </span></p>
  47 <p class="p6"><span class="s5"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></span>// use MouseX to index into the InterplEnv to control amps</p>
  48 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s3">IEnvGen</span>.kr(env, <span class="s3">MouseX</span>.kr(0, env.times.sum)) *</p>
  49 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s3">EnvGen</span>.kr(<span class="s3">Env</span>.asr(0.01, 1, 0.01), gate, doneAction: 2);</p>
  50 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>)</p>
  51 <p class="p7">}).load(s);</p>
  52 <p class="p5"><br></p>
  53 <p class="p7">s = <span class="s3">Server</span>.internal.boot;</p>
  54 <p class="p7">s.scope;</p>
  55 <p class="p5"><br></p>
  56 <p class="p7">s.sendMsg(<span class="s4">\s_new</span>, <span class="s4">\test</span>, a = s.nextNodeID, 0, 1);</p>
  57 <p class="p7">s.sendMsg(<span class="s4">\n_set</span>, a, <span class="s4">\gate</span>, 0);</p>
  58 <p class="p5"><br></p>
  59 <p class="p6">// index with an SinOsc ... mouse controls amplitude of SinOsc</p>
  60 <p class="p8">SynthDef<span class="s5">(</span><span class="s4">\test</span><span class="s5">, {</span></p>
  61 <p class="p7"><span class="Apple-tab-span">     </span><span class="s3">var</span> env, sin;</p>
  62 <p class="p7"><span class="Apple-tab-span">     </span>sin = <span class="s3">SinOsc</span>.ar(440, 0, <span class="s3">MouseX</span>.kr(0, 1));</p>
  63 <p class="p6"><span class="s5"><span class="Apple-tab-span">    </span></span>// use offset so negative values of SinOsc will map into the InterplEnv</p>
  64 <p class="p7"><span class="Apple-tab-span">     </span>env = <span class="s3">InterplEnv</span>([-1, -0.7, 0.7, 1], [ 0.8666, 0.2666, 0.8668 ], <span class="s4">\lin</span>, -1.0);</p>
  65 <p class="p7"><span class="Apple-tab-span">     </span><span class="s3">Out</span>.ar(0, <span class="s3">IEnvGen</span>.ar(env, sin))<span class="Apple-converted-space"> </span></p>
  66 <p class="p7">}).load(s);</p>
  67 <p class="p5"><br></p>
  68 <p class="p7">s.sendMsg(<span class="s4">\s_new</span>, <span class="s4">\test</span>, a = s.nextNodeID, 0, 1);</p>
  69 <p class="p7">s.sendMsg(<span class="s4">\n_free</span>, a);</p>
  70 <p class="p5"><br></p>
  71 <p class="p5"><br></p>
  72 <p class="p6">// index with Amplitude of input, control freq of SinOsc</p>
  73 <p class="p7"><span class="s3">SynthDef</span>(<span class="s4">\test</span>, {<span class="s3">arg</span> inbus;</p>
  74 <p class="p7"><span class="Apple-tab-span">     </span><span class="s3">var</span> env, point;</p>
  75 <p class="p7"><span class="Apple-tab-span">     </span>point = <span class="s3">Amplitude</span>.ar(<span class="s3">In</span>.ar(inbus), 0.01, 0.2);</p>
  76 <p class="p6"><span class="s5"><span class="Apple-tab-span">    </span></span>// use offset so negative values of SinOsc will map into the InterplEnv</p>
  77 <p class="p7"><span class="Apple-tab-span">     </span>env = <span class="s3">InterplXYC</span>([[0, 330, <span class="s4">\exp</span>], [0.5, 440, <span class="s4">\exp</span>], [1.0, 1760]]);</p>
  78 <p class="p7"><span class="Apple-tab-span">     </span><span class="s3">Out</span>.ar(1, <span class="s3">SinOsc</span>.ar(<span class="s3">IEnvGen</span>.kr(env, point), 0, 0.2))<span class="Apple-converted-space"> </span></p>
  79 <p class="p7">}).load(s);</p>
  80 <p class="p5"><br></p>
  81 <p class="p7">s.sendMsg(<span class="s4">\s_new</span>, <span class="s4">\test</span>, a = s.nextNodeID, 0, 1, <span class="s4">\inbus</span>, s.options.numOutputBusChannels);</p>
  82 <p class="p7">s.sendMsg(<span class="s4">\n_free</span>, a);</p>
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