Help/UGens/Reverbs/GVerb.html

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  26 <p class="p1"><b>GVerb<span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>A two-channel reverb</b></p>
  27 <p class="p2"><br></p>
  28 <p class="p3"><b>#left, right = GVerb.ar(in, roomsize, revtime, damping, inputbw, spread, drylevel, earlyreflevel, taillevel,<span class="Apple-converted-space"> </span></b></p>
  29 <p class="p3"><b><span class="Apple-tab-span">  </span>maxroomsize, mul, add)</b></p>
  30 <p class="p4"><br></p>
  31 <p class="p3">A two-channel reverb UGen, based on the "GVerb" LADSPA effect by Juhana Sadeharju (kouhia at nic.funet.fi).</p>
  32 <p class="p4"><br></p>
  33 <p class="p3"><span class="Apple-tab-span">     </span><b>in -</b> mono input</p>
  34 <p class="p3"><span class="Apple-tab-span">     </span><b>roomsize -</b> in squared meters</p>
  35 <p class="p3"><span class="Apple-tab-span">     </span><b>revtime -</b> in seconds</p>
  36 <p class="p3"><span class="Apple-tab-span">     </span><b>damping -</b> 0 to 1, high frequency rolloff, 0 damps the reverb signal completely, 1 not at all</p>
  37 <p class="p3"><span class="Apple-tab-span">     </span><b>inputbw -</b> 0 to 1, same as damping control, but on the input signal</p>
  38 <p class="p3"><span class="Apple-tab-span">     </span><b>spread -</b> a control on the stereo spread and diffusion of the reverb signal</p>
  39 <p class="p3"><span class="Apple-tab-span">     </span><b>drylevel -</b> amount of dry signal</p>
  40 <p class="p3"><span class="Apple-tab-span">     </span><b>earlyreflevel -</b> amount of early reflection level</p>
  41 <p class="p3"><span class="Apple-tab-span">     </span><b>taillevel -</b> amount of tail level</p>
  42 <p class="p3"><span class="Apple-tab-span">     </span><b>maxroomsize -</b> to set the size of the delay lines. Defaults to roomsize + 1</p>
  43 <p class="p4"><br></p>
  44 <p class="p3"><b>*Known issues*</b></p>
  45 <p class="p4"><br></p>
  46 <p class="p3">There is a large CPU spike when the synth is instantiated while all the delay lines are zeroed out.</p>
  47 <p class="p3">Quick changes in roomsize result in zipper noise.</p>
  48 <p class="p3"><b>Changing the roomsize does not work properly! Still trying to look for the bug... (-josh)</b></p>
  49 <p class="p5"><br></p>
  50 <p class="p5"><br></p>
  51 <p class="p3"><b>Examples</b></p>
  52 <p class="p6"><br></p>
  53 <p class="p7"><span class="s1">SynthDef</span>(<span class="s2">\test</span>, {<span class="s1">arg</span> roomsize, revtime, damping, inputbw, spread = 15, drylevel, earlylevel,</p>
  54 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>taillevel;</p>
  55 <p class="p7"><span class="Apple-tab-span">     </span><span class="s1">var</span> a = <span class="s1">Resonz</span>.ar(</p>
  56 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s1">Array</span>.fill(4, {<span class="s1">Dust</span>.ar(2)}), 1760 * [1, 2, 4, 8], 0.01).sum * 10;</p>
  57 <p class="p8">//<span class="Apple-tab-span">   </span>var a = SoundIn.ar(0);</p>
  58 <p class="p8">//<span class="Apple-tab-span">   </span>var a = PlayBuf.ar(1, 0);</p>
  59 <p class="p7"><span class="Apple-tab-span">     </span><span class="s1">Out</span>.ar(0, <span class="s1">GVerb</span>.ar(</p>
  60 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>a,</p>
  61 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>roomsize,<span class="Apple-converted-space"> </span></p>
  62 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>revtime,<span class="Apple-converted-space"> </span></p>
  63 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>damping,<span class="Apple-converted-space"> </span></p>
  64 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>inputbw,<span class="Apple-converted-space"> </span></p>
  65 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>spread,<span class="Apple-converted-space"> </span></p>
  66 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>drylevel.dbamp,</p>
  67 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>earlylevel.dbamp,<span class="Apple-converted-space"> </span></p>
  68 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>taillevel.dbamp,</p>
  69 <p class="p7"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>roomsize, 0.3) + a)}).load(s)</p>
  70 <p class="p6"><span class="Apple-tab-span">     </span></p>
  71 <p class="p7">s = <span class="s1">Server</span>.internal.boot;</p>
  72 <p class="p7">s.scope(2);</p>
  73 <p class="p6"><br></p>
  74 <p class="p8">// bathroom</p>
  75 <p class="p9"><span class="s3">a = </span><span class="s1">Synth</span><span class="s3">(</span>\test<span class="s3">, [</span>\roomsize<span class="s3">, 5, </span>\revtime<span class="s3">, 0.6, </span>\damping<span class="s3">, 0.62, </span>\inputbw<span class="s3">, 0.48, </span>\drylevel<span class="s3"> -6, </span>\earlylevel<span class="s3">, -11, </span>\taillevel<span class="s3">, -13]);</span></p>
  76 <p class="p7">a.free;</p>
  77 <p class="p6"><br></p>
  78 <p class="p8">//living room</p>
  79 <p class="p9"><span class="s3">a = </span><span class="s1">Synth</span><span class="s3">(</span>\test<span class="s3">, [</span>\roomsize<span class="s3">, 16, </span>\revtime<span class="s3">, 1.24, </span>\damping<span class="s3">, 0.10, </span>\inputbw<span class="s3">, 0.95, </span>\drylevel<span class="s3"> -3, </span>\earlylevel<span class="s3">, -15, </span>\taillevel<span class="s3">, -17]);</span></p>
  80 <p class="p7">a.free;</p>
  81 <p class="p6"><br></p>
  82 <p class="p8">//church</p>
  83 <p class="p9"><span class="s3">a = </span><span class="s1">Synth</span><span class="s3">(</span>\test<span class="s3">, [</span>\roomsize<span class="s3">, 80, </span>\revtime<span class="s3">, 4.85, </span>\damping<span class="s3">, 0.41, </span>\inputbw<span class="s3">, 0.19, </span>\drylevel<span class="s3"> -3, </span>\earlylevel<span class="s3">, -9, </span>\taillevel<span class="s3">, -11]);</span></p>
  84 <p class="p7">a.free;</p>
  85 <p class="p6"><br></p>
  86 <p class="p8">// cathedral</p>
  87 <p class="p9"><span class="s3">a = </span><span class="s1">Synth</span><span class="s3">(</span>\test<span class="s3">, [</span>\roomsize<span class="s3">, 243, </span>\revtime<span class="s3">, 1, </span>\damping<span class="s3">, 0.1, </span>\inputbw<span class="s3">, 0.34, </span>\drylevel<span class="s3"> -3, </span>\earlylevel<span class="s3">, -11, </span>\taillevel<span class="s3">, -9]);</span></p>
  88 <p class="p7">a.free</p>
  89 <p class="p6"><br></p>
  90 <p class="p8">// canyon</p>
  91 <p class="p9"><span class="s3">a = </span><span class="s1">Synth</span><span class="s3">(</span>\test<span class="s3">, [</span>\roomsize<span class="s3">, 300, </span>\revtime<span class="s3">, 103, </span>\damping<span class="s3">, 0.43, </span>\inputbw<span class="s3">, 0.51, </span>\drylevel<span class="s3"> -5, </span>\earlylevel<span class="s3">, -26, </span>\taillevel<span class="s3">, -20]);</span></p>
  92 <p class="p7">a.free;</p>
  93 <p class="p6"><br></p>
  94 <p class="p7">s.quit;</p>
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