Help/UGens/Playback and Recording/TGrains.html

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  24 <p class="p1"><b>TGrains<span class="Apple-tab-span">   </span><span class="Apple-tab-span">    </span>buffer granulator</b></p>
  25 <p class="p2"><br></p>
  26 <p class="p3">Triggers generate grains from a single channel (mono) buffer. Each grain has a Hann envelope (sin^2(x) for x from 0 to pi) and is panned between two channels of multiple outputs.</p>
  27 <p class="p4"><br></p>
  28 <p class="p3"><b>TGrains.ar(numChannels, trigger, bufnum, rate, centerPos, dur, pan, amp, interp)</b></p>
  29 <p class="p4"><br></p>
  30 <p class="p3"><span class="Apple-tab-span">     </span><b>numChannels</b> - number of output channels.</p>
  31 <p class="p3"><span class="Apple-tab-span">     </span><b>trigger</b> - at each trigger, the following arguments are sampled and used<span class="Apple-converted-space"> </span></p>
  32 <p class="p3"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>as the arguments of a new grain.<span class="Apple-converted-space"> </span></p>
  33 <p class="p3"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>A trigger occurs when a signal changes from &lt;= 0 to &gt; 0.</p>
  34 <p class="p3"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>If the trigger is audio rate then the grains will start with sample accuracy.</p>
  35 <p class="p3"><span class="Apple-tab-span">     </span><b>bufnum</b> - the index of the buffer to use.<b> It must be a one channel (mono) buffer.</b></p>
  36 <p class="p3"><span class="Apple-tab-span">     </span><b>rate</b> <span class="Apple-converted-space">  </span>-<span class="Apple-converted-space">  </span>1.0 is normal, 2.0 is one octave up, 0.5 is one octave down</p>
  37 <p class="p3"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>-1.0 is backwards normal rate ... etc.</p>
  38 <p class="p3"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>Unlike PlayBuf, the rate is multiplied by BufRate, so you needn't do that yourself.</p>
  39 <p class="p3"><span class="Apple-tab-span">     </span><b>centerPos</b> - the position in the buffer in seconds at which the grain envelope will reach<span class="Apple-converted-space"> </span></p>
  40 <p class="p3"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>maximum amplitude.</p>
  41 <p class="p3"><span class="Apple-tab-span">     </span><b>dur</b><span class="Apple-converted-space">    </span>- <span class="Apple-converted-space">  </span>duration of the grain in seconds.</p>
  42 <p class="p3"><span class="Apple-tab-span">     </span><b>pan</b><span class="Apple-converted-space">    </span>- <span class="Apple-converted-space">  </span>a value from -1 to 1. Determines where to pan the output in the same manner as PanAz.</p>
  43 <p class="p3"><span class="Apple-tab-span">     </span><b>amp</b> <span class="Apple-converted-space">  </span>- amplitude of the grain.</p>
  44 <p class="p3"><span class="Apple-tab-span">     </span><b>interp</b> - 1,2,or 4. Determines whether the grain uses (1) no interpolation, (2) linear interpolation,<span class="Apple-converted-space"> </span></p>
  45 <p class="p3"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>or (4) cubic interpolation.</p>
  46 <p class="p2"><br></p>
  47 <p class="p2"><br></p>
  48 <p class="p5">(</p>
  49 <p class="p5">s = <span class="s1">Server</span>.internal;</p>
  50 <p class="p5"><span class="s1">Server</span>.default = s;</p>
  51 <p class="p5">s.boot;</p>
  52 <p class="p5">)</p>
  53 <p class="p2"><br></p>
  54 <p class="p2"><br></p>
  55 <p class="p6"><span class="s2">s.sendMsg(</span><span class="s3">\b_allocRead</span><span class="s2">, 10, </span>"sounds/a11wlk01.wav"<span class="s2">);</span></p>
  56 <p class="p2"><br></p>
  57 <p class="p2"><br></p>
  58 <p class="p5">(</p>
  59 <p class="p5">{</p>
  60 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">var</span> b = 10, trate, dur, rate;</p>
  61 <p class="p5"><span class="Apple-tab-span">     </span>trate = <span class="s1">MouseY</span>.kr(2,200,1);</p>
  62 <p class="p5"><span class="Apple-tab-span">     </span>dur = 4 / trate;</p>
  63 <p class="p5"><span class="Apple-tab-span">     </span>rate = Dseq([10, 1, 1, 0.5, 0.5, 0.2, 0.1], inf);</p>
  64 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">TGrains</span>.ar(2, <span class="s1">Impulse</span>.ar(trate), b, <span class="s1">rate</span>, <span class="s1">MouseX</span>.kr(0,<span class="s1">BufDur</span>.kr(b)), dur, Dseq([-1, 1], inf), 0.1, 2);</p>
  65 <p class="p5">}.scope(zoom: 4);</p>
  66 <p class="p5">)</p>
  67 <p class="p2"><br></p>
  68 <p class="p5">(</p>
  69 <p class="p5">{</p>
  70 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">var</span> b = 10, trate, dur, clk, pos, pan;</p>
  71 <p class="p5"><span class="Apple-tab-span">     </span>trate = <span class="s1">MouseY</span>.kr(8,120,1);</p>
  72 <p class="p5"><span class="Apple-tab-span">     </span>dur = 12 / trate;</p>
  73 <p class="p5"><span class="Apple-tab-span">     </span>clk = <span class="s1">Impulse</span>.kr(trate);</p>
  74 <p class="p5"><span class="Apple-tab-span">     </span>pos = <span class="s1">MouseX</span>.kr(0,<span class="s1">BufDur</span>.kr(b)) + <span class="s1">TRand</span>.kr(0, 0.01, clk);</p>
  75 <p class="p5"><span class="Apple-tab-span">     </span>pan = <span class="s1">WhiteNoise</span>.kr(0.6);</p>
  76 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">TGrains</span>.ar(2, clk, b, <span class="s1">1</span>, pos, dur, pan, 0.1);</p>
  77 <p class="p5">}.scope(zoom: 4);</p>
  78 <p class="p5">)</p>
  79 <p class="p2"><br></p>
  80 <p class="p7">// 4 channels</p>
  81 <p class="p5">(</p>
  82 <p class="p5">{</p>
  83 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">var</span> b = 10, trate, dur, clk, pos, pan;</p>
  84 <p class="p5"><span class="Apple-tab-span">     </span>trate = <span class="s1">MouseY</span>.kr(8,120,1);</p>
  85 <p class="p5"><span class="Apple-tab-span">     </span>dur = 12 / trate;</p>
  86 <p class="p5"><span class="Apple-tab-span">     </span>clk = <span class="s1">Impulse</span>.kr(trate);</p>
  87 <p class="p5"><span class="Apple-tab-span">     </span>pos = <span class="s1">MouseX</span>.kr(0,<span class="s1">BufDur</span>.kr(b)) + <span class="s1">TRand</span>.kr(0, 0.01, clk);</p>
  88 <p class="p5"><span class="Apple-tab-span">     </span>pan = <span class="s1">WhiteNoise</span>.kr(0.6);</p>
  89 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">TGrains</span>.ar(4, clk, b, <span class="s1">1</span>, pos, dur, pan, 0.1);</p>
  90 <p class="p5">}.scope(4, zoom: 4);</p>
  91 <p class="p5">)</p>
  92 <p class="p2"><br></p>
  93 <p class="p5">(</p>
  94 <p class="p5">{</p>
  95 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">var</span> b = 10, trate, dur, clk, pos, pan;</p>
  96 <p class="p5"><span class="Apple-tab-span">     </span>trate = <span class="s1">MouseY</span>.kr(8,120,1);</p>
  97 <p class="p5"><span class="Apple-tab-span">     </span>dur = 4 / trate;</p>
  98 <p class="p5"><span class="Apple-tab-span">     </span>clk = <span class="s1">Dust</span>.kr(trate);</p>
  99 <p class="p5"><span class="Apple-tab-span">     </span>pos = <span class="s1">MouseX</span>.kr(0,<span class="s1">BufDur</span>.kr(b)) + <span class="s1">TRand</span>.kr(0, 0.01, clk);</p>
 100 <p class="p5"><span class="Apple-tab-span">     </span>pan = <span class="s1">WhiteNoise</span>.kr(0.6);</p>
 101 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">TGrains</span>.ar(2, clk, b, <span class="s1">1</span>, pos, dur, pan, 0.1);</p>
 102 <p class="p5">}.scope(zoom: 4);</p>
 103 <p class="p5">)</p>
 104 <p class="p2"><br></p>
 105 <p class="p2"><br></p>
 106 <p class="p2"><br></p>
 107 <p class="p5">(</p>
 108 <p class="p5">{</p>
 109 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">var</span> b = 10, trate, dur, clk, pos, pan;</p>
 110 <p class="p5"><span class="Apple-tab-span">     </span>trate = <span class="s1">LinExp</span>.kr(<span class="s1">LFTri</span>.kr(<span class="s1">MouseY</span>.kr(0.1,2,1)),-1,1,8,120);</p>
 111 <p class="p5"><span class="Apple-tab-span">     </span>dur = 12 / trate;</p>
 112 <p class="p5"><span class="Apple-tab-span">     </span>clk = <span class="s1">Impulse</span>.ar(trate);</p>
 113 <p class="p5"><span class="Apple-tab-span">     </span>pos = <span class="s1">MouseX</span>.kr(0,<span class="s1">BufDur</span>.kr(b));</p>
 114 <p class="p5"><span class="Apple-tab-span">     </span>pan = <span class="s1">WhiteNoise</span>.kr(0.6);</p>
 115 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">TGrains</span>.ar(2, clk, b, <span class="s1">1</span>, pos, dur, pan, 0.1);</p>
 116 <p class="p5">}.scope(zoom: 4);</p>
 117 <p class="p5">)</p>
 118 <p class="p2"><br></p>
 119 <p class="p2"><br></p>
 120 <p class="p5">(</p>
 121 <p class="p5">{</p>
 122 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">var</span> b = 10, trate, dur, clk, pos, pan;</p>
 123 <p class="p5"><span class="Apple-tab-span">     </span>trate = 12;</p>
 124 <p class="p5"><span class="Apple-tab-span">     </span>dur = <span class="s1">MouseY</span>.kr(0.2,24,1) / trate;</p>
 125 <p class="p5"><span class="Apple-tab-span">     </span>clk = <span class="s1">Impulse</span>.kr(trate);</p>
 126 <p class="p5"><span class="Apple-tab-span">     </span>pos = <span class="s1">MouseX</span>.kr(0,<span class="s1">BufDur</span>.kr(b)) + <span class="s1">TRand</span>.kr(0, 0.01, clk);</p>
 127 <p class="p5"><span class="Apple-tab-span">     </span>pan = <span class="s1">WhiteNoise</span>.kr(0.6);</p>
 128 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">TGrains</span>.ar(2, clk, b, <span class="s1">1</span>, pos, dur, pan, 0.1);</p>
 129 <p class="p5">}.scope(zoom: 4);</p>
 130 <p class="p5">)</p>
 131 <p class="p2"><br></p>
 132 <p class="p5">(</p>
 133 <p class="p5">{</p>
 134 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">var</span> b = 10, trate, dur, clk, pos, pan;</p>
 135 <p class="p5"><span class="Apple-tab-span">     </span>trate = 100;</p>
 136 <p class="p5"><span class="Apple-tab-span">     </span>dur = 8 / trate;</p>
 137 <p class="p5"><span class="Apple-tab-span">     </span>clk = <span class="s1">Impulse</span>.kr(trate);</p>
 138 <p class="p5"><span class="Apple-tab-span">     </span>pos = <span class="s1">Integrator</span>.kr(<span class="s1">BrownNoise</span>.kr(0.001));</p>
 139 <p class="p5"><span class="Apple-tab-span">     </span>pan = <span class="s1">WhiteNoise</span>.kr(0.6);</p>
 140 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">TGrains</span>.ar(2, clk, b, <span class="s1">1</span>, pos, dur, pan, 0.1);</p>
 141 <p class="p5">}.scope(zoom: 4);</p>
 142 <p class="p5">)</p>
 143 <p class="p2"><br></p>
 144 <p class="p5">(</p>
 145 <p class="p5">{</p>
 146 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">var</span> b = 10, trate, dur, clk, pos, pan;</p>
 147 <p class="p5"><span class="Apple-tab-span">     </span>trate = <span class="s1">MouseY</span>.kr(1,400,1);</p>
 148 <p class="p5"><span class="Apple-tab-span">     </span>dur = 8 / trate;</p>
 149 <p class="p5"><span class="Apple-tab-span">     </span>clk = <span class="s1">Impulse</span>.kr(trate);</p>
 150 <p class="p5"><span class="Apple-tab-span">     </span>pos = <span class="s1">MouseX</span>.kr(0,<span class="s1">BufDur</span>.kr(b));</p>
 151 <p class="p5"><span class="Apple-tab-span">     </span>pan = <span class="s1">WhiteNoise</span>.kr(0.8);</p>
 152 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">TGrains</span>.ar(2, clk, b, 2 ** <span class="s1">WhiteNoise</span>.kr(2), pos, dur, pan, 0.1);</p>
 153 <p class="p5">}.scope(zoom: 4);</p>
 154 <p class="p5">)</p>
 155 <p class="p2"><br></p>
 156 <p class="p2"><br></p>
 157 <p class="p2"><br></p>
 158 <p class="p2"><br></p>
 159 <p class="p5">(</p>
 160 <p class="p5">{</p>
 161 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">var</span> b = 10, trate, dur;</p>
 162 <p class="p5"><span class="Apple-tab-span">     </span>trate = <span class="s1">MouseY</span>.kr(2,120,1);</p>
 163 <p class="p5"><span class="Apple-tab-span">     </span>dur = 1.2 / trate;</p>
 164 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">TGrains</span>.ar(2, <span class="s1">Impulse</span>.ar(trate), b, (1.2 ** <span class="s1">WhiteNoise</span>.kr(3).round(1)), <span class="s1">MouseX</span>.kr(0,<span class="s1">BufDur</span>.kr(b)), dur, <span class="s1">WhiteNoise</span>.kr(0.6), 0.1);</p>
 165 <p class="p5">}.scope(zoom: 4);</p>
 166 <p class="p5">)</p>
 167 <p class="p2"><br></p>
 168 <p class="p2"><br></p>
 169 <p class="p2"><br></p>
 170 <p class="p2"><br></p>
 171 <p class="p7">// demand ugens as inputs</p>
 172 <p class="p5">(</p>
 173 <p class="p5">{</p>
 174 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">var</span> trate, dur, z, d;</p>
 175 <p class="p5"><span class="Apple-tab-span">     </span>trate = <span class="s1">MouseX</span>.kr(1, 100, 1);</p>
 176 <p class="p5"><span class="Apple-tab-span">     </span>d = { <span class="s1">Dwhite</span>(0.1, 0.2, 1) };</p>
 177 <p class="p5"><span class="Apple-tab-span">     </span>z = {<span class="Apple-converted-space"> </span></p>
 178 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s1">Drand</span>([<span class="s1">Dgeom</span>(0.1, 1 + d.value, <span class="s1">Diwhite</span>(20, 40)), <span class="s1">Dgeom</span>(1, 1 - d.value, <span class="s1">Diwhite</span>(20, 40))])<span class="Apple-converted-space"> </span></p>
 179 <p class="p5"><span class="Apple-tab-span">     </span>};</p>
 180 <p class="p5"><span class="Apple-tab-span">     </span><span class="s1">TGrains</span>.ar(2,<span class="Apple-converted-space"> </span></p>
 181 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s1">Impulse</span>.ar(trate),</p>
 182 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>bufnum: 10,<span class="Apple-converted-space"> </span></p>
 183 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>rate: <span class="s1">Dseq</span>([1, 1, z.value, 0.5, 0.5, 0.2, 0.1, 0.1, 0.1, 0.1], <span class="s1">inf</span>) * 2 + 1,<span class="Apple-converted-space"> </span></p>
 184 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>centerPos: <span class="s1">Dseq</span>(z.dup(8), <span class="s1">inf</span>),</p>
 185 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>dur: <span class="s1">Dseq</span>([1, d.value, 1, z.value, 0.5, 0.5, 0.1, z.value] * 2, <span class="s1">inf</span>) / trate,</p>
 186 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>pan: <span class="s1">Dseq</span>([1, 1, 1, 0.5, 0.2, 0.1, 0, 0, 0], <span class="s1">inf</span>) * 2 - 1,</p>
 187 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>amp: <span class="s1">Dseq</span>([1, 0, z.value, 0, 2, 1.0, 1, 0.1, 0.1], <span class="s1">inf</span>)</p>
 188 <p class="p5"><span class="Apple-tab-span">     </span>);</p>
 189 <p class="p5">}.scope(zoom: 4);</p>
 190 <p class="p5">)</p>
 191 </body>
 192 </html>