Help/UGens/Synth control/IndexL.html

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  26 <p class="p1"><span class="s1"><b>IndexL<span class="Apple-tab-span">   </span><span class="Apple-tab-span">    </span></b></span><b>index into a table with a signal, linear interpolated</b></p>
  27 <p class="p2"><br></p>
  28 <p class="p1"><b>IndexL.ar(bufnum, in, mul, add)</b></p>
  29 <p class="p1"><b>IndexL.kr(bufnum, in, mul, add)</b></p>
  30 <p class="p2"><br></p>
  31 <p class="p1">The input signal value is truncated to an integer value and used as an index into the table.</p>
  32 <p class="p1">Out of range index values are clipped to the valid range.</p>
  33 <p class="p2"><br></p>
  34 <p class="p1"><b>bufnum</b> - index of the buffer</p>
  35 <p class="p1"><b>in</b> - the input signal.</p>
  36 <p class="p2"><br></p>
  37 <p class="p3"><span class="s2">See also: <a href="IndexInBetween.html">IndexInBetween</a></span></p>
  38 <p class="p4"><br></p>
  39 <p class="p5">// indexing into a fixed table</p>
  40 <p class="p6">(</p>
  41 <p class="p6">{</p>
  42 <p class="p7"><span class="s2"><span class="Apple-tab-span">    </span>SinOsc.ar(</span></p>
  43 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s3">IndexL</span>.kr(<span class="Apple-tab-span">  </span></p>
  44 <p class="p6"><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 class="s3">LocalBuf</span>.newFrom([ 200, 300, 400, 500, 600, 800 ].scramble),</p>
  45 <p class="p6"><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 class="s3">LFSaw</span>.kr(2.0).range(0, 7)</p>
  46 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>),</p>
  47 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0,</p>
  48 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0.5</p>
  49 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>)</p>
  50 <p class="p6">}.play;</p>
  51 <p class="p6">)</p>
  52 <p class="p4"><br></p>
  53 <p class="p5">// with mouse control</p>
  54 <p class="p6">(</p>
  55 <p class="p6">{</p>
  56 <p class="p7"><span class="s2"><span class="Apple-tab-span">    </span>SinOsc.ar(</span></p>
  57 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s3">IndexL</span>.kr(<span class="Apple-tab-span">  </span></p>
  58 <p class="p6"><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 class="s3">LocalBuf</span>.newFrom([ 200, 300, 400, 500, 600, 800 ].scramble),</p>
  59 <p class="p6"><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 class="s3">MouseX</span>.kr(0, 7)</p>
  60 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>),</p>
  61 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0,</p>
  62 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0.5</p>
  63 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>)</p>
  64 <p class="p6">}.play;</p>
  65 <p class="p6">)</p>
  66 <p class="p8"><br></p>
  67 <p class="p6">(</p>
  68 <p class="p5">// indexing into a changeable table</p>
  69 <p class="p6">s = <span class="s3">Server</span>.local;</p>
  70 <p class="p6">t = [ 200, 300, 400, 500, 600, 800 ];</p>
  71 <p class="p6">b = <span class="s3">Buffer</span>(s, t.size, 1);</p>
  72 <p class="p4"><br></p>
  73 <p class="p5">// alloc and set the values</p>
  74 <p class="p6">s.listSendMsg( b.allocMsg( b.setnMsg(0, t) ).postln );</p>
  75 <p class="p4"><br></p>
  76 <p class="p6"><span class="s3">SynthDef</span>(<span class="s4">\help_index</span>, { <span class="s3">arg</span> out = 0, i_bufnum = 0;<span class="Apple-converted-space"> </span></p>
  77 <p class="p6"><span class="Apple-tab-span">     </span><span class="s3">Out</span>.ar(0,</p>
  78 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s3">SinOsc</span>.ar(</p>
  79 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s3">IndexL</span>.kr(<span class="Apple-tab-span">  </span></p>
  80 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>i_bufnum,</p>
  81 <p class="p6"><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 class="s3">LFSaw</span>.kr(2).range(0, 7)</p>
  82 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>),</p>
  83 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0,</p>
  84 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0.5</p>
  85 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>)<span class="Apple-converted-space"> </span></p>
  86 <p class="p6"><span class="Apple-tab-span">     </span>)</p>
  87 <p class="p6">}).play(s, [<span class="s4">\i_bufnum</span>, b]);</p>
  88 <p class="p6">)</p>
  89 <p class="p4"><br></p>
  90 <p class="p6">b.setn(*[ 200, 300, 400, 500, 600, 800 ].scramble.postln - 30);</p>
  91 <p class="p4"><br></p>
  92 <p class="p4"><br></p>
  93 <p class="p6">(</p>
  94 <p class="p6"><span class="s3">SynthDef</span>(<span class="s4">\help_index</span>, { <span class="s3">arg</span> out=0,i_bufnum=0;<span class="Apple-converted-space"> </span></p>
  95 <p class="p6"><span class="Apple-tab-span">     </span><span class="s3">Out</span>.ar(0,</p>
  96 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s3">SinOsc</span>.ar(</p>
  97 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="s3">IndexL</span>.kr(<span class="Apple-tab-span">  </span></p>
  98 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>i_bufnum,</p>
  99 <p class="p6"><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 class="s3">MouseX</span>.kr(0, <span class="s3">BufFrames</span>.ir(i_bufnum))</p>
 100 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>),</p>
 101 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0,</p>
 102 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0.5</p>
 103 <p class="p6"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>)<span class="Apple-converted-space"> </span></p>
 104 <p class="p6"><span class="Apple-tab-span">     </span>)</p>
 105 <p class="p6">}).play(s, [<span class="s4">\i_bufnum</span>, b]);</p>
 106 <p class="p6">)</p>
 107 <p class="p4"><br></p>
 108 <p class="p6">b.free;</p>
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