Help/UGens/Filters/Lag2UD.html

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  31 <p class="p1"><span class="s1"><b>Lag2UD<span class="Apple-tab-span">   </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></b></span><b>exponential lag</b></p>
  32 <p class="p2"><br></p>
  33 <p class="p3"><span class="s2"><b>Inherits from: </b><a href="../../Core/Object.html"><b>Object</b></a></span><span class="s3"><b> : </b><a href="../../Core/Kernel/AbstractFunction.html"><span class="s4"><b>AbstractFunction</b></span></a><b> : </b><a href="../UGen.html"><span class="s5"><b>UGen</b></span></a></span><span class="s5"><b> : </b><a href="../Filter.html"><span class="s6"><b>Filter</b></span></a><b> : </b><a href="Lag.html"><span class="s6"><b>Lag</b></span></a></span></p>
  34 <p class="p2"><br></p>
  35 <p class="p2"><br></p>
  36 <p class="p1"><b>Lag2UD.ar(in, lagTimeU, lagTimeD, mul, add))</b></p>
  37 <p class="p1"><b>Lag2UD.kr(in, lagTimeU, lagTimeD, mul, add))</b></p>
  38 <p class="p2"><br></p>
  39 <p class="p1">Lag2 is equivalent to Lag.kr(Lag.kr(in, time), time), thus resulting in a smoother transition. This saves on CPU as you only have to calculate the decay factor once instead of twice. See <b>Lag</b> for more details.</p>
  40 <p class="p1"><br>
  41 See also <a href="Lag2.html"><span class="s7">Lag2</span></a></p>
  42 <p class="p1"><b>in</b> - input signal</p>
  43 <p class="p1"><b>lagTimeU</b> - 60 dB lag time in seconds for the upgoing signal.</p>
  44 <p class="p1"><b>lagTimeD</b> - 60 dB lag time in seconds for the downgoing signal.</p>
  45 <p class="p4"><br></p>
  46 <p class="p5">(</p>
  47 <p class="p6">// used to lag pitch</p>
  48 <p class="p7"><span class="s2"><span class="Apple-converted-space">       </span></span><span class="s8">SynthDef</span><span class="s2">( </span>\lag2ud_help<span class="s2">,</span></p>
  49 <p class="p8"><span class="Apple-converted-space">      </span></p>
  50 <p class="p5"><span class="Apple-tab-span">     </span>{ <span class="s8">arg</span> freq=300,lagup=1, lagdown=5;</p>
  51 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="s8">Out</span>.ar( 0,</p>
  52 <p class="p6"><span class="s2"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span></span><span class="s8">SinOsc</span><span class="s2">.ar( </span>// sine wave</p>
  53 <p class="p6"><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><span class="s8">Lag2UD</span><span class="s2">.kr( </span>// lag the frequency</p>
  54 <p class="p5"><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="Apple-tab-span">    </span>freq,</p>
  55 <p class="p5"><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="Apple-tab-span">    </span>lagup,</p>
  56 <p class="p5"><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="Apple-tab-span">    </span>lagdown</p>
  57 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>),</p>
  58 <p class="p6"><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>0, </span>// phase</p>
  59 <p class="p6"><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>0.2 </span>// sine amplitude</p>
  60 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>)</p>
  61 <p class="p5"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>);</p>
  62 <p class="p5"><span class="Apple-tab-span">     </span>}).send(s);</p>
  63 <p class="p5">)</p>
  64 <p class="p8"><br></p>
  65 <p class="p6"><span class="s2">x = </span><span class="s8">Synth</span><span class="s2">.new( </span><span class="s9">\lag2ud_help</span><span class="s2"> ); </span>// create the synth</p>
  66 <p class="p8"><span class="Apple-converted-space">      </span></p>
  67 <p class="p6"><span class="s2">x.set( </span><span class="s9">\freq</span><span class="s2">, 500 ); </span>// set the frequency to a higher value (takes 1 second)</p>
  68 <p class="p6"><span class="s2">x.set( </span><span class="s9">\freq</span><span class="s2">, 100 ); </span>// set the frequency to a lower value (takes 5 seconds)</p>
  69 <p class="p5">x.free;</p>
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