Help/UGens/Filters/BPZ2.html

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  28 <p class="p1"><span class="s1"><b>BPZ2</b></span><b><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>two zero fixed midpass</b></p>
  29 <p class="p2"><br></p>
  30 <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="LPZ2.html"><span class="s6"><b>LPZ2</b></span></a></span></p>
  31 <p class="p2"><br></p>
  32 <p class="p1"><b>BPZ2.ar(in, mul, add)</b></p>
  33 <p class="p1"><b>BPZ2.kr(in, mul, add)</b></p>
  34 <p class="p2"><br></p>
  35 <p class="p1">A special case fixed filter. Implements the formula:</p>
  36 <p class="p2"><br></p>
  37 <p class="p4">out(i) = 0.5 * (in(i) - in(i-2))</p>
  38 <p class="p2"><br></p>
  39 <p class="p1">This filter cuts out 0 Hz and the Nyquist frequency.</p>
  40 <p class="p1">Compare:</p>
  41 <p class="p2"><br></p>
  42 <p class="p5">{ <span class="s7">WhiteNoise</span>.ar(0.25) }.play;</p>
  43 <p class="p6"><br></p>
  44 <p class="p5">{ <span class="s7">BPZ2</span>.ar(<span class="s7">WhiteNoise</span>.ar(0.25)) }.play;</p>
  45 <p class="p7"><br></p>
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