Help/UGens/FFT/PV_MagDiv.html

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  27 <p class="p1"><b>PV_MagDiv<span class="Apple-tab-span"> </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>division of magnitudes</b></p>
  28 <p class="p2"><br></p>
  29 <p class="p3"><b>PV_MagDiv(bufferA,<span class="Apple-converted-space">  </span>bufferB, <span class="Apple-converted-space">  </span>zeroed)</b></p>
  30 <p class="p2"><br></p>
  31 <p class="p3">Divides magnitudes of two inputs and keeps the phases of the first input.</p>
  32 <p class="p3"><b>bufferA</b> - fft buffer A.</p>
  33 <p class="p3"><b>bufferB</b> - fft buffer B.</p>
  34 <p class="p3"><b>zeroed</b> - number to use when bins are zeroed out, i.e. causing division by zero (defaults to 0.0001)</p>
  35 <p class="p2"><br></p>
  36 <p class="p4"><span class="s1">See also <a href="FFT Overview.html"><span class="s2">FFT Overview</span></a>.</span></p>
  37 <p class="p2"><br></p>
  38 <p class="p5">s.boot;</p>
  39 <p class="p6"><br></p>
  40 <p class="p6"><br></p>
  41 <p class="p5">(</p>
  42 <p class="p7"><span class="s3">SynthDef</span><span class="s1">(</span>"help-magMul"<span class="s1">, { </span><span class="s3">arg</span><span class="s1"> out=0;</span></p>
  43 <p class="p5"><span class="Apple-tab-span">     </span><span class="s3">var</span> inA, chainA, inB, chainB, chain;</p>
  44 <p class="p5"><span class="Apple-tab-span">     </span>inA = <span class="s3">WhiteNoise</span>.ar(0.2);</p>
  45 <p class="p5"><span class="Apple-tab-span">     </span>inB = <span class="s3">LFSaw</span>.ar(100, 0, 0.2);</p>
  46 <p class="p8"><span class="s1"><span class="Apple-tab-span">    </span>chainA = </span>FFT(LocalBuf(2048)<span class="s1">, inA);</span></p>
  47 <p class="p8"><span class="s1"><span class="Apple-tab-span">    </span>chainB = </span>FFT(LocalBuf(2048)<span class="s1">, inB);</span></p>
  48 <p class="p5"><span class="Apple-tab-span">     </span>chain = <span class="s3">PV_MagDiv</span>(chainA, chainB);<span class="Apple-converted-space"> </span></p>
  49 <p class="p5"><span class="Apple-tab-span">     </span><span class="s3">Out</span>.ar(out, 0.5 * <span class="s3">IFFT</span>(chain).dup);</p>
  50 <p class="p5">}).play;</p>
  51 <p class="p5">)</p>
  52 <p class="p6"><br></p>
  53 <p class="p6"><br></p>
  54 <p class="p7"><span class="s1">c = </span><span class="s3">Buffer</span><span class="s1">.read(s,</span>"sounds/a11wlk01.wav"<span class="s1">);</span></p>
  55 <p class="p6"><br></p>
  56 <p class="p5">(</p>
  57 <p class="p5"><span class="s3">SynthDef</span>(<span class="s4">"help-magMul2"</span>, { <span class="s3">arg</span> out=0, soundBufnum=0;</p>
  58 <p class="p5"><span class="Apple-tab-span">     </span><span class="s3">var</span> inA, chainA, inB, chainB, chain;</p>
  59 <p class="p5"><span class="Apple-tab-span">     </span>inA = <span class="s3">LFSaw</span>.ar([100, 150], 0, 0.2);</p>
  60 <p class="p5"><span class="Apple-tab-span">     </span>inB = <span class="s3">PlayBuf</span>.ar(1, soundBufnum, <span class="s3">BufRateScale</span>.kr(soundBufnum), loop: 1);</p>
  61 <p class="p8"><span class="s1"><span class="Apple-tab-span">    </span>chainA = </span>FFT(LocalBuf(2048)<span class="s1">, inA);</span></p>
  62 <p class="p8"><span class="s1"><span class="Apple-tab-span">    </span>chainB = </span>FFT(LocalBuf(2048)<span class="s1">, inB);</span></p>
  63 <p class="p5"><span class="Apple-tab-span">     </span>chain = <span class="s3">PV_MagDiv</span>(chainA, chainB);<span class="Apple-converted-space"> </span></p>
  64 <p class="p5"><span class="Apple-tab-span">     </span><span class="s3">Out</span>.ar(out,<span class="Apple-converted-space">  </span>0.1 * <span class="s3">IFFT</span>(chain));</p>
  65 <p class="p5">}).play(s,[<span class="s5">\out</span>, 0, <span class="s5">\soundBufnum</span>, c]);</p>
  66 <p class="p5">)</p>
  67 <p class="p6"><br></p>
  68 <p class="p5">c.free;</p>
  69 <p class="p6"><br></p>
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