Help/UGens/FFT/PV_Add.html

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  29 <p class="p1"><span class="s1"><b>PV_Add<span class="Apple-tab-span">   </span><span class="Apple-tab-span">    </span></b></span><b>complex addition</b></p>
  30 <p class="p2"><br></p>
  31 <p class="p3"><b>PV_Add(bufferA,<span class="Apple-converted-space">  </span>bufferB)</b></p>
  32 <p class="p2"><br></p>
  33 <p class="p3">Complex Addition: RealA + RealB, ImagA + ImagB</p>
  34 <p class="p3"><b>bufferA</b> - fft buffer A.</p>
  35 <p class="p3"><b>bufferB</b> - fft buffer B.</p>
  36 <p class="p4"><span class="s2">See also <a href="FFT Overview.html"><span class="s3">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="p7"><span class="s2">d = </span><span class="s4">Buffer</span><span class="s2">.read(s,</span>"sounds/a11wlk01.wav"<span class="s2">);</span></p>
  41 <p class="p6"><br></p>
  42 <p class="p6"><br></p>
  43 <p class="p5">(</p>
  44 <p class="p8"><span class="s5">SynthDef</span>(<span class="s6">"help-add"</span>, { <span class="s5">arg</span> out=0, soundBufnum;</p>
  45 <p class="p8"><span class="Apple-tab-span">     </span><span class="s5">var</span> inA, chainA, inB, chainB, chain ;</p>
  46 <p class="p8"><span class="Apple-tab-span">     </span>inA = <span class="s5">PlayBuf</span>.ar(1, <span class="s2">soundBufnum</span>, <span class="s5">BufRateScale</span>.kr(soundBufnum), loop: 1);</p>
  47 <p class="p8"><span class="Apple-tab-span">     </span>inB =<span class="Apple-converted-space">  </span><span class="s5">PlayBuf</span>.ar(1, <span class="s2">soundBufnum</span>, <span class="s5">BufRateScale</span>.kr(soundBufnum) * 0.5, loop: 1);</p>
  48 <p class="p8"><span class="Apple-tab-span">     </span>chainA = <span class="s5">FFT</span>(<span class="s5">LocalBuf</span>(2048), inA);</p>
  49 <p class="p8"><span class="Apple-tab-span">     </span>chainB = <span class="s5">FFT</span>(<span class="s5">LocalBuf</span>(2048), inB);</p>
  50 <p class="p8"><span class="Apple-tab-span">     </span>chain = <span class="s5">PV_Add</span>(chainA, chainB);<span class="Apple-converted-space"> </span></p>
  51 <p class="p8"><span class="Apple-tab-span">     </span><span class="s5">Out</span>.ar(out,<span class="Apple-converted-space">  </span>0.1 * <span class="s5">IFFT</span>(chain).dup);</p>
  52 <p class="p8">}).play(s, [<span class="s7">\soundBufnum</span>, d]);</p>
  53 <p class="p5">)</p>
  54 <p class="p6"><br></p>
  55 <p class="p5">d.free;</p>
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