Help/BinaryOps/exponentiation.html

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  27 <p class="p1"><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>exponentiation</b></p>
  28 <p class="p2"><br></p>
  29 <p class="p3"><b>BinaryOperator</b></p>
  30 <p class="p2"><br></p>
  31 <p class="p3"><b>a ** b</b></p>
  32 <p class="p2"><br></p>
  33 <p class="p3">When the signal is negative this function extends the usual definition of</p>
  34 <p class="p3">exponentiation and returns neg(neg(a) ** b). This allows exponentiation of</p>
  35 <p class="p3">negative signal values by noninteger exponents.</p>
  36 <p class="p2"><br></p>
  37 <p class="p3">redirects to <b>pow(a, b)</b></p>
  38 <p class="p2"><br></p>
  39 <p class="p4">(</p>
  40 <p class="p4">{</p>
  41 <p class="p4"><span class="s1">var</span> a;</p>
  42 <p class="p4">a = <span class="s1">FSinOsc</span>.ar(100);</p>
  43 <p class="p4">[a, a ** 10]</p>
  44 <p class="p4">}.play</p>
  45 <p class="p4">)</p>
  46 <p class="p5"><br></p>
  47 <p class="p5"><br></p>
  48 <p class="p6">// using exponentiation for compression or expansion</p>
  49 <p class="p7"><span class="s2">s.sendMsg(</span>"/b_allocRead"<span class="s2">, 0, </span>"sounds/a11wlk01.wav"<span class="s2">); </span><span class="s3">// load a soundfile</span></p>
  50 <p class="p8"><br></p>
  51 <p class="p6">// compression</p>
  52 <p class="p4">(</p>
  53 <p class="p4">{</p>
  54 <p class="p4"><span class="s1">var</span> in = <span class="s1">PlayBuf</span>.ar(1, 0, 1, loop: 1);</p>
  55 <p class="p4">in ** 0.7<span class="Apple-converted-space"> </span></p>
  56 <p class="p4">}.play;</p>
  57 <p class="p4">)</p>
  58 <p class="p8"><br></p>
  59 <p class="p6">// expansion</p>
  60 <p class="p4">(</p>
  61 <p class="p4">{</p>
  62 <p class="p4"><span class="s1">var</span> in = <span class="s1">PlayBuf</span>.ar(1, 0, 1, loop: 1);</p>
  63 <p class="p4">in ** 2</p>
  64 <p class="p4">}.play;</p>
  65 <p class="p4">)</p>
  66 <p class="p9"><br></p>
  67 <p class="p9"><br></p>
  68 <p class="p9"><br></p>
  69 <p class="p10"><br></p>
  70 <p class="p10"><br></p>
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