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<h2>
<span class="refentrytitle">GEN02</span>
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<p>GEN02 —
Transfers data from immediate pfields into a function table.
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<div class="refsect1" title="Description">
<a id="id3728648"></a>
<h2>Description</h2>
<p>
This subroutine transfers data from immediate pfields into a function table.
</p>
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<div class="refsect1" title="Syntax">
<a id="id3728662"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>f</strong></span> # time size 2 v1 v2 v3 ...</pre>
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<div class="refsect1" title="Initialization">
<a id="id3729626"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>size</em></span> -- number of points in the table. Must be a power of 2 or a power-of-2 plus 1 (see <a class="link" href="f.html" title="f Statement (or Function Table Statement)"><em class="citetitle">f statement</em></a>). The maximum tablesize is 16777216 (2<sup>24</sup>) points.
</p>
<p>
<span class="emphasis"><em>v1, v2, v3,</em></span> etc. -- values to be copied directly into the table space. The number of values is limited by the compile-time variable <span class="emphasis"><em>PMAX</em></span>, which controls the maximum pfields (currently 1000). The values copied may include the table guard point; any table locations not filled will contain zeros.
</p>
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<th align="left">Note</th>
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<p>
If p4 (the GEN routine number is positive, the table will be
post-normalized (rescaled to a maximum absolute value of 1 after
generation). A negative p4 will cause rescaling to be skipped. You will
usually want to use -2 with this GEN function, so that your values are
not normalized.
</p>
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<div class="refsect1" title="Examples">
<a id="id3729694"></a>
<h2>Examples</h2>
<p>
Here is a simple example of the GEN02 routine. It uses the files <a class="ulink" href="examples/gen02.csd" target="_top"><em class="citetitle">gen02.csd</em></a>. It places 12 values plus an explicit wrap-around guard value into a table of size next-highest power of 2. Rescaling is inhibited. Here is its diagram:
</p>
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<img src="images/gen02.png" alt="Diagram of the waveform generated by GEN02." />
<div class="caption">
<p>Diagram of the waveform generated by GEN02.</p>
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<p>
</p>
<div class="example">
<a id="id3729743"></a>
<p class="title">
<b>Example 734. A simple example of the GEN02 routine.</b>
</p>
<div class="example-contents">
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out Audio in</span>
-odac -iadc <span class="comment">;;;RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o gen02.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="comment">; Initialize the global variables.</span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">kr</span> <span class="op">=</span> 4410
<span class="ohdr">ksmps</span> <span class="op">=</span> 10
<span class="ohdr">nchnls</span> <span class="op">=</span> 1
<span class="comment">; Instrument #1.</span>
<span class="oblock">instr</span> 1
<span class="comment">; Create an index over the length of our entire note.</span>
kcps <span class="opc">init</span> 1<span class="op">/</span>p3
kndx <span class="opc">phasor</span> kcps
<span class="comment">; Read Table #1 with our index.</span>
ifn <span class="op">=</span> 1
ixmode <span class="op">=</span> 1
kamp <span class="opc">tablei</span> kndx, ifn, ixmode
<span class="comment">; Create a sine wave, use the Table #1 values to control</span>
<span class="comment">; the amplitude. This creates a sound with a long attack.</span>
a1 <span class="opc">oscil</span> kamp<span class="op">*</span>30000, 440, 2
<span class="opc">out</span> a1
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Table #1: an envelope with a long attack (using GEN02).</span>
<span class="stamnt">f</span> 1 0 16 2 0 1 2 3 4 5 6 7 8 9 10 11 0
<span class="comment">; Table #2, a sine wave.</span>
<span class="stamnt">f</span> 2 0 16384 10 1
<span class="comment">; Play Instrument #1 for 2 seconds.</span>
<span class="stamnt">i</span> 1 0 2
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
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<p><br class="example-break" />
</p>
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<div class="refsect1" title="See Also">
<a id="id3729760"></a>
<h2>See Also</h2>
<p>
<a class="link" href="GEN17.html" title="GEN17"><em class="citetitle">GEN17</em></a>
</p>
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<div class="refsect1" title="Credits">
<a id="id3729778"></a>
<h2>Credits</h2>
<p>December 2002. Thanks to Rasmus Ekman, corrected the limit of the <span class="emphasis"><em>PMAX</em></span> variable.</p>
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