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<h2>
<span class="refentrytitle">sum</span>
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<p>sum —
Sums any number of a-rate signals.
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<div class="refsect1" title="Description">
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<h2>Description</h2>
<p>
Sums any number of a-rate signals.
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<div class="refsect1" title="Syntax">
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<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>sum</strong></span> asig1 [, asig2] [, asig3] [...]</pre>
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<div class="refsect1" title="Performance">
<a id="idp46809880"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>asig1, asig2, ...</em></span> -- a-rate signals to be summed (mixed or added).
</p>
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<div class="refsect1" title="Examples">
<a id="idp46810752"></a>
<h2>Examples</h2>
<p>
Here is an example of the sum opcode. It uses the file <a class="ulink" href="examples/sum.csd" target="_top"><em class="citetitle">sum.csd</em></a>.
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<a id="idp46811720"></a>
<p class="title">
<strong>Example 838. Example of the sum opcode.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<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>
-odac <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o sum.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span> <span class="op">=</span> 1
gisine <span class="ohdr">ftgen</span> 0, 0, 2^10, 10, 1
<span class="oblock">instr</span> 1
a1 <span class="opc">oscili</span> 1, 10.0, gisine <span class="comment">;combine 3 sinusses</span>
a2 <span class="opc">oscili</span> 1, 1.0, gisine <span class="comment">;at different rates</span>
a3 <span class="opc">oscili</span> 1, 3.0, gisine
ares <span class="opc">sum</span> a1, a2, a3 <span class="comment">;sum them</span>
ares <span class="op">=</span> ares<span class="op">*</span>100 <span class="comment">;scale result and</span>
asig <span class="opc">poscil</span> .5, ares<span class="op">+</span>110, gisine <span class="comment">;add to frequency </span>
<span class="opc">outs</span> asig, asig
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">i</span>1 0 5
<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" />
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<div class="refsect1" title="Credits">
<a id="idp46813984"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Gabriel Maldonado</td>
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<td>Italy</td>
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<td>April 1999</td>
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<p>
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<p>New in Csound version 3.54</p>
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