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<h2>
<span class="refentrytitle">tabsum</span>
</h2>
<p>tabsum —
Adding values in a range of a table.
</p>
</div>
<div class="refsect1">
<a id="idm281472879635848"></a>
<h2>Description</h2>
<p>
Sums the values in an f-table in a consecutive range.
</p>
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<div class="refsect1">
<a id="idm281472879634664"></a>
<h2>Syntax</h2>
<pre class="synopsis">kr <span class="command"><strong>tabsum</strong></span> ifn[[, kmin] [, kmax]]</pre>
</div>
<div class="refsect1">
<a id="idm281472879576264"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ifn</em></span> -- table number
</p>
</div>
<div class="refsect1">
<a id="idm281472879574728"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kr</em></span> -- input signal to write.
</p>
<p>
<span class="emphasis"><em>kmin, kmax</em></span> -- range of the table to sum.
If omitted or zero they default to 0
to length of the table.
</p>
</div>
<div class="refsect1">
<a id="idm281472879572168"></a>
<h2>Examples</h2>
<p>
Here is an example of the tabsum opcode. It uses the file <a class="ulink" href="examples/tabsum.csd" target="_top"><em class="citetitle">tabsum.csd</em></a>.
</p>
<div class="example">
<a id="idm281472879570312"></a>
<p class="title">
<strong>Example 993. Example of the tabsum 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>
<div class="refsect1">
<a id="idm281472700954856"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="c1">; Select audio/midi flags here according to platform</span>
-odac <span class="c1">;;;realtime audio out</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o tab.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">2205</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">1</span>
<span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span>
<span class="kd">instr</span> <span class="nf">1</span> <span class="c1">;;; Give a value to the increment</span>
k<span class="n">max</span> <span class="o">=</span> <span class="mi">256</span>
k<span class="n">norm</span> <span class="nb">tabsum</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> k<span class="n">max</span>
gk<span class="n">inc</span> <span class="o">=</span> k<span class="n">norm</span><span class="o">/</span><span class="mi">10</span>
<span class="kd">endin</span>
<span class="kd">instr</span> <span class="nf">2</span>
k<span class="n">max</span> <span class="o">=</span> <span class="mi">256</span>
k<span class="n">x</span> <span class="o">=</span> <span class="nb">rnd</span><span class="p">(</span>k<span class="n">max</span><span class="p">)</span>
k<span class="n">rnd</span> <span class="nb">tabsum</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> k<span class="n">x</span>
k<span class="n">norm</span> <span class="nb">tabsum</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> k<span class="n">max</span>
k<span class="n">var</span> <span class="o">=</span> k<span class="n">rnd</span> <span class="o">/</span> k<span class="n">norm</span> <span class="c1">;;; now n [0,1] range</span>
a<span class="n">sig</span> <span class="nb">oscil</span> k<span class="n">var</span><span class="p">,</span> <span class="nb">p4</span><span class="p">,</span> <span class="mi">2</span>
<span class="nb">out</span> a<span class="n">sig</span>
<span class="c1">;;; Make randomness give 1 more often</span>
k<span class="n">c</span> <span class="nb">tab</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1</span>
<span class="nb">tablew</span> k<span class="n">c</span><span class="o">+</span>gk<span class="n">inc</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">f</span><span class="mi">1</span> <span class="mi">0</span> <span class="mi">256</span> <span class="mi">21</span> <span class="mi">1</span>
<span class="nb">f</span><span class="mi">2</span> <span class="mi">0</span> <span class="mi">4096</span> <span class="mi">10</span> <span class="mi">1</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">0</span> <span class="mf">0.1</span>
<span class="nb">i</span><span class="mi">2</span> <span class="mf">0.1</span> <span class="mi">3</span> <span class="mi">440</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
</div>
</div>
<p><br class="example-break" />
</p>
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<div class="refsect1">
<a id="idm281472879566120"></a>
<h2>See Also</h2>
<p>
<a class="link" href="vectorial.html" title="Vectorial Opcodes"><em class="citetitle"></em>Vectorial opcodes</a>
</p>
</div>
<div class="refsect1">
<a id="idm281472879564072"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: John ffitch</td>
</tr>
<tr>
<td>Codemist Ltd</td>
</tr>
<tr>
<td>2009</td>
</tr>
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<p>
</p>
<p>New in version 5.11</p>
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