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<div class="refentry">
<a id="tableshuffle"></a>
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<a id="IndexTableshuffle" class="indexterm"></a>
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<h2>
<span class="refentrytitle">tableshuffle</span>
</h2>
<p>tableshuffle —
shuffles the content of a function table so that each element of the source
table is put into a different random position.
</p>
</div>
<div class="refsect1">
<a id="idm281472880716488"></a>
<h2>Description</h2>
<p>
This opcode can be used in order to shuffle the content of
function tables into a random order but without loosing any of
the elements. Imagine shuffling a deck of cards. Each element of
the table is copied to a different random position. If that
position was already chosen before then the next free position
is chosen. The length of the table remains the same.
</p>
</div>
<div class="refsect1">
<a id="idm281472880636136"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>tableshuffle</strong></span> ktablenum</pre>
<pre class="synopsis"><span class="command"><strong>tableshufflei</strong></span> itablenum</pre>
</div>
<div class="refsect1">
<a id="idm281472880633016"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>ktablenum</em></span> or <span class="emphasis"><em>itablenum</em></span>
-- the number of the table to shuffle.
</p>
</div>
<div class="refsect1">
<a id="idm281472880630904"></a>
<h2>Examples</h2>
<p>
Here is an example of the tableshuffle opcode. It uses the file <a class="ulink" href="examples/farey7shuffled.csd" target="_top"><em class="citetitle">farey7shuffled.csd</em></a>.
</p>
<div class="example">
<a id="idm281472880629112"></a>
<p class="title">
<strong>Example 986. Example of the tableshuffle 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="idm281472701909816"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
-odac -+rtaudio=alsa --midioutfile=farey7.mid
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">sr</span><span class="o">=</span><span class="mi">48000</span>
<span class="vg">ksmps</span><span class="o">=</span><span class="mi">10</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>
gi<span class="n">delta</span> <span class="nb">init</span> <span class="mi">100</span>
gi<span class="n">mult</span> <span class="nb">init</span> <span class="mi">101</span>
<span class="c1">;-------- loop and trigger instrument 901 using a Farey Sequence polyrhythm</span>
<span class="kd">instr</span> <span class="nf">1</span>
k<span class="n">indx</span> <span class="nb">init</span> <span class="mi">0</span>
k<span class="n">indx2</span> <span class="nb">init</span> <span class="mi">0</span>
k<span class="n">trigger</span> <span class="nb">init</span> <span class="mi">0</span>
k<span class="n">time_unit</span> <span class="nb">init</span> <span class="nb">p6</span>
k<span class="n">start</span> <span class="nb">init</span> <span class="nb">p4</span>
k<span class="n">loop</span> <span class="nb">init</span> <span class="nb">p5</span>
k<span class="n">initndx</span> <span class="nb">init</span> <span class="mi">0</span>
k<span class="n">fn_times</span> <span class="nb">init</span> gi<span class="n">delta</span>
k<span class="n">note</span> <span class="nb">init</span> <span class="mi">60</span>
k<span class="n">basenote</span> <span class="nb">init</span> <span class="nb">p8</span>
i<span class="n">fundam</span> <span class="nb">init</span> <span class="nb">p7</span>
k<span class="n">trigger</span> <span class="nb">seqtime</span> k<span class="n">time_unit</span><span class="p">,</span> k<span class="n">start</span><span class="p">,</span> k<span class="n">loop</span><span class="p">,</span> k<span class="n">initndx</span><span class="p">,</span> k<span class="n">fn_times</span>
<span class="k">if</span> <span class="p">(</span>k<span class="n">trigger</span> <span class="o">></span> <span class="mi">0</span> <span class="p">)</span> <span class="k">then</span>
k<span class="n">pitch</span> <span class="o">=</span> <span class="nb">cpspch</span><span class="p">(</span>i<span class="n">fundam</span><span class="p">)</span>
k<span class="n">mult</span> <span class="nb">tab</span> k<span class="n">indx2</span><span class="p">,</span> gi<span class="n">mult</span>
k<span class="n">pitch</span> <span class="o">=</span> k<span class="n">pitch</span> <span class="o">*</span> k<span class="n">mult</span>
k<span class="n">note</span> <span class="o">=</span> k<span class="n">basenote</span> <span class="o">+</span> k<span class="n">mult</span>
<span class="nb">event</span> <span class="s">"i"</span><span class="p">,</span> <span class="mi">901</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mf">.4</span><span class="p">,</span> <span class="mf">.1</span><span class="p">,</span> k<span class="n">pitch</span><span class="p">,</span> k<span class="n">pitch</span> <span class="o">*</span> <span class="mf">.9</span><span class="p">,</span> <span class="mf">.4</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mf">.75</span><span class="p">,</span> <span class="mf">.8</span><span class="p">,</span> <span class="mf">1.0</span><span class="p">,</span> <span class="mf">.15</span><span class="p">,</span> <span class="mf">.0</span><span class="p">,</span> <span class="mf">.125</span><span class="p">,</span> <span class="mf">.125</span><span class="p">,</span> <span class="mf">.25</span><span class="p">,</span> <span class="mf">.5</span><span class="p">,</span> <span class="mf">1.0</span><span class="p">,</span> <span class="mf">.0</span><span class="p">,</span> <span class="mf">.0</span><span class="p">,</span> <span class="mf">.0</span><span class="p">,</span> <span class="mf">.0</span><span class="p">,</span> <span class="mf">.125</span><span class="p">,</span> <span class="mf">.25</span><span class="p">,</span> <span class="mf">.25</span><span class="p">,</span> <span class="mf">.25</span><span class="p">,</span> k<span class="n">note</span>
k<span class="n">indx</span> <span class="o">=</span> k<span class="n">indx</span> <span class="o">+</span> <span class="mi">1</span>
k<span class="n">indx</span> <span class="o">=</span> k<span class="n">indx</span> <span class="o">%</span> k<span class="n">loop</span>
k<span class="n">indx2</span> <span class="o">=</span> k<span class="n">indx2</span> <span class="o">+</span> <span class="mi">1</span>
k<span class="n">indx2</span> <span class="o">=</span> k<span class="n">indx2</span> <span class="o">%</span> k<span class="n">loop</span>
<span class="k">if</span> <span class="p">(</span>k<span class="n">indx2</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span> <span class="k">then</span>
<span class="nb">tableshuffle</span> gi<span class="n">mult</span>
<span class="k">endif</span>
<span class="k">endif</span>
<span class="kd">endin</span> <span class="c1">; 1</span>
<span class="c1">;------ basic 2 Operators FM algorithm ----------------</span>
<span class="kd">instr</span> <span class="nf">901</span>
i<span class="n">notedur</span> <span class="o">=</span> <span class="nb">p3</span>
i<span class="n">maxamp</span> <span class="o">=</span> <span class="nb">p4</span> <span class="c1">;ampdb(p4)</span>
i<span class="n">carrfreq</span> <span class="o">=</span> <span class="nb">p5</span>
i<span class="n">modfreq</span> <span class="o">=</span> <span class="nb">p6</span>
i<span class="n">lowndx</span> <span class="o">=</span> <span class="nb">p7</span>
i<span class="n">ndxdiff</span> <span class="o">=</span> <span class="nb">p8</span><span class="o">-</span><span class="nb">p7</span>
k<span class="n">note</span> <span class="o">=</span> <span class="nb">p27</span>
a<span class="n">ampenv</span> <span class="nb">linseg</span> <span class="nb">p9</span><span class="p">,</span> <span class="nb">p14</span><span class="o">*</span><span class="nb">p3</span><span class="p">,</span> <span class="nb">p10</span><span class="p">,</span> <span class="nb">p15</span><span class="o">*</span><span class="nb">p3</span><span class="p">,</span> <span class="nb">p11</span><span class="p">,</span> <span class="nb">p16</span><span class="o">*</span><span class="nb">p3</span><span class="p">,</span> <span class="nb">p12</span><span class="p">,</span> <span class="nb">p17</span><span class="o">*</span><span class="nb">p3</span><span class="p">,</span> <span class="nb">p13</span>
a<span class="n">devenv</span> <span class="nb">linseg</span> <span class="nb">p18</span><span class="p">,</span> <span class="nb">p23</span><span class="o">*</span><span class="nb">p3</span><span class="p">,</span> <span class="nb">p19</span><span class="p">,</span> <span class="nb">p24</span><span class="o">*</span><span class="nb">p3</span><span class="p">,</span> <span class="nb">p20</span><span class="p">,</span> <span class="nb">p25</span><span class="o">*</span><span class="nb">p3</span><span class="p">,</span> <span class="nb">p21</span><span class="p">,</span> <span class="nb">p26</span><span class="o">*</span><span class="nb">p3</span><span class="p">,</span> <span class="nb">p22</span>
a<span class="n">modosc</span> <span class="nb">oscili</span> <span class="p">(</span>i<span class="n">lowndx</span><span class="o">+</span>i<span class="n">ndxdiff</span><span class="o">*</span>a<span class="n">devenv</span><span class="p">)</span><span class="o">*</span>i<span class="n">modfreq</span><span class="p">,</span> i<span class="n">modfreq</span><span class="p">,</span> <span class="mi">10</span>
a<span class="n">carosc</span> <span class="nb">oscili</span> i<span class="n">maxamp</span><span class="o">*</span>a<span class="n">ampenv</span><span class="p">,</span> i<span class="n">carrfreq</span><span class="o">+</span>a<span class="n">modosc</span><span class="p">,</span> <span class="mi">10</span>
<span class="nb">out</span> a<span class="n">carosc</span>
<span class="c1">;------ we also write down a midi track here ----------</span>
<span class="nb">midion</span> <span class="mi">1</span><span class="p">,</span> k<span class="n">note</span><span class="p">,</span> <span class="mi">100</span>
<span class="kd">endin</span> <span class="c1">; 901</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">f</span><span class="mi">10</span> <span class="mi">0</span> <span class="mi">4096</span> <span class="mi">10</span> <span class="mi">1</span>
<span class="nb">f</span><span class="mi">100</span> <span class="mi">0</span> <span class="o">-</span><span class="mi">18</span> <span class="s">"farey"</span> <span class="mi">7</span> <span class="mi">1</span>
<span class="nb">f</span><span class="mi">101</span> <span class="mi">0</span> <span class="o">-</span><span class="mi">18</span> <span class="s">"farey"</span> <span class="mi">7</span> <span class="mi">2</span>
<span class="c1">; p4 kstart := index offset into the Farey Sequence</span>
<span class="c1">; p5 kloop := end index into Farey Seq.</span>
<span class="c1">; p6 timefac := time in seconds for one loop to complete</span>
<span class="c1">; p7 fundam := fundamental of the FM instrument</span>
<span class="c1">; p8 basenote:= root pitch of the midi voice output</span>
<span class="c1">; note that pitch structures of the midi file output are not equivalent to the</span>
<span class="c1">; ones used for the FM real-time synthesis.</span>
<span class="c1">; start dur kstart kloop timefac fundam. basenote</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mf">0.0</span> <span class="mi">44</span> <span class="mi">0</span> <span class="mi">18</span> <span class="mi">1</span> <span class="mf">6.05</span> <span class="mi">60</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">4</span> <span class="mi">40</span> <span class="mi">0</span> <span class="mi">18</span> <span class="mi">3</span> <span class="mf">7.05</span> <span class="mi">72</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">10</span> <span class="mi">38</span> <span class="mi">0</span> <span class="mi">18</span> <span class="mf">1.5</span> <span class="mi">8</span> <span class="mi">84</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">15</span> <span class="mi">50</span> <span class="mi">0</span> <span class="mi">18</span> <span class="mi">1</span> <span class="mi">5</span> <span class="mi">48</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">22</span> <span class="mi">75</span> <span class="mi">5</span> <span class="mi">17</span> <span class="mf">1.7</span> <span class="mi">4</span> <span class="mi">36</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>
</div>
<div class="refsect1">
<a id="idm281472880624920"></a>
<h2>See Also</h2>
<p>
<a class="link" href="GENfarey.html" title="GENfarey"><em class="citetitle">GEN farey</em></a>,
<a class="link" href="tablefilter.html" title="tablefilter"><em class="citetitle">tablefilter</em></a>,
<a class="link" href="tablecopy.html" title="tablecopy"><em class="citetitle">tablecopy</em></a>
</p>
</div>
<div class="refsect1">
<a id="idm281472880620824"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Georg Boenn </td>
</tr>
<tr>
<td>University of Glamorgan, UK</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 5.13</p>
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