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<div class="refentry" title="dumpk">
<a id="dumpk"></a>
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<a id="IndexDumpk" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">dumpk</span>
</h2>
<p>dumpk —
Periodically writes an orchestra control-signal value to an external file.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp18792120"></a>
<h2>Description</h2>
<p>
Periodically writes an orchestra control-signal value to a named external file in a specific format.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp18824584"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>dumpk</strong></span> ksig, ifilname, iformat, iprd</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp18825568"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ifilname</em></span> -- character string (in double quotes, spaces permitted) denoting the external file name. May either be a full path name with target directory specified or a simple filename to be created within the current directory
</p>
<p>
<span class="emphasis"><em>iformat</em></span> -- specifies the output data format:
</p>
<div class="itemizedlist">
<ul class="itemizedlist" type="disc">
<li class="listitem">
<p>1 = 8-bit signed char(high order 8 bits of a 16-bit integer</p>
</li>
<li class="listitem">
<p>4 = 16-bit short integers</p>
</li>
<li class="listitem">
<p>5 = 32-bit long integers</p>
</li>
<li class="listitem">
<p>6 = 32-bit floats</p>
</li>
<li class="listitem">
<p>7 = ASCII long integers</p>
</li>
<li class="listitem">
<p>8 = ASCII floats (2 decimal places)</p>
</li>
</ul>
</div>
<p>
</p>
<p>
Note that A-law and U-law output are not available, and that all formats except the last two are binary. The output file contains no header information.
</p>
<p>
<span class="emphasis"><em>iprd</em></span> -- the period of <span class="emphasis"><em>ksig</em></span> output in seconds, rounded to the nearest orchestra control period. A value of 0 implies one control period (the enforced minimum), which will create an output file sampled at the orchestra control rate.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp18830984"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>ksig</em></span> -- a control-rate signal
</p>
<p>
This opcode allows a generated control signal value to be saved in a named external file. The file contains no self-defining header information. But it contains a regularly sampled time series, suitable for later input or analysis. There may be any number of <span class="emphasis"><em>dumpk</em></span> opcodes in an instrument or orchestra but each must write to a different file.
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp18832592"></a>
<h2>Examples</h2>
<p>
Here is an example of the dumpk opcode. It uses the file <a class="ulink" href="examples/dumpk.csd" target="_top"><em class="citetitle">dumpk.csd</em></a>.
</p>
<div class="example">
<a id="idp18833560"></a>
<p class="title">
<strong>Example 193. Example of the dumpk 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>
<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 dumpk.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> 20
<span class="ohdr">nchnls</span> <span class="op">=</span> 1
<span class="comment">; By Andres Cabrera 2008</span>
<span class="oblock">instr</span> 1
<span class="comment">; Write fibonacci numbers to file "fibonacci.txt"</span>
<span class="comment">; as ascii long integers (mode 7), using the orchestra's</span>
<span class="comment">; control rate (iprd = 0)</span>
knumber <span class="opc">init</span> 0
koldnumber <span class="opc">init</span> 1
ktrans <span class="opc">init</span> 1
ktrans <span class="op">=</span> knumber
knumber <span class="op">=</span> knumber <span class="op">+</span> koldnumber
koldnumber <span class="op">=</span> ktrans
<span class="opc">dumpk</span> knumber, "fibonacci.txt", 7, 0
<span class="opc">printk2</span> knumber
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">;Write to the file for 1 second. Since control rate is 20, 20 values will be written</span>
<span class="stamnt">i</span> 1 0 1
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
<p>
Here is another example of the dumpk opcode. It uses the file <a class="ulink" href="examples/dumpk-2.csd" target="_top"><em class="citetitle">dumpk-2.csd</em></a>.
</p>
<div class="example">
<a id="idp18836400"></a>
<p class="title">
<strong>Example 194. Example 2 of the dumpk opcode.</strong>
</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>
-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 dumpk-2.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 <span class="comment">;writes a control signal to a file</span>
kfreq <span class="opc">randh</span> 100, 1, 2, 1, 500 <span class="comment">;generates one random number between 400 and 600 per second</span>
<span class="opc">dumpk</span> kfreq, "dumpk.txt", 8, 1 <span class="comment">;writes the control signal</span>
<span class="opc">printk</span> 1, kfreq <span class="comment">;prints it</span>
<span class="oblock">endin</span>
<span class="oblock">instr</span> 2 <span class="comment">;reads the file written by instr 1</span>
kfreq <span class="opc">readk</span> "dumpk.txt", 8, 1
<span class="opc">printk</span> 1, kfreq <span class="comment">;prints it</span>
aout <span class="opc">poscil</span> .2, kfreq, giSine
<span class="opc">outs</span> aout, aout
<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">i</span> 2 5 5
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
Its output should include lines like this:
</p>
<pre class="screen">
WARNING: Seeding from current time 683384022
i 1 time 1.00033: 463.64510
i 1 time 2.00000: 463.64510
i 1 time 3.00000: 483.14200
i 1 time 4.00000: 567.55973
i 1 time 5.00000: 576.37060
i 1 time 6.00000: 460.66550
i 2 time 6.00033: 463.64510
i 2 time 7.00000: 463.64510
i 2 time 8.00000: 483.14200
i 2 time 9.00000: 567.55970
i 2 time 10.00000: 576.37060
i 2 time 11.00000: 460.66550</pre>
<p>
</p>
</div>
<div class="refsect1" title="See Also">
<a id="idp18838328"></a>
<h2>See Also</h2>
<p>
<a class="link" href="dumpk2.html" title="dumpk2"><em class="citetitle">dumpk2</em></a>,
<a class="link" href="dumpk3.html" title="dumpk3"><em class="citetitle">dumpk3</em></a>,
<a class="link" href="dumpk4.html" title="dumpk4"><em class="citetitle">dumpk4</em></a>,
<a class="link" href="readk.html" title="readk"><em class="citetitle">readk</em></a>,
<a class="link" href="readk2.html" title="readk2"><em class="citetitle">readk2</em></a>,
<a class="link" href="readk3.html" title="readk3"><em class="citetitle">readk3</em></a>,
<a class="link" href="readk4.html" title="readk4"><em class="citetitle">readk4</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp18842920"></a>
<h2>Credits</h2>
<p>By: John ffitch and Barry Vercoe</p>
<p>1999 or earlier</p>
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distrib
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Mageia
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5
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x86_64
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media
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core-release
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by-pkgid
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b707d9a4ee443103660a75ccb6e51334
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files
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555
