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<span class="refentrytitle">tempoval</span>
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<p>tempoval —
Reads the current value of the tempo.
</p>
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<div class="refsect1" title="Description">
<a id="idp48768064"></a>
<h2>Description</h2>
<p>
Reads the current value of the tempo.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp48768776"></a>
<h2>Syntax</h2>
<pre class="synopsis">kres <span class="command"><strong>tempoval</strong></span></pre>
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<div class="refsect1" title="Performance">
<a id="idp48779144"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kres</em></span> -- the value of the tempo. If you use a positive value with the <a class="link" href="CommandFlags.html#FlagsMinusLowerT"><em class="citetitle">-t command-line flag</em></a>, <span class="emphasis"><em>tempoval</em></span> returns the percentage increase/decrease from the original tempo of 60 beats per minute. If you don't, its value will be 60 (for 60 beats per minute).
</p>
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<div class="refsect1" title="Examples">
<a id="idp48781048"></a>
<h2>Examples</h2>
<p>
Here is an example of the tempoval opcode. Remember, it only works if you use the <a class="link" href="CommandFlags.html#FlagsMinusLowerT"><em class="citetitle">-t</em></a> flag with Csound. It uses the file <a class="ulink" href="examples/tempoval.csd" target="_top"><em class="citetitle">tempoval.csd</em></a>.
</p>
<div class="example">
<a id="idp48821432"></a>
<p class="title">
<strong>Example 877. Example of the tempoval 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 -t60 <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 tempoval.wav -W -t60 ;;; 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">; Adjust the tempo to 120 beats per minute.</span>
<span class="opc">tempo</span> 120, 60
<span class="comment">; Get the tempo value.</span>
kval <span class="opc">tempoval</span>
<span class="opc">printks</span> "kval <span class="op">=</span> <span class="op">%</span>f\\n", 0.1, kval
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Play Instrument #1 for one second.</span>
<span class="stamnt">i</span> 1 0 1
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
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</div>
<p><br class="example-break" />
Since 120 beats per minute is a 50% increase over the original 60 beats per minute, its output should include lines like:
</p>
<pre class="screen">
kval = 0.500000
</pre>
<p>
</p>
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<div class="refsect1" title="See Also">
<a id="idp48824424"></a>
<h2>See Also</h2>
<p>
<a class="link" href="tempo.html" title="tempo"><em class="citetitle">tempo</em></a> and <a class="link" href="miditempo.html" title="miditempo"><em class="citetitle">miditempo</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp48825976"></a>
<h2>Credits</h2>
<p>Example written by Kevin Conder.</p>
<p>New in version 4.15</p>
<p>December 2002. Thanks to Drake Wilson for pointing out unclear documentation.</p>
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