<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>chanctrl</title>
<link rel="stylesheet" type="text/css" href="csound.css" />
<meta name="generator" content="DocBook XSL Stylesheets V1.76.1" />
<link rel="home" href="index.html" title="The Canonical Csound Reference Manual" />
<link rel="up" href="OpcodesTop.html" title="Orchestra Opcodes and Operators" />
<link rel="prev" href="cggoto.html" title="cggoto" />
<link rel="next" href="changed.html" title="changed" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">chanctrl</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="cggoto.html">Prev</a> </td>
<th width="60%" align="center">Orchestra Opcodes and Operators</th>
<td width="20%" align="right"> <a accesskey="n" href="changed.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry" title="chanctrl">
<a id="chanctrl"></a>
<div class="titlepage"></div>
<a id="IndexChanctrl" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">chanctrl</span>
</h2>
<p>chanctrl —
Get the current value of a MIDI channel controller.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp15357824"></a>
<h2>Description</h2>
<p>
Get the current value of a controller and optionally map it onto specified range.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp15358520"></a>
<h2>Syntax</h2>
<pre class="synopsis">ival <span class="command"><strong>chanctrl</strong></span> ichnl, ictlno [, ilow] [, ihigh]</pre>
<pre class="synopsis">kval <span class="command"><strong>chanctrl</strong></span> ichnl, ictlno [, ilow] [, ihigh]</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp15369416"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ichnl</em></span> -- the MIDI channel (1-16).
</p>
<p>
<span class="emphasis"><em>ictlno</em></span> -- the MIDI controller number (0-127).
</p>
<p>
<span class="emphasis"><em>ilow</em></span>, <span class="emphasis"><em>ihigh</em></span> -- low and high ranges for mapping
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp15371376"></a>
<h2>Examples</h2>
<p>
Here is an example of the chanctrl opcode. It uses the file <a class="ulink" href="examples/chanctrl.csd" target="_top"><em class="citetitle">chanctrl.csd</em></a>.
</p>
<div class="example">
<a id="idp15372328"></a>
<p class="title">
<strong>Example 98. Example of the chanctrl 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 No messages MIDI in</span>
-odac -d -M0 <span class="comment">;;;RT audio I/O with MIDI in</span>
<span class="comment">;-iadc ;;;uncomment -iadc if RT audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o chanctrl.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
<span class="oblock">instr</span> 1 <span class="comment">; press your midi keyboard and move your midi controller to see result</span>
ichnl <span class="op">=</span> 1 <span class="comment">;MIDI note inputs on channel 1</span>
ictlno <span class="op">=</span> 7 <span class="comment">;use midi volume controller </span>
kch <span class="opc">chanctrl</span> ichnl, 7 <span class="comment">;to control amplitude of oscil</span>
<span class="opc">printk2</span> kch
asig <span class="opc">oscil</span> kch<span class="op">*</span>(1<span class="op">/</span>127), 220, 1
<span class="opc">outs</span> asig, asig
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">;Dummy f-table to give time for real-time MIDI events</span>
<span class="stamnt">f</span> 0 30
<span class="comment">;sine wave.</span>
<span class="stamnt">f</span> 1 0 16384 10 1
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp15459288"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Mike Berry</td>
</tr>
<tr>
<td>Mills College</td>
</tr>
<tr>
<td>May, 1997</td>
</tr>
</table>
<p>
</p>
<p>Thanks goes to Rasmus Ekman for pointing out the correct MIDI channel and controller number ranges.</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="cggoto.html">Prev</a> </td>
<td width="20%" align="center">
<a accesskey="u" href="OpcodesTop.html">Up</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="changed.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">cggoto </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> changed</td>
</tr>
</table>
</div>
</body>
</html>
distrib
>
Mageia
>
5
>
x86_64
>
media
>
core-release
>
by-pkgid
>
b707d9a4ee443103660a75ccb6e51334
>
files
>
418
