<?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>initc21</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="initc14.html" title="initc14" /> <link rel="next" href="initc7.html" title="initc7" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">initc21</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="initc14.html">Prev</a> </td> <th width="60%" align="center">Orchestra Opcodes and Operators</th> <td width="20%" align="right"> <a accesskey="n" href="initc7.html">Next</a></td> </tr> </table> <hr /> </div> <div class="refentry" title="initc21"> <a id="initc21"></a> <div class="titlepage"></div> <a id="IndexInitc21" class="indexterm"></a> <div class="refnamediv"> <h2> <span class="refentrytitle">initc21</span> </h2> <p>initc21 — Initializes the controllers used to create a 21-bit MIDI value. </p> </div> <div class="refsect1" title="Description"> <a id="idp26981168"></a> <h2>Description</h2> <p> Initializes the controllers used to create a 21-bit MIDI value. </p> </div> <div class="refsect1" title="Syntax"> <a id="idp26981840"></a> <h2>Syntax</h2> <pre class="synopsis"><span class="command"><strong>initc21</strong></span> ichan, ictlno1, ictlno2, ictlno3, ivalue</pre> </div> <div class="refsect1" title="Initialization"> <a id="idp26992160"></a> <h2>Initialization</h2> <p> <span class="emphasis"><em>ichan</em></span> -- MIDI channel (1-16) </p> <p> <span class="emphasis"><em>ictlno1</em></span> -- most significant byte controller number (0-127) </p> <p> <span class="emphasis"><em>ictlno2</em></span> -- medium significant byte controller number (0-127) </p> <p> <span class="emphasis"><em>ictlno3</em></span> -- least significant byte controller number (0-127) </p> <p> <span class="emphasis"><em>ivalue</em></span> -- floating point value (must be within 0 to 1) </p> </div> <div class="refsect1" title="Performance"> <a id="idp26994840"></a> <h2>Performance</h2> <p> <span class="emphasis"><em>initc21</em></span> can be used together with both <a class="link" href="midic21.html" title="midic21"><em class="citetitle">midic21</em></a> and <a class="link" href="ctrl21.html" title="ctrl21"><em class="citetitle">ctrl21</em></a> opcodes for initializing the first controller's value. <span class="emphasis"><em>ivalue</em></span> argument must be set with a number within 0 to 1. An error occurs if it is not. Use the following formula to set <span class="emphasis"><em>ivalue</em></span> according with <span class="emphasis"><em>midic21</em></span> and <span class="emphasis"><em>ctrl21</em></span> min and max range: </p> <div class="literallayout"> <p><br /> ivalue = (initial_value - min) / (max - min)<br /> </p> </div> <p> </p> </div> <div class="refsect1" title="See Also"> <a id="idp27035536"></a> <h2>See Also</h2> <p> <a class="link" href="ctrl7.html" title="ctrl7"><em class="citetitle">ctrl7</em></a>, <a class="link" href="ctrl14.html" title="ctrl14"><em class="citetitle">ctrl14</em></a>, <a class="link" href="ctrl21.html" title="ctrl21"><em class="citetitle">ctrl21</em></a>, <a class="link" href="ctrlinit.html" title="ctrlinit"><em class="citetitle">ctrlinit</em></a>, <a class="link" href="initc7.html" title="initc7"><em class="citetitle">initc7</em></a>, <a class="link" href="initc14.html" title="initc14"><em class="citetitle">initc14</em></a>, <a class="link" href="midic7.html" title="midic7"><em class="citetitle">midic7</em></a>, <a class="link" href="midic14.html" title="midic14"><em class="citetitle">midic14</em></a>, <a class="link" href="midic21.html" title="midic21"><em class="citetitle">midic21</em></a> </p> </div> <div class="refsect1" title="Credits"> <a id="idp27040432"></a> <h2>Credits</h2> <p> </p> <table border="0" summary="Simple list" class="simplelist"> <tr> <td>Author: Gabriel Maldonado</td> </tr> <tr> <td>Italy</td> </tr> </table> <p> </p> <p>New in Csound version 3.47</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="initc14.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="initc7.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">initc14 </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> initc7</td> </tr> </table> </div> </body> </html>