<?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>initc7</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="initc21.html" title="initc21" /> <link rel="next" href="inleta.html" title="inleta" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">initc7</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="initc21.html">Prev</a> </td> <th width="60%" align="center">Orchestra Opcodes and Operators</th> <td width="20%" align="right"> <a accesskey="n" href="inleta.html">Next</a></td> </tr> </table> <hr /> </div> <div class="refentry" title="initc7"> <a id="initc7"></a> <div class="titlepage"></div> <a id="IndexInitc7" class="indexterm"></a> <div class="refnamediv"> <h2> <span class="refentrytitle">initc7</span> </h2> <p>initc7 — Initializes the controller used to create a 7-bit MIDI value. </p> </div> <div class="refsect1" title="Description"> <a id="idp27018912"></a> <h2>Description</h2> <p> Initializes MIDI controller <span class="emphasis"><em>ictlno</em></span> with <span class="emphasis"><em>ivalue</em></span> </p> </div> <div class="refsect1" title="Syntax"> <a id="idp27029288"></a> <h2>Syntax</h2> <pre class="synopsis"><span class="command"><strong>initc7</strong></span> ichan, ictlno, ivalue</pre> </div> <div class="refsect1" title="Initialization"> <a id="idp27030312"></a> <h2>Initialization</h2> <p> <span class="emphasis"><em>ichan</em></span> -- MIDI channel (1-16) </p> <p> <span class="emphasis"><em>ictlno</em></span> -- 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="idp27032064"></a> <h2>Performance</h2> <p> <span class="emphasis"><em>initc7</em></span> can be used together with both <a class="link" href="midic7.html" title="midic7"><em class="citetitle">midic7</em></a> and <a class="link" href="ctrl7.html" title="ctrl7"><em class="citetitle">ctrl7</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>midic7</em></span> and <span class="emphasis"><em>ctrl7</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="Examples"> <a id="idp27069264"></a> <h2>Examples</h2> <p> Here is an example of the initc7 opcode. It uses the file <a class="ulink" href="examples/initc7.csd" target="_top"><em class="citetitle">initc7.csd</em></a>. </p> <div class="example"> <a id="idp27070232"></a> <p class="title"> <strong>Example 365. Example of the initc7 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> -odac -M0 <span class="comment">;;;realtime audio I/O with MIDI in</span> <span class="comment">;-iadc ;;;uncomment -iadc if RT audio input is needed too</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">; expects MIDI controller input on channel 1</span> <span class="comment">; run and move your midi controller to see result</span> imax <span class="op">=</span> 1 imin <span class="op">=</span> 0 ichan <span class="op">=</span> 1 ictlno <span class="op">=</span> 7 <span class="opc">initc7</span> 1, 7, 1 <span class="comment">; start at max. volume</span> kamp <span class="opc">ctrl7</span> ichan, ictlno, imin, imax <span class="comment">; controller 7</span> <span class="opc">printk2</span> kamp asig <span class="opc">oscil</span> kamp, 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="stamnt">f</span> 1 0 4096 10 1 <span class="stamnt">i</span>1 0 20 <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="See Also"> <a id="idp27072504"></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="initc14.html" title="initc14"><em class="citetitle">initc14</em></a>, <a class="link" href="initc21.html" title="initc21"><em class="citetitle">initc21</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="idp27077360"></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="initc21.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="inleta.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">initc21 </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> inleta</td> </tr> </table> </div> </body> </html>