<?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>ampmidi</title> <link rel="stylesheet" type="text/css" href="csound.css" /> <link rel="stylesheet" type="text/css" href="syntax-highlighting.css" /> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /> <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="ampdbfs.html" title="ampdbfs" /> <link rel="next" href="ampmidid.html" title="ampmidid" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">ampmidi</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="ampdbfs.html">Prev</a> </td> <th width="60%" align="center">Orchestra Opcodes and Operators</th> <td width="20%" align="right"> <a accesskey="n" href="ampmidid.html">Next</a></td> </tr> </table> <hr /> </div> <div class="refentry"> <a id="ampmidi"></a> <div class="titlepage"></div> <a id="IndexAmpmidi" class="indexterm"></a> <div class="refnamediv"> <h2> <span class="refentrytitle">ampmidi</span> </h2> <p>ampmidi — Get the velocity of the current MIDI event. </p> </div> <div class="refsect1"> <a id="idm281472951512312"></a> <h2>Description</h2> <p> Get the velocity of the current MIDI event. </p> </div> <div class="refsect1"> <a id="idm281472951510968"></a> <h2>Syntax</h2> <pre class="synopsis">iamp <span class="command"><strong>ampmidi</strong></span> iscal [, ifn]</pre> </div> <div class="refsect1"> <a id="idm281472951508728"></a> <h2>Initialization</h2> <p> <span class="emphasis"><em>iscal</em></span> -- i-time scaling factor </p> <p> <span class="emphasis"><em>ifn</em></span> (optional, default=0) -- function table number of a normalized translation table, by which the incoming value is first interpreted. The default value is 0, denoting no translation. </p> </div> <div class="refsect1"> <a id="idm281472951459336"></a> <h2>Performance</h2> <p> Get the velocity of the current MIDI event, optionally pass it through a normalized translation table, and return an amplitude value in the range 0 - <span class="emphasis"><em>iscal</em></span>. </p> </div> <div class="refsect1"> <a id="idm281472951457496"></a> <h2>Examples</h2> <p> Here is an example of the ampmidi opcode. It uses the file <a class="ulink" href="examples/ampmidi.csd" target="_top"><em class="citetitle">ampmidi.csd</em></a>. </p> <div class="example"> <a id="idm281472951455720"></a> <p class="title"> <strong>Example 54. Example of the ampmidi 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> <div class="refsect1"> <a id="idm281472787703576"></a> <pre class="programlisting"> <span class="nt"><CsoundSynthesizer></span> <span class="nt"><CsOptions></span> <span class="c1">; Select audio/midi flags here according to platform</span> -odac <span class="c1">;;;RT audio out</span> <span class="c1">;-iadc ;;;uncomment -iadc if RT audio input is needed too</span> <span class="c1">; For Non-realtime ouput leave only the line below:</span> <span class="c1">;-o ampmidi.wav -W ;;; for file output any platform</span> <span class="nt"></CsOptions></span> <span class="nt"><CsInstruments></span> <span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span> <span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">32</span> <span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span> <span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span> <span class="kd">instr</span> <span class="nf">1</span> <span class="c1">;expects MIDI note inputs on channel 1</span> i<span class="n">amp</span> <span class="nb">ampmidi</span> <span class="mi">1</span> <span class="c1">; scale amplitude between 0 and 1</span> a<span class="n">sig</span> <span class="nb">oscil</span> i<span class="n">amp</span><span class="p">,</span> <span class="mi">220</span><span class="p">,</span> <span class="mi">1</span> <span class="nb">print</span> i<span class="n">amp</span> <span class="nb">outs</span> a<span class="n">sig</span><span class="p">,</span> a<span class="n">sig</span> <span class="kd">endin</span> <span class="nt"></CsInstruments></span> <span class="nt"><CsScore></span> <span class="c1">;Dummy f-table for 1 minute</span> <span class="nb">f</span> <span class="mi">0</span> <span class="mi">60</span> <span class="c1">;sine wave.</span> <span class="nb">f</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">16384</span> <span class="mi">10</span> <span class="mi">1</span> <span class="nb">e</span> <span class="nt"></CsScore></span> <span class="nt"></CsoundSynthesizer></span> </pre> </div> </div> </div> <p><br class="example-break" /> </p> </div> <div class="refsect1"> <a id="idm281472951451496"></a> <h2>See Also</h2> <p> <a class="link" href="aftouch.html" title="aftouch"><em class="citetitle">aftouch</em></a>, <a class="link" href="cpsmidi.html" title="cpsmidi"><em class="citetitle">cpsmidi</em></a>, <a class="link" href="cpsmidib.html" title="cpsmidib"><em class="citetitle">cpsmidib</em></a>, <a class="link" href="midictrl.html" title="midictrl"><em class="citetitle">midictrl</em></a>, <a class="link" href="notnum.html" title="notnum"><em class="citetitle">notnum</em></a>, <a class="link" href="octmidi.html" title="octmidi"><em class="citetitle">octmidi</em></a>, <a class="link" href="octmidib.html" title="octmidib"><em class="citetitle">octmidib</em></a>, <a class="link" href="pchbend.html" title="pchbend"><em class="citetitle">pchbend</em></a>, <a class="link" href="pchmidi.html" title="pchmidi"><em class="citetitle">pchmidi</em></a>, <a class="link" href="pchmidib.html" title="pchmidib"><em class="citetitle">pchmidib</em></a>, <a class="link" href="veloc.html" title="veloc"><em class="citetitle">veloc</em></a> </p> </div> <div class="refsect1"> <a id="idm281472951439784"></a> <h2>Credits</h2> <p> </p> <table border="0" summary="Simple list" class="simplelist"> <tr> <td>Author: Barry L. Vercoe - Mike Berry</td> </tr> <tr> <td>MIT - Mills</td> </tr> <tr> <td>May 1997</td> </tr> </table> <p> </p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="ampdbfs.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="ampmidid.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">ampdbfs </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> ampmidid</td> </tr> </table> </div> </body> </html>