<?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>mpulse</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="mp3scal.html" title="mp3scal" />
<link rel="next" href="mrtmsg.html" title="mrtmsg" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">mpulse</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="mp3scal.html">Prev</a> </td>
<th width="60%" align="center">Orchestra Opcodes and Operators</th>
<td width="20%" align="right"> <a accesskey="n" href="mrtmsg.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry">
<a id="mpulse"></a>
<div class="titlepage"></div>
<a id="IndexMpulse" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">mpulse</span>
</h2>
<p>mpulse —
Generates a set of impulses.
</p>
</div>
<div class="refsect1">
<a id="idm281472912038248"></a>
<h2>Description</h2>
<p>
Generates a set of impulses of amplitude <span class="emphasis"><em>kamp</em></span> separated by <span class="emphasis"><em>kintvl</em></span> seconds (or samples if <span class="emphasis"><em>kintvl</em></span> is negative). The first impulse is generated after a delay of <span class="emphasis"><em>ioffset</em></span> seconds.
</p>
</div>
<div class="refsect1">
<a id="idm281472911967128"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>mpulse</strong></span> kamp, kintvl [, ioffset]</pre>
</div>
<div class="refsect1">
<a id="idm281472911964872"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ioffset</em></span> (optional, default=0) -- the delay before the first impulse. If it is negative, the value is taken as the number of samples, otherwise it is in seconds. Default is zero.
</p>
</div>
<div class="refsect1">
<a id="idm281472911962872"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kamp</em></span> -- amplitude of the impulses generated
</p>
<p>
<span class="emphasis"><em>kintvl</em></span> -- Interval of time in seconds (or samples if <span class="emphasis"><em>kintvl</em></span> is negative) to the next pulse.
</p>
<p>
After the initial delay, an impulse of <span class="emphasis"><em>kamp</em></span> amplitude is generated as a single sample. Immediately after generating the impulse, the time of the next one is determined from the value of <span class="emphasis"><em>kintvl</em></span> at that precise moment. This means that any changes in <span class="emphasis"><em>kintvl</em></span> between impulses are discarded. If <span class="emphasis"><em>kintvl</em></span> is zero, there is an infinite wait to the next impulse. If <span class="emphasis"><em>kintvl</em></span> is negative, the interval is counted in number of samples rather than seconds.
</p>
<p>
</p>
</div>
<div class="refsect1">
<a id="idm281472911956216"></a>
<h2>Examples</h2>
<p>
Here is an example of the mpulse opcode. It uses the file <a class="ulink" href="examples/mpulse.csd" target="_top"><em class="citetitle">mpulse.csd</em></a>.
</p>
<div class="example">
<a id="idm281472911954360"></a>
<p class="title">
<strong>Example 583. Example of the mpulse 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="idm281472735387416"></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>
<span class="c1">; Audio out Audio in No messages</span>
-odac -iadc -d <span class="c1">;;;RT audio I/O</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o mpulse.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="c1">; Initialize the global variables.</span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">kr</span> <span class="o">=</span> <span class="mi">4410</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">10</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">1</span>
gk<span class="n">freq</span> <span class="nb">init</span> <span class="mf">0.1</span>
<span class="kd">instr</span> <span class="nf">1</span>
k<span class="n">amp</span> <span class="o">=</span> <span class="mi">10000</span>
a<span class="n">1</span> <span class="nb">mpulse</span> k<span class="n">amp</span><span class="p">,</span> gk<span class="n">freq</span>
<span class="nb">out</span> a<span class="n">1</span>
<span class="kd">endin</span>
<span class="kd">instr</span> <span class="nf">2</span>
<span class="c1">; Assign the value of p4 to gkfreq</span>
gk<span class="n">freq</span> <span class="nb">init</span> <span class="nb">p4</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="c1">; Play Instrument #1 for one second.</span>
<span class="nb">i</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">11</span>
<span class="nb">i</span> <span class="mi">2</span> <span class="mi">2</span> <span class="mi">1</span> <span class="mf">0.05</span>
<span class="nb">i</span> <span class="mi">2</span> <span class="mi">4</span> <span class="mi">1</span> <span class="mf">0.01</span>
<span class="nb">i</span> <span class="mi">2</span> <span class="mi">6</span> <span class="mi">1</span> <span class="mf">0.005</span>
<span class="c1">; only last notes are audible</span>
<span class="nb">i</span> <span class="mi">2</span> <span class="mi">8</span> <span class="mi">1</span> <span class="mf">0.003</span>
<span class="nb">i</span> <span class="mi">2</span> <span class="mi">10</span> <span class="mi">1</span> <span class="mf">0.002</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="idm281472911950168"></a>
<h2>See Also</h2>
<p>
Another example of how to use mpulse can be found here: <a class="link" href="mode.html" title="mode"><em class="citetitle">mode</em></a>
</p>
</div>
<div class="refsect1">
<a id="idm281472911947976"></a>
<h2>Credits</h2>
<p>Written by John ffitch.</p>
<p>New in version 4.08</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="mp3scal.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="mrtmsg.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">mp3scal </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> mrtmsg</td>
</tr>
</table>
</div>
</body>
</html>
distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-release
>
by-pkgid
>
5fcfcb7517038d1f44ab4e478e6e61fa
>
files
>
2497
