<?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>envext</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="UtilityOther.html" title="Other Csound Utilities (CS, CSB64ENC, ENVEXT, EXTRACTOR, MAKECSD, MIXER, SCALE, MKDB)" />
<link rel="prev" href="csb64enc.html" title="csb64enc" />
<link rel="next" href="extractor.html" title="extractor" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">envext</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="csb64enc.html">Prev</a> </td>
<th width="60%" align="center">Other Csound Utilities (CS, CSB64ENC, ENVEXT, EXTRACTOR,
MAKECSD, MIXER, SCALE, MKDB)</th>
<td width="20%" align="right"> <a accesskey="n" href="extractor.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry" title="envext">
<a id="envext"></a>
<div class="titlepage"></div>
<div class="refnamediv">
<h2>
<span class="refentrytitle">envext</span>
</h2>
<p>envext —
Extracts the envelope of a file to a text file.
<a id="IndexEnvext" class="indexterm"></a>
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp82031072"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>envext</strong></span> [-flags] soundfile</pre>
<pre class="synopsis">csound -U <span class="command"><strong>envext</strong></span> [-flags] soundfile</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp82075792"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>soundfile</em></span> - Name of the input soundfile.
</p>
<p>
The following flags are available for envext (The default values are
stated in parenthesis):
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td><span class="emphasis"><em>-o fnam</em></span> Name of output filename (newenv)</td>
</tr>
<tr>
<td><span class="emphasis"><em>-w</em></span> size (in seconds) of analysis window (0.25)</td>
</tr>
</table>
<p>
</p>
<p>
The <span class="emphasis"><em>envext</em></span> utility generates a text file containing time and amplitude pairs by finding the absolute peak within each window.
</p>
</div>
<div class="refsect1" title="Example">
<a id="idp82078552"></a>
<h2>Example</h2>
<p>
Using the command (while in the manual directory):
</p>
<pre class="screen">csound -U envext examples/mary.wav</pre>
<p>
will produce the a text file containing the following:
</p>
<div class="literallayout">
<p><br />
0.000 0.000<br />
0.000 0.000<br />
0.250 0.000<br />
0.500 0.000<br />
0.750 0.000<br />
1.249 0.170<br />
1.499 0.269<br />
1.530 0.307<br />
1.872 0.263<br />
2.056 0.304<br />
2.294 0.241<br />
2.570 0.216<br />
2.761 0.178<br />
3.077 0.011<br />
3.251 0.001<br />
3.500 0.000<br />
</p>
</div>
<p>
Which shows the time for the peak amplitude within each measured window.
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp82080496"></a>
<h2>Credits</h2>
<p>Author: John ffitch</p>
<p>1995</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="csb64enc.html">Prev</a> </td>
<td width="20%" align="center">
<a accesskey="u" href="UtilityOther.html">Up</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="extractor.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">csb64enc </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> extractor</td>
</tr>
</table>
</div>
</body>
</html>
distrib
>
Mageia
>
5
>
x86_64
>
media
>
core-release
>
by-pkgid
>
b707d9a4ee443103660a75ccb6e51334
>
files
>
569
