<?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>ceps</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="centroid.html" title="centroid" />
<link rel="next" href="cepsinv.html" title="cepsinv" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">ceps</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="centroid.html">Prev</a> </td>
<th width="60%" align="center">Orchestra Opcodes and Operators</th>
<td width="20%" align="right"> <a accesskey="n" href="cepsinv.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry">
<a id="ceps"></a>
<div class="titlepage"></div>
<a id="IndexCeps" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">ceps</span>
</h2>
<p>ceps —
Calculate the cepstrum of an array input, optionally liftering coefficients.
</p>
</div>
<div class="refsect1">
<a id="idm281472947850440"></a>
<h2>Description</h2>
<p>
</p>
</div>
<div class="refsect1">
<a id="idm281472947849256"></a>
<h2>Syntax</h2>
<pre class="synopsis">keps[] <span class="command"><strong>ceps</strong></span> kmags[][, icoefs]</pre>
</div>
<div class="refsect1">
<a id="idm281472947786968"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>icoefs</em></span> -- the number of retained
coefficients in the cepstrum output. By default, no coefficients
are liftered.
</p>
</div>
<div class="refsect1">
<a id="idm281472947785224"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>keps[]</em></span> -- the cepstrum output, an array of
size N+1, where N is a power of two.
</p>
<p>
<span class="emphasis"><em>kmags[]</em></span> -- an input array containing N+1 magnitudes.
</p>
</div>
<div class="refsect1">
<a id="idm281472947782760"></a>
<h2>Examples</h2>
<p>
Here is an example of the use of the <span class="emphasis"><em>ceps</em></span> opcode. It uses the file <a class="ulink" href="examples/ceps.csd" target="_top"><em class="citetitle">ceps.csd</em></a>.
</p>
<div class="example">
<a id="idm281472947780456"></a>
<p class="title">
<strong>Example 112. Example of the <span class="emphasis"><em>ceps</em></span> 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="idm281472781424680"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="kd">instr</span> <span class="nf">1</span>
a<span class="n">1</span> <span class="nb">diskin</span> <span class="s">"fox.wav"</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span class="mi">0</span><span class="p">,</span><span class="mi">1</span>
k<span class="n">1</span> <span class="nb">randh</span> <span class="mi">80</span><span class="p">,</span> <span class="mf">2.5</span>
a<span class="n">2</span> <span class="nb">vco2</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">220</span><span class="o">+</span>k<span class="n">1</span>
k<span class="n">fsig</span><span class="p">[]</span> <span class="nb">init</span> <span class="mi">1026</span>
<span class="n">fsig</span> <span class="nb">pvsanal</span> a<span class="n">1</span><span class="p">,</span><span class="mi">1024</span><span class="p">,</span><span class="mi">256</span><span class="p">,</span><span class="mi">1024</span><span class="p">,</span><span class="mi">1</span>
<span class="n">fsig2</span> <span class="nb">pvsanal</span> a<span class="n">2</span><span class="p">,</span><span class="mi">1024</span><span class="p">,</span><span class="mi">256</span><span class="p">,</span><span class="mi">1024</span><span class="p">,</span><span class="mi">1</span>
k<span class="n">f</span> <span class="nb">pvs2tab</span> k<span class="n">fsig</span><span class="p">,</span><span class="n">fsig</span>
k<span class="n">eps</span><span class="p">[]</span> <span class="nb">ceps</span> <span class="nb">c2r</span><span class="p">(</span>k<span class="n">fsig</span><span class="p">),</span><span class="mi">30</span>
k<span class="n">env</span><span class="p">[]</span> <span class="nb">cepsinv</span> k<span class="n">eps</span>
<span class="n">fenv</span> <span class="nb">tab2pvs</span> <span class="nb">r2c</span><span class="p">(</span>k<span class="n">env</span><span class="p">)</span>
<span class="n">fvoc</span> <span class="nb">pvsfilter</span> <span class="n">fsig2</span><span class="p">,</span> <span class="n">fenv</span><span class="p">,</span> <span class="mi">1</span>
a<span class="n">sig</span> <span class="nb">pvsynth</span> <span class="n">fvoc</span>
<span class="nb">out</span> a<span class="n">sig</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">0</span> <span class="mi">60</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="idm281472947775736"></a>
<h2>See Also</h2>
<p>
<a class="link" href="pvsanal.html" title="pvsanal"><em class="citetitle">pvsanal</em></a>,
<a class="link" href="pvsynth.html" title="pvsynth"><em class="citetitle">pvsynth</em></a>,
<a class="link" href="pvsadsyn.html" title="pvsadsyn"><em class="citetitle">pvsadsyn</em></a>,
<a class="link" href="pvspitch.html" title="pvspitch"><em class="citetitle">pvspitch</em></a>
</p>
</div>
<div class="refsect1">
<a id="idm281472947770632"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Victor Lazzarini</td>
</tr>
<tr>
<td>2014</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="centroid.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="cepsinv.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">centroid </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> cepsinv</td>
</tr>
</table>
</div>
</body>
</html>
distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-release
>
by-pkgid
>
5fcfcb7517038d1f44ab4e478e6e61fa
>
files
>
431
