<?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>tonex</title>
<link rel="stylesheet" href="csound.css" type="text/css" />
<meta name="generator" content="DocBook XSL Stylesheets V1.75.2" />
<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="tonek.html" title="tonek" />
<link rel="next" href="trandom.html" title="trandom" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">tonex</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="tonek.html">Prev</a> </td>
<th width="60%" align="center">Orchestra Opcodes and Operators</th>
<td width="20%" align="right"> <a accesskey="n" href="trandom.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry" title="tonex">
<a id="tonex"></a>
<div class="titlepage"></div>
<a id="IndexTonex" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">tonex</span>
</h2>
<p>tonex —
Emulates a stack of filters using the tone opcode.
</p>
</div>
<div class="refsect1" title="Description">
<a id="id3297406"></a>
<h2>Description</h2>
<p>
<span class="emphasis"><em>tonex</em></span> is equivalent to a filter consisting of more layers of <a class="link" href="tone.html" title="tone"><em class="citetitle">tone</em></a> with the same arguments, serially connected. Using a stack of a larger number of filters allows a sharper cutoff. They are faster than using a larger number instances in a Csound orchestra of the old opcodes, because only one initialization and k- cycle are needed at time and the audio loop falls entirely inside the cache memory of processor.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="id3298148"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>tonex</strong></span> asig, khp [, inumlayer] [, iskip]</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="id3298167"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>inumlayer</em></span> (optional) -- number of elements in the filter stack. Default value is 4.
</p>
<p>
<span class="emphasis"><em>iskip</em></span> (optional, default=0) -- initial disposition of internal data space. Since filtering incorporates a feedback loop of previous output, the initial status of the storage space used is significant. A zero value will clear the space; a non-zero value will allow previous information to remain. The default value is 0.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="id3298194"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>asig</em></span> -- input signal
</p>
<p>
<span class="emphasis"><em>khp</em></span> -- the response curve's half-power point. Half power is defined as peak power / root 2.
</p>
</div>
<div class="refsect1" title="See Also">
<a id="id3298216"></a>
<h2>See Also</h2>
<p>
<a class="link" href="atonex.html" title="atonex"><em class="citetitle">atonex</em></a>,
<a class="link" href="resonx.html" title="resonx"><em class="citetitle">resonx</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="id3298241"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Gabriel Maldonado (adapted by John ffitch)</td>
</tr>
<tr>
<td>Italy</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 3.49</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="tonek.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="trandom.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">tonek </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> trandom</td>
</tr>
</table>
</div>
</body>
</html>
