<?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>oscilikt</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="OpcodesTop.html" title="Orchestra Opcodes and Operators" />
<link rel="prev" href="oscili.html" title="oscili" />
<link rel="next" href="osciliktp.html" title="osciliktp" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">oscilikt</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="oscili.html">Prev</a> </td>
<th width="60%" align="center">Orchestra Opcodes and Operators</th>
<td width="20%" align="right"> <a accesskey="n" href="osciliktp.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry" title="oscilikt">
<a id="oscilikt"></a>
<div class="titlepage"></div>
<a id="IndexOscilikt" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">oscilikt</span>
</h2>
<p>oscilikt —
A linearly interpolated oscillator that allows changing the table number at k-rate.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp33849608"></a>
<h2>Description</h2>
<p>
<span class="emphasis"><em>oscilikt</em></span> is very similar to <a class="link" href="oscili.html" title="oscili"><em class="citetitle">oscili</em></a>, but allows changing the table number at k-rate. It is slightly slower than <span class="emphasis"><em>oscili</em></span> (especially with high control rate), although also more accurate as it uses a 31-bit phase accumulator, as opposed to the 24-bit one used by <span class="emphasis"><em>oscili</em></span>.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp33860928"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>oscilikt</strong></span> xamp, xcps, kfn [, iphs] [, istor]</pre>
<pre class="synopsis">kres <span class="command"><strong>oscilikt</strong></span> kamp, kcps, kfn [, iphs] [, istor]</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp33862832"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>iphs</em></span> (optional, defaults to 0) -- initial phase in the range 0 to 1. Other values are wrapped to the allowed range.
</p>
<p>
<span class="emphasis"><em>istor</em></span> (optional, defaults to 0) -- skip initialization.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp33899008"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kamp</em></span>, <span class="emphasis"><em>xamp</em></span> -- amplitude.
</p>
<p>
<span class="emphasis"><em>kcps</em></span>, <span class="emphasis"><em>xcps</em></span> -- frequency in Hz. Zero and negative values are allowed. However, the absolute value must be less than <a class="link" href="sr.html" title="sr"><em class="citetitle">sr</em></a> (and recommended to be less than <span class="emphasis"><em>sr/</em></span>2).
</p>
<p>
<span class="emphasis"><em>kfn</em></span> -- function table number. Can be varied at control rate (useful to <span class="quote">“<span class="quote">morph</span>”</span> waveforms, or select from a set of band-limited tables generated by <a class="link" href="GEN30.html" title="GEN30"><em class="citetitle">GEN30</em></a>).
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp33902800"></a>
<h2>Examples</h2>
<p>
Here is an example of the oscilikt opcode. It uses the file <a class="ulink" href="examples/oscilikt.csd" target="_top"><em class="citetitle">oscilikt.csd</em></a>.
</p>
<div class="example">
<a id="idp33903792"></a>
<p class="title">
<strong>Example 531. Example of the oscilikt 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>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out Audio in No messages</span>
-odac -iadc -d <span class="comment">;;;RT audio I/O</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o oscilikt.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="comment">; Initialize the global variables.</span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">kr</span> <span class="op">=</span> 4410
<span class="ohdr">ksmps</span> <span class="op">=</span> 10
<span class="ohdr">nchnls</span> <span class="op">=</span> 1
<span class="comment">; Instrument #1.</span>
<span class="oblock">instr</span> 1
<span class="comment">; Generate a uni-polar (0-1) square wave.</span>
kamp1 <span class="opc">init</span> 1
kcps1 <span class="opc">init</span> 2
itype <span class="op">=</span> 3
ksquare <span class="opc">lfo</span> kamp1, kcps1, itype
<span class="comment">; Use the square wave to switch between Tables #1 and #2.</span>
kamp2 <span class="opc">init</span> 20000
kcps2 <span class="opc">init</span> 220
kfn <span class="op">=</span> ksquare <span class="op">+</span> 1
a1 <span class="opc">oscilikt</span> kamp2, kcps2, kfn
<span class="opc">out</span> a1
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Table #1, a sine waveform.</span>
<span class="stamnt">f</span> 1 0 4096 10 0 1
<span class="comment">; Table #2: a sawtooth wave</span>
<span class="stamnt">f</span> 2 0 3 -2 1 0 -1
<span class="comment">; Play Instrument #1 for two seconds.</span>
<span class="stamnt">i</span> 1 0 2
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1" title="See Also">
<a id="idp33906072"></a>
<h2>See Also</h2>
<p>
<a class="link" href="osciliktp.html" title="osciliktp"><em class="citetitle">osciliktp</em></a> and
<a class="link" href="oscilikts.html" title="oscilikts"><em class="citetitle">oscilikts</em></a>.
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp33907640"></a>
<h2>Credits</h2>
<p>Author: Istvan Varga</p>
<p>Example written by Kevin Conder.</p>
<p>New in version 4.22</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="oscili.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="osciliktp.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">oscili </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> osciliktp</td>
</tr>
</table>
</div>
</body>
</html>
distrib
>
Mageia
>
5
>
x86_64
>
media
>
core-release
>
by-pkgid
>
b707d9a4ee443103660a75ccb6e51334
>
files
>
2293
