<?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>osciln</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="oscilikts.html" title="oscilikts" /> <link rel="next" href="oscils.html" title="oscils" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">osciln</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="oscilikts.html">Prev</a> </td> <th width="60%" align="center">Orchestra Opcodes and Operators</th> <td width="20%" align="right"> <a accesskey="n" href="oscils.html">Next</a></td> </tr> </table> <hr /> </div> <div class="refentry" title="osciln"> <a id="osciln"></a> <div class="titlepage"></div> <a id="IndexOsciln" class="indexterm"></a> <div class="refnamediv"> <h2> <span class="refentrytitle">osciln</span> </h2> <p>osciln — Accesses table values at a user-defined frequency. </p> </div> <div class="refsect1" title="Description"> <a id="idp33953496"></a> <h2>Description</h2> <p> Accesses table values at a user-defined frequency. This opcode can also be written as <a class="link" href="oscilx.html" title="oscilx"><em class="citetitle">oscilx</em></a>. </p> </div> <div class="refsect1" title="Syntax"> <a id="idp33964032"></a> <h2>Syntax</h2> <pre class="synopsis">ares <span class="command"><strong>osciln</strong></span> kamp, ifrq, ifn, itimes</pre> </div> <div class="refsect1" title="Initialization"> <a id="idp33965104"></a> <h2>Initialization</h2> <p> <span class="emphasis"><em>ifrq, itimes</em></span> -- rate and number of times through the stored table. </p> <p> <span class="emphasis"><em>ifn</em></span> -- function table number. </p> </div> <div class="refsect1" title="Performance"> <a id="idp33966408"></a> <h2>Performance</h2> <p> <span class="emphasis"><em>kamp</em></span> -- amplitude factor </p> <p> <span class="emphasis"><em>osciln</em></span> will sample several times through the stored table at a rate of <span class="emphasis"><em>ifrq</em></span> times per second, after which it will output zeros. Generates audio signals only, with output values scaled by <span class="emphasis"><em>kamp.</em></span> </p> </div> <div class="refsect1" title="Examples"> <a id="idp34002480"></a> <h2>Examples</h2> <p> Here is an example of the osciln opcode. It uses the file <a class="ulink" href="examples/osciln.csd" target="_top"><em class="citetitle">osciln.csd</em></a>. </p> <div class="example"> <a id="idp34003432"></a> <p class="title"> <strong>Example 534. Example of the osciln 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> -odac <span class="comment">;;;realtime audio out</span> <span class="comment">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span> <span class="comment">; For Non-realtime ouput leave only the line below:</span> <span class="comment">; -o osciln.wav -W ;;; for file output any platform</span> <span class="csdtag"></CsOptions></span> <span class="csdtag"><CsInstruments></span> <span class="ohdr">sr</span> <span class="op">=</span> 44100 <span class="ohdr">ksmps</span> <span class="op">=</span> 32 <span class="ohdr">nchnls</span> <span class="op">=</span> 2 <span class="ohdr">0dbfs</span> <span class="op">=</span> 1 gione <span class="ohdr">ftgen</span> 1, 0, 1024, 7, 0, 1, 1, 1024, 0 gitwo <span class="ohdr">ftgen</span> 2, 0, 1024, 7, 0, 512, 1, 512, 0 <span class="oblock">instr</span> 1 <span class="comment">;very simple waveguide system</span> ifn <span class="op">=</span> p4 ipitch <span class="op">=</span> p5 itimes <span class="op">=</span> p6 iperiod <span class="op">=</span> 1000<span class="op">/</span>ipitch afeed <span class="opc">init</span> 0 aimpl <span class="opc">osciln</span> 1, ipitch, ifn, itimes <span class="comment">;use as excitation signal</span> arefl <span class="opc">tone</span> aimpl <span class="op">+</span> afeed, 4000 aout <span class="opc">atone</span> arefl, 5000 afeed <span class="opc">vdelay</span> arefl, iperiod, 10 <span class="opc">outs</span> aout<span class="op">*</span>3, aout<span class="op">*</span>3 <span class="oblock">endin</span> <span class="csdtag"></CsInstruments></span> <span class="csdtag"><CsScore></span> <span class="stamnt">i</span> 1 0 4 1 110 1 <span class="comment">;use different tables,</span> <span class="stamnt">i</span> 1 5 4 2 110 1 <span class="comment">;& different pitch</span> <span class="stamnt">i</span> 1 10 4 1 110 10 <span class="comment">;& different number of times the table is read</span> <span class="stamnt">i</span> 1 15 4 2 110 10 <span class="stamnt">i</span> 1 20 6 1 880 1 <span class="stamnt">i</span> 1 25 3 2 880 1 <span class="stamnt">i</span> 1 30 3 1 880 10 <span class="stamnt">i</span> 1 35 3 2 880 10 <span class="stamnt">e</span> <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="idp34005704"></a> <h2>See Also</h2> <p> <a class="link" href="table.html" title="table"><em class="citetitle">table</em></a>, <a class="link" href="tablei.html" title="tablei"><em class="citetitle">tablei</em></a>, <a class="link" href="table3.html" title="table3"><em class="citetitle">table3</em></a>, <a class="link" href="oscil1.html" title="oscil1"><em class="citetitle">oscil1</em></a>, <a class="link" href="oscil1i.html" title="oscil1i"><em class="citetitle">oscil1i</em></a> </p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="oscilikts.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="oscils.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">oscilikts </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> oscils</td> </tr> </table> </div> </body> </html>