<?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>Expressions</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="OrchTop.html" title="Syntax of the Orchestra" /> <link rel="prev" href="OrchKvar.html" title="Types, Constants and Variables" /> <link rel="next" href="OrchDirFiles.html" title="Directories and Files" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">Expressions</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="OrchKvar.html">Prev</a> </td> <th width="60%" align="center">Syntax of the Orchestra</th> <td width="20%" align="right"> <a accesskey="n" href="OrchDirFiles.html">Next</a></td> </tr> </table> <hr /> </div> <div class="section"> <div class="titlepage"> <div> <div> <h2 class="title" style="clear: both"><a id="OrchExpress"></a>Expressions</h2> </div> </div> </div> <p> Expressions may be composed to any depth. Each part of an expression is evaluated at its own proper rate. For instance, if the terms within a sub-expression all change at the control rate or slower, the sub-expression will be evaluated only at the control rate; that result might then be used in an audio-rate evaluation. For example, in </p> <div class="informalexample"> <pre class="programlisting"> k1 <span class="op">+</span> <span class="opc">abs</span>(<span class="opc">int</span>(p5) <span class="op">+</span> <span class="opc">frac</span>(p5) <span class="op">*</span> 100<span class="op">/</span>12 + <span class="opc">sqrt</span>(k1))</pre> </div> <p> </p> <p> the 100/12 would be evaluated at orch init, the p5 expressions evaluated at note i-time, and the remainder of the expression evaluated every k-period. The whole might occur in a unit generator argument position, or be part of an assignment statement. </p> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="OrchKvar.html">Prev</a> </td> <td width="20%" align="center"> <a accesskey="u" href="OrchTop.html">Up</a> </td> <td width="40%" align="right"> <a accesskey="n" href="OrchDirFiles.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">Types, Constants and Variables </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> Directories and Files</td> </tr> </table> </div> </body> </html>