<?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>delay1</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="delay.html" title="delay" /> <link rel="next" href="delayk.html" title="delayk" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">delay1</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="delay.html">Prev</a> </td> <th width="60%" align="center">Orchestra Opcodes and Operators</th> <td width="20%" align="right"> <a accesskey="n" href="delayk.html">Next</a></td> </tr> </table> <hr /> </div> <div class="refentry" title="delay1"> <a id="delay1"></a> <div class="titlepage"></div> <a id="IndexDelay1" class="indexterm"></a> <div class="refnamediv"> <h2> <span class="refentrytitle">delay1</span> </h2> <p>delay1 — Delays an input signal by one sample. </p> </div> <div class="refsect1" title="Description"> <a id="idp17793936"></a> <h2>Description</h2> <p> Delays an input signal by one sample. </p> </div> <div class="refsect1" title="Syntax"> <a id="idp17794584"></a> <h2>Syntax</h2> <pre class="synopsis">ares <span class="command"><strong>delay1</strong></span> asig [, iskip]</pre> </div> <div class="refsect1" title="Initialization"> <a id="idp17804952"></a> <h2>Initialization</h2> <p> <span class="emphasis"><em>iskip</em></span> (optional, default=0) -- initial disposition of delay-loop data space (see <a class="link" href="reson.html" title="reson"><em class="citetitle">reson</em></a>). The default value is 0. </p> </div> <div class="refsect1" title="Performance"> <a id="idp17806312"></a> <h2>Performance</h2> <p> <span class="emphasis"><em>delay1</em></span> is a special form of delay that serves to delay the audio signal <span class="emphasis"><em>asig</em></span> by just one sample. It is thus functionally equivalent to the <a class="link" href="delay.html" title="delay"><em class="citetitle">delay</em></a> opcode but is more efficient in both time and space. This unit is particularly useful in the fabrication of generalized non-recursive filters. </p> </div> <div class="refsect1" title="Examples"> <a id="idp17808088"></a> <h2>Examples</h2> <p> Here is an example of the delay and delay1 opcodes. It uses the file <a class="ulink" href="examples/delay1.csd" target="_top"><em class="citetitle">delay1.csd</em></a>. </p> <div class="example"> <a id="idp17809072"></a> <p class="title"> <strong>Example 160. Example of the delay1 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 delay.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> 2 <span class="comment">; Instrument #1 -- Silence on one channel</span> <span class="oblock">instr</span> 1 <span class="comment">; Make a basic sound.</span> abeep <span class="opc">vco</span> 20000, 440, 1 <span class="comment">; Delay the beep by 1 sample.</span> idlt <span class="op">=</span> 1<span class="op">/</span><span class="ohdr">sr</span> adel <span class="opc">delay</span> abeep, idlt adel1 <span class="opc">delay1</span> abeep <span class="comment">; Send the beep to the left speaker and</span> <span class="comment">; the difference in the delayes to the right speaker.</span> <span class="opc">outs</span> abeep, adel<span class="op">-</span>adel1 <span class="oblock">endin</span> <span class="csdtag"></CsInstruments></span> <span class="csdtag"><CsScore></span> <span class="comment">; Table #1, a sine wave.</span> <span class="stamnt">f</span> 1 0 16384 10 1 <span class="comment">; Play Instrument #1.</span> <span class="stamnt">i</span> 1 0.0 1 <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="idp17842344"></a> <h2>See Also</h2> <p> <a class="link" href="delay.html" title="delay"><em class="citetitle">delay</em></a>, <a class="link" href="delayr.html" title="delayr"><em class="citetitle">delayr</em></a>, <a class="link" href="delayw.html" title="delayw"><em class="citetitle">delayw</em></a> </p> </div> <div class="refsect1" title="Credits"> <a id="idp17844304"></a> <h2>Credits</h2> <p>Author: Barry Vercoe</p> <p>Example written by John ffitch.</p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="delay.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="delayk.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">delay </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> delayk</td> </tr> </table> </div> </body> </html>