<?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>lposcila</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="lposcil3.html" title="lposcil3" /> <link rel="next" href="lposcilsa.html" title="lposcilsa" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">lposcila</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="lposcil3.html">Prev</a> </td> <th width="60%" align="center">Orchestra Opcodes and Operators</th> <td width="20%" align="right"> <a accesskey="n" href="lposcilsa.html">Next</a></td> </tr> </table> <hr /> </div> <div class="refentry" title="lposcila"> <a id="lposcila"></a> <div class="titlepage"></div> <a id="IndexLposcila" class="indexterm"></a> <div class="refnamediv"> <h2> <span class="refentrytitle">lposcila</span> </h2> <p>lposcila — Read sampled sound from a table with looping and high precision. </p> </div> <div class="refsect1" title="Description"> <a id="idp29689976"></a> <h2>Description</h2> <p> <span class="emphasis"><em>lposcila</em></span> reads sampled sound from a table with looping and high precision. </p> </div> <div class="refsect1" title="Syntax"> <a id="idp29690856"></a> <h2>Syntax</h2> <pre class="synopsis">ar <span class="command"><strong>lposcila</strong></span> aamp, kfreqratio, kloop, kend, ift [,iphs] </pre> </div> <div class="refsect1" title="Initialization"> <a id="idp29701176"></a> <h2>Initialization</h2> <p> <span class="emphasis"><em>ift</em></span> -- function table number </p> <p> <span class="emphasis"><em>iphs</em></span> -- initial phase (in samples) </p> </div> <div class="refsect1" title="Performance"> <a id="idp29702448"></a> <h2>Performance</h2> <p> <span class="emphasis"><em>ar</em></span> -- output signal </p> <p> <span class="emphasis"><em>aamp</em></span> -- amplitude </p> <p> <span class="emphasis"><em>kfreqratio</em></span> -- multiply factor of table frequency (for example: 1 = original frequency, 1.5 = a fifth up , .5 = an octave down) </p> <p> <span class="emphasis"><em>kloop</em></span> -- start loop point (in samples) </p> <p> <span class="emphasis"><em>kend</em></span> -- end loop point (in samples) </p> <p> <span class="emphasis"><em>lposcila</em></span> is the same as <a class="link" href="lposcil.html" title="lposcil"><em class="citetitle">lposcil</em></a>, but has an audio-rate amplitude argument (instead of k-rate) to allow fast envelope transients. </p> </div> <div class="refsect1" title="Examples"> <a id="idp29737224"></a> <h2>Examples</h2> <p> Here is an example of the lposcila opcode. It uses the file <a class="ulink" href="examples/lposcila.csd" target="_top"><em class="citetitle">lposcila.csd</em></a>. </p> <div class="example"> <a id="idp29738192"></a> <p class="title"> <strong>Example 423. Example of the lposcila 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 lposcila.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 <span class="oblock">instr</span> 1 kcps <span class="op">=</span> 1.3 <span class="comment">;a 3d up</span> kloop <span class="op">=</span> 0 <span class="comment">;loop start time in samples</span> kend <span class="op">=</span> 10000 <span class="comment">;loop end time in samples</span> aenv <span class="opc">expsega</span> 0.01, 0.1, 1, 0.1, 0.5, 0.5, 0.01 <span class="comment">;envelope with fast and short segment</span> asig <span class="opc">lposcila</span> aenv, kcps, kloop, kend, 1 <span class="comment">;use it for amplitude</span> <span class="opc">outs</span> asig, asig <span class="oblock">endin</span> <span class="csdtag"></CsInstruments></span> <span class="csdtag"><CsScore></span> <span class="comment">; Its table size is deferred,</span> <span class="comment">; and format taken from the soundfile header.</span> <span class="stamnt">f</span> 1 0 0 1 "beats.wav" 0 0 0 <span class="comment">; Play Instrument #1 for 6 seconds.</span> <span class="comment">; This will loop the drum pattern several times.</span> <span class="stamnt">i</span> 1 0 2 <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="idp29740472"></a> <h2>See Also</h2> <p> <a class="link" href="lposcil.html" title="lposcil"><em class="citetitle">lposcil</em></a>, <a class="link" href="lposcilsa.html" title="lposcilsa"><em class="citetitle">lposcilsa</em></a>, <a class="link" href="lposcilsa2.html" title="lposcilsa2"><em class="citetitle">lposcilsa2</em></a> </p> </div> <div class="refsect1" title="Credits"> <a id="idp29742448"></a> <h2>Credits</h2> <p>Author: Gabriel Maldonado</p> <p>New in version 5.06</p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="lposcil3.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="lposcilsa.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">lposcil3 </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> lposcilsa</td> </tr> </table> </div> </body> </html>