<?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>GEN23</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="ScoregensTop.html" title="Score Statements and GEN Routines" />
<link rel="prev" href="GEN21.html" title="GEN21" />
<link rel="next" href="GEN24.html" title="GEN24" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">GEN23</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="GEN21.html">Prev</a> </td>
<th width="60%" align="center">Score Statements and GEN Routines</th>
<td width="20%" align="right"> <a accesskey="n" href="GEN24.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="refentry">
<a id="GEN23"></a>
<div class="titlepage"></div>
<a id="IndexGEN23" class="indexterm"></a>
<div class="refnamediv">
<h2>
<span class="refentrytitle">GEN23</span>
</h2>
<p>GEN23 —
Reads numeric values from a text file.
</p>
</div>
<div class="refsect1">
<a id="idm281472818944824"></a>
<h2>Description</h2>
<p>
This subroutine reads numeric values from an external ASCII file.
</p>
</div>
<div class="refsect1">
<a id="idm281472818901240"></a>
<h2>Syntax</h2>
<pre class="synopsis"><span class="command"><strong>f</strong></span> # time size -23 "filename.txt"</pre>
</div>
<div class="refsect1">
<a id="idm281472818899208"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>"filename.txt"</em></span> -- numeric values contained in "filename.txt" (which indicates the complete pathname of the character file to be read), can be separated by spaces, tabs, newline characters or commas.
</p>
<p>
<span class="emphasis"><em>size</em></span> -- number of points in the table. Must be a power of 2 , power of 2 + 1, or zero. If <span class="emphasis"><em>size</em></span> = 0, table size is determined by the number of numeric values in <span class="emphasis"><em>filename.txt</em></span>. (New in Csound version 3.57)
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note: Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Note]" src="images/note.png" />
</td>
<th align="left">Note</th>
</tr>
<tr>
<td align="left" valign="top">
<p>
All characters following ';', '#' (comment) or '<' (XML
tag from version 6.04) are ignored until next line (numbers too).
</p>
</td>
</tr>
</table>
</div>
</div>
<div class="refsect1">
<a id="idm281472818893816"></a>
<h2>Examples</h2>
<p>
Here is an example of the GEN23 generator. It uses the file <a class="ulink" href="examples/gen23.csd" target="_top"><em class="citetitle">gen23.csd</em></a> and <a class="ulink" href="examples/spectrum.txt" target="_top"> <em class="citetitle">spectrum.txt</em></a>.
</p>
<div class="example">
<a id="idm281472818890984"></a>
<p class="title">
<strong>Example 1203. Example of the GEN23 generator.</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>
<div class="refsect1">
<a id="idm281472682022664"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="c1">; Select audio/midi flags here according to platform</span>
-odac <span class="c1">;;;realtime audio out</span>
<span class="c1">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o gen23.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">32</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span>
<span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span>
<span class="c1">;"spectrum.txt" is created by the spectrum plotter of Audacity (set at size 128), using "fox.wav".</span>
<span class="kd">instr</span> <span class="nf">1</span> <span class="c1">;performs additive synthesis based on spectrum.txt</span>
i<span class="n">ndx</span> <span class="o">=</span><span class="mi">0</span> <span class="c1">;start reading at first value</span>
<span class="nl">loop</span><span class="p">:</span>
i<span class="n">freq</span> <span class="nb">tab_i</span> i<span class="n">ndx</span><span class="p">,</span> <span class="mi">2</span> <span class="c1">;take odd values of list (= frequency)</span>
i<span class="n">amp</span> <span class="nb">tab_i</span> i<span class="n">ndx</span><span class="o">+</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span> <span class="c1">;take even values of list (= amplitude)</span>
<span class="nb">event_i</span> <span class="s">"i"</span><span class="p">,</span> <span class="mi">10</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="nb">p3</span><span class="p">,</span> i<span class="n">amp</span><span class="p">,</span> i<span class="n">freq</span> <span class="c1">;use "event_i" to trigger instr. 10 </span>
<span class="k">loop_lt</span> i<span class="n">ndx</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">126</span><span class="p">,</span> <span class="nl">loop</span> <span class="c1">;use all 128 frequency and amplitude values</span>
<span class="kd">endin</span>
<span class="kd">instr</span> <span class="nf">10</span> <span class="c1">;generate sound</span>
i<span class="n">amp</span> <span class="o">=</span> <span class="nb">p4</span>
i<span class="n">freq</span> <span class="o">=</span> <span class="nb">p5</span>
a<span class="n">sig</span> <span class="nb">poscil</span> <span class="nb">ampdb</span><span class="p">(</span>i<span class="n">amp</span><span class="p">),</span> i<span class="n">freq</span><span class="p">,</span> <span class="mi">1</span>
a<span class="n">sig</span> <span class="nb">linen</span> a<span class="n">sig</span><span class="p">,</span> <span class="mf">.01</span><span class="p">,</span> <span class="nb">p3</span><span class="p">,</span> <span class="nb">p2</span>
<span class="nb">outs</span> a<span class="n">sig</span><span class="p">,</span> a<span class="n">sig</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">f</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">16384</span> <span class="mi">10</span> <span class="mi">1</span> <span class="c1">;sine wave</span>
<span class="nb">f</span> <span class="mi">2</span> <span class="mi">0</span> <span class="mi">128</span> <span class="o">-</span><span class="mi">23</span> <span class="s">"spectrum.txt"</span> <span class="c1">;"spectrum.txt" can be found in /manual/examples</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">0</span> <span class="mi">2</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
</div>
</div>
<p><br class="example-break" />
<span class="phrase">This is the diagram of the waveform of the GEN23 routine, as used in the example:</span>
</p>
<div class="mediaobject">
<img src="images/gen23.png" alt="f 2 0 128 -23 "spectrum.txt" - not normalized" />
<div class="caption">
<p>f 2 0 128 -23 "spectrum.txt" - not normalized</p>
</div>
</div>
<p>
</p>
</div>
<div class="refsect1">
<a id="idm281472818882664"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Gabriel Maldonado</td>
</tr>
<tr>
<td>Italy</td>
</tr>
<tr>
<td>February, 1998</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 3.47. Comments starting with '#' are
ignored from Csound version 5.12.</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="GEN21.html">Prev</a> </td>
<td width="20%" align="center">
<a accesskey="u" href="ScoregensTop.html">Up</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="GEN24.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">GEN21 </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> GEN24</td>
</tr>
</table>
</div>
</body>
</html>
distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-release
>
by-pkgid
>
5fcfcb7517038d1f44ab4e478e6e61fa
>
files
>
146
