<?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>marimba</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="OpcodesTop.html" title="Orchestra Opcodes and Operators" /> <link rel="prev" href="maparray.html" title="maparray" /> <link rel="next" href="massign.html" title="massign" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">marimba</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="maparray.html">Prev</a> </td> <th width="60%" align="center">Orchestra Opcodes and Operators</th> <td width="20%" align="right"> <a accesskey="n" href="massign.html">Next</a></td> </tr> </table> <hr /> </div> <div class="refentry"> <a id="marimba"></a> <div class="titlepage"></div> <a id="IndexMarimba" class="indexterm"></a> <div class="refnamediv"> <h2> <span class="refentrytitle">marimba</span> </h2> <p>marimba — Physical model related to the striking of a wooden block. </p> </div> <div class="refsect1"> <a id="idm281472916385640"></a> <h2>Description</h2> <p> Audio output is a tone related to the striking of a wooden block as found in a marimba. The method is a physical model developed from Perry Cook but re-coded for Csound. </p> </div> <div class="refsect1"> <a id="idm281472916325400"></a> <h2>Syntax</h2> <pre class="synopsis">ares <span class="command"><strong>marimba</strong></span> kamp, kfreq, ihrd, ipos, imp, kvibf, kvamp, ivibfn, idec \ [, idoubles] [, itriples]</pre> </div> <div class="refsect1"> <a id="idm281472916323000"></a> <h2>Initialization</h2> <p> <span class="emphasis"><em>ihrd</em></span> -- the hardness of the stick used in the strike. A range of 0 to 1 is used. 0.5 is a suitable value. </p> <p> <span class="emphasis"><em>ipos</em></span> -- where the block is hit, in the range 0 to 1. </p> <p> <span class="emphasis"><em>imp</em></span> -- a table of the strike impulses. The file <a class="ulink" href="examples/marmstk1.wav" target="_top"><em class="citetitle">marmstk1.wav</em></a> is a suitable function from measurements and can be loaded with a <a class="link" href="GEN01.html" title="GEN01"><em class="citetitle">GEN01</em></a> table. It is also available at <a class="ulink" href="ftp://ftp.cs.bath.ac.uk/pub/dream/documentation/sounds/modelling/" target="_top"><em class="citetitle">ftp://ftp.cs.bath.ac.uk/pub/dream/documentation/sounds/modelling/</em></a>. </p> <p> <span class="emphasis"><em>ivfn</em></span> -- shape of vibrato, usually a sine table, created by a function </p> <p> <span class="emphasis"><em>idec</em></span> -- time before end of note when damping is introduced </p> <p> <span class="emphasis"><em>idoubles</em></span> (optional) -- percentage of double strikes. Default is 40%. </p> <p> <span class="emphasis"><em>itriples</em></span> (optional) -- percentage of triple strikes. Default is 20%. </p> </div> <div class="refsect1"> <a id="idm281472916312664"></a> <h2>Performance</h2> <p> <span class="emphasis"><em>kamp</em></span> -- Amplitude of note. </p> <p> <span class="emphasis"><em>kfreq</em></span> -- Frequency of note played. </p> <p> <span class="emphasis"><em>kvibf</em></span> -- frequency of vibrato in Hertz. Suggested range is 0 to 12 </p> <p> <span class="emphasis"><em>kvamp</em></span> -- amplitude of the vibrato </p> </div> <div class="refsect1"> <a id="idm281472916308168"></a> <h2>Examples</h2> <p> Here is an example of the marimba opcode. It uses the file <a class="ulink" href="examples/marimba.csd" target="_top"><em class="citetitle">marimba.csd</em></a>, and <a class="ulink" href="examples/marmstk1.wav" target="_top"><em class="citetitle">marmstk1.wav</em></a>. </p> <div class="example"> <a id="idm281472916305464"></a> <p class="title"> <strong>Example 519. Example of the marimba 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> <div class="refsect1"> <a id="idm281472740964312"></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> <span class="c1">; Audio out Audio in No messages</span> -odac -iadc -d <span class="c1">;;;RT audio I/O</span> <span class="c1">; For Non-realtime ouput leave only the line below:</span> <span class="c1">; -o marimba.wav -W ;;; for file output any platform</span> <span class="nt"></CsOptions></span> <span class="nt"><CsInstruments></span> <span class="c1">; Initialize the global variables.</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">128</span> <span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span> <span class="c1">; Instrument #1.</span> <span class="kd">instr</span> <span class="nf">1</span> i<span class="n">freq</span> <span class="o">=</span> <span class="nb">cpspch</span><span class="p">(</span><span class="nb">p4</span><span class="p">)</span> i<span class="n">hrd</span> <span class="o">=</span> <span class="mf">0.1</span> i<span class="n">pos</span> <span class="o">=</span> <span class="mf">0.561</span> i<span class="n">mp</span> <span class="o">=</span> <span class="mi">1</span> k<span class="n">vibf</span> <span class="o">=</span> <span class="mf">6.0</span> k<span class="n">vamp</span> <span class="o">=</span> <span class="mf">0.05</span> i<span class="n">vibfn</span> <span class="o">=</span> <span class="mi">2</span> i<span class="n">dec</span> <span class="o">=</span> <span class="mf">0.6</span> a<span class="n">1</span> <span class="nb">marimba</span> <span class="mi">20000</span><span class="p">,</span> i<span class="n">freq</span><span class="p">,</span> i<span class="n">hrd</span><span class="p">,</span> i<span class="n">pos</span><span class="p">,</span> i<span class="n">mp</span><span class="p">,</span> k<span class="n">vibf</span><span class="p">,</span> k<span class="n">vamp</span><span class="p">,</span> i<span class="n">vibfn</span><span class="p">,</span> i<span class="n">dec</span><span class="p">,</span> <span class="mi">20</span><span class="p">,</span> <span class="mi">10</span> <span class="nb">outs</span> a<span class="n">1</span><span class="p">,</span> a<span class="n">1</span> <span class="kd">endin</span> <span class="nt"></CsInstruments></span> <span class="nt"><CsScore></span> <span class="c1">; Table #1, the "marmstk1.wav" audio file.</span> <span class="nb">f</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">256</span> <span class="mi">1</span> <span class="s">"marmstk1.wav"</span> <span class="mi">0</span> <span class="mi">0</span> <span class="mi">0</span> <span class="c1">; Table #2, a sine wave for the vibrato.</span> <span class="nb">f</span> <span class="mi">2</span> <span class="mi">0</span> <span class="mi">128</span> <span class="mi">10</span> <span class="mi">1</span> <span class="c1">; Play Instrument #1 for one second.</span> <span class="nb">i</span> <span class="mi">1</span> <span class="mi">0</span> <span class="mi">1</span> <span class="mf">8.09</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.5</span> <span class="mf">8.00</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.5</span> <span class="mf">7.00</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.25</span> <span class="mf">8.02</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.25</span> <span class="mf">8.01</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.25</span> <span class="mf">7.09</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.25</span> <span class="mf">8.02</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.25</span> <span class="mf">8.01</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.25</span> <span class="mf">7.09</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.3333</span> <span class="mf">8.09</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.3333</span> <span class="mf">8.02</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.3334</span> <span class="mf">8.01</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.25</span> <span class="mf">8.00</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.3333</span> <span class="mf">8.09</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.3333</span> <span class="mf">8.02</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.25</span> <span class="mf">8.01</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.3333</span> <span class="mf">7.00</span> <span class="nb">i</span> <span class="mi">1</span> <span class="o">+</span> <span class="mf">0.3334</span> <span class="mf">6.00</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" /> </p> </div> <div class="refsect1"> <a id="idm281472916301240"></a> <h2>See Also</h2> <p> <a class="link" href="vibes.html" title="vibes"><em class="citetitle">vibes</em></a> </p> </div> <div class="refsect1"> <a id="idm281472916299128"></a> <h2>Credits</h2> <p> </p> <table border="0" summary="Simple list" class="simplelist"> <tr> <td>Author: John ffitch (after Perry Cook)</td> </tr> <tr> <td>University of Bath, Codemist Ltd.</td> </tr> <tr> <td>Bath, UK</td> </tr> </table> <p> </p> <p>New in Csound version 3.47</p> </div> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="maparray.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="massign.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">maparray </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> massign</td> </tr> </table> </div> </body> </html>