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<h2>
<span class="refentrytitle">wgpluck2</span>
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<p>wgpluck2 —
Physical model of the plucked string.
</p>
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<div class="refsect1" title="Description">
<a id="idp53915704"></a>
<h2>Description</h2>
<p>
<span class="emphasis"><em>wgpluck2</em></span> is an implementation of the physical model of the plucked string, with control over the pluck point, the pickup point and the filter. Based on the Karplus-Strong algorithm.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp53916520"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>wgpluck2</strong></span> iplk, kamp, icps, kpick, krefl</pre>
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<div class="refsect1" title="Initialization">
<a id="idp53927392"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>iplk</em></span> -- The point of pluck is <span class="emphasis"><em>iplk</em></span>, which is a fraction of the way up the string (0 to 1). A pluck point of zero means no initial pluck.
</p>
<p>
<span class="emphasis"><em>icps</em></span> -- The string plays at <span class="emphasis"><em>icps</em></span> pitch.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp53964688"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kamp</em></span> -- Amplitude of note.
</p>
<p>
<span class="emphasis"><em>kpick</em></span> -- Proportion of the way along the string to sample the output.
</p>
<p>
<span class="emphasis"><em>krefl</em></span> -- the coefficient of reflection, indicating the lossiness and the rate of decay. It must be strictly between 0 and 1 (it will complain about both 0 and 1).
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp53966880"></a>
<h2>Examples</h2>
<p>
Here is an example of the wgpluck2 opcode. It uses the file <a class="ulink" href="examples/wgpluck2.csd" target="_top"><em class="citetitle">wgpluck2.csd</em></a>.
</p>
<div class="example">
<a id="idp53967872"></a>
<p class="title">
<strong>Example 995. Example of the wgpluck2 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 wgpluck2.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> 1
<span class="comment">; Instrument #1.</span>
<span class="oblock">instr</span> 1
iplk <span class="op">=</span> 0.75
kamp <span class="op">=</span> 30000
icps <span class="op">=</span> 220
kpick <span class="op">=</span> 0.75
krefl <span class="op">=</span> 0.5
apluck <span class="opc">wgpluck2</span> iplk, kamp, icps, kpick, krefl
<span class="opc">out</span> apluck
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="comment">; Play Instrument #1 for two seconds.</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>
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<p><br class="example-break" />
</p>
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<div class="refsect1" title="See Also">
<a id="idp53970184"></a>
<h2>See Also</h2>
<p>
<a class="link" href="repluck.html" title="repluck"><em class="citetitle">repluck</em></a>
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp53971232"></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>
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<p>
</p>
<p>New in Csound version 3.47</p>
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