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<refentry id="guiro">
<indexterm id="IndexGuiro"><primary>guiro</primary></indexterm>
<refentryinfo><title>Signal Generators:Models and Emulations</title></refentryinfo>
<refmeta>
<refentrytitle>guiro</refentrytitle>
</refmeta>
<refnamediv>
<refname>guiro</refname>
<refpurpose>
Semi-physical model of a guiro sound.
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>
<emphasis>guiro</emphasis> is a semi-physical model of a guiro sound. It is one of the PhISEM percussion opcodes. PhISEM (Physically Informed Stochastic Event Modeling) is an algorithmic approach for simulating collisions of multiple independent sound producing objects.
</para>
</refsect1>
<refsect1>
<title>Syntax</title>
<synopsis>ares <command>guiro</command> kamp, idettack [, inum] [, idamp] [, imaxshake] [, ifreq] [, ifreq1]</synopsis>
</refsect1>
<refsect1>
<title>Initialization</title>
<para>
<emphasis>idettack</emphasis> -- period of time over which all sound is stopped
</para>
<para>
<emphasis>inum</emphasis> (optional) -- The number of beads, teeth, bells, timbrels, etc. If zero, the default value is 128.
</para>
<para>
<emphasis>idamp</emphasis> (optional) -- the damping factor of the instrument. <emphasis>Not used.</emphasis>
</para>
<para>
<emphasis>imaxshake</emphasis> (optional, default=0) -- amount of energy to add back into the system. The value should be in range 0 to 1.
</para>
<para>
<emphasis>ifreq</emphasis> (optional) -- the main resonant frequency. The default value is 2500.
</para>
<para>
<emphasis>ifreq1</emphasis> (optional) -- the first resonant frequency.
</para>
</refsect1>
<refsect1>
<title>Performance</title>
<para>
<emphasis>kamp</emphasis> -- Amplitude of output. Note: As these instruments are stochastic, this is only an approximation.
</para>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
Here is an example of the guiro opcode. It uses the file <ulink url="examples/guiro.csd"><citetitle>guiro.csd</citetitle></ulink>.
<example>
<title>Example of the guiro opcode.</title>
<para>See the sections <link linkend="UsingRealTime"><citetitle>Real-time Audio</citetitle></link> and <link linkend="CommandFlags"><citetitle>Command Line Flags</citetitle></link> for more information on using command line flags.</para>
<xi:include href="examples-xml/guiro.csd.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
</example>
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<link linkend="bamboo"><citetitle>bamboo</citetitle></link>,
<link linkend="dripwater"><citetitle>dripwater</citetitle></link>,
<link linkend="sleighbells"><citetitle>sleighbells</citetitle></link>,
<link linkend="tambourine"><citetitle>tambourine</citetitle></link>
</para>
</refsect1>
<refsect1>
<title>Credits</title>
<para>
<simplelist>
<member>Author: &nameperry;, part of the PhISEM (Physically Informed Stochastic Event Modeling)</member>
<member>Adapted by &namejohn;</member>
<member>University of Bath, Codemist Ltd.</member>
<member>Bath, UK</member>
</simplelist>
</para>
<para>New in Csound version 4.07</para>
<para>Added notes by &namerasmus; on May 2002.</para>
</refsect1>
</refentry>
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