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<refentry id="MixerClear">
<indexterm id="IndexMixerClear"><primary>MixerClear</primary></indexterm>
<refentryinfo><title>Mixer Opcodes</title></refentryinfo>
<refmeta>
<refentrytitle>MixerClear</refentrytitle>
</refmeta>
<refnamediv>
<refname>MixerClear</refname>
<refpurpose>
Resets all channels of a buss to 0.
</refpurpose>
</refnamediv>
<refsect1>
<title>Syntax</title>
<synopsis><command>MixerClear</command></synopsis>
</refsect1>
<refsect1>
<title>Description</title>
<para>Resets all channels of a buss to 0.
</para>
</refsect1>
<refsect1>
<title>Performance</title>
<para>
Use of the mixer requires that instruments setting gains have smaller numbers than instruments sending signals,
and that instruments sending signals have smaller numbers than instruments receiving those signals.
However, an instrument may have any number of sends or receives. After the final signal is received,
<link linkend="MixerClear"><citetitle>MixerClear</citetitle></link> must be invoked to reset the busses to 0 before the next kperiod.
</para>
</refsect1>
<refsect1>
<title>Examples</title>
<programlisting>
<emphasis role="oblock">instr</emphasis> 220 <emphasis role="comment">; Master output</emphasis>
<emphasis role="comment">; It applies a bass enhancement, compression and fadeout</emphasis>
<emphasis role="comment">; to the whole piece, outputs signals, and clears the mixer.</emphasis>
a1 <emphasis role="opc">MixerReceive</emphasis> 220, 0
a2 <emphasis role="opc">MixerReceive</emphasis> 220, 1
<emphasis role="comment">; Bass enhancement</emphasis>
al1 <emphasis role="opc">butterlp</emphasis> a1, 100
al2 <emphasis role="opc">butterlp</emphasis> a2, 100
a1 <emphasis role="op">=</emphasis> al1<emphasis role="op">*</emphasis>1.5 <emphasis role="op">+</emphasis> a1
a2 <emphasis role="op">=</emphasis> al2<emphasis role="op">*</emphasis>1.5 <emphasis role="op">+</emphasis> a2
<emphasis role="comment">; Global amplitude shape</emphasis>
kenv <emphasis role="opc">linseg</emphasis> 0., p5 <emphasis role="op">/</emphasis> 2.0, p4, p3 <emphasis role="op">-</emphasis> p5, p4, p5 <emphasis role="op">/</emphasis> 2.0, 0.
a1<emphasis role="op">=</emphasis>a1<emphasis role="op">*</emphasis>kenv
a2<emphasis role="op">=</emphasis>a2<emphasis role="op">*</emphasis>kenv
<emphasis role="comment">; Compression</emphasis>
a1 <emphasis role="opc">dam</emphasis> a1, 5000, 0.5, 1, 0.2, 0.1
a2 <emphasis role="opc">dam</emphasis> a2, 5000, 0.5, 1, 0.2, 0.1
<emphasis role="comment">; Remove DC bias</emphasis>
a1blocked <emphasis role="opc">dcblock</emphasis> a1
a2blocked <emphasis role="opc">dcblock</emphasis> a2
<emphasis role="comment">; Output signals</emphasis>
<emphasis role="opc">outs</emphasis> a1blocked, a2blocked
<emphasis role="opc">MixerClear</emphasis>
<emphasis role="oblock">endin</emphasis></programlisting>
<para>
Here is a complete example of the Mixerclear opcode. It uses the file <ulink url="examples/Mixer.csd"><citetitle>Mixer.csd</citetitle></ulink>
<example>
<title>Complete example of the Mixerclear opcode.</title>
<xi:include href="examples-xml/Mixer.csd.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
</example>
</para>
</refsect1>
<refsect1>
<title>Credits</title>
<para>Author: Michael Gogins (gogins at pipeline dot com).</para>
</refsect1>
</refentry>
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