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<TITLE>ORCHESTRA_HEADER_STATEMENTS</TITLE>
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<H2>
ORCHESTRA HEADER STATEMENTS</H2>
<PRE> <B>sr</B> = n1
<B>kr</B> = n2
<B>ksmps</B> = n3
<B>nchnls</B> = n4</PRE>
<HR>
<H4>
<U>DESCRIPTION</U></H4>
These statements are global value <I>assignments</I>, made at the beginning
of an orchestra, before any instrument block is defined. Their function
is to set certain <I>reserved symbol variables</I> that are required for
performance. Once set, these reserved symbols can be used in expressions
anywhere in the orchestra.
<P><B>sr</B> = (optional) - set sampling rate to <I>n1</I> samples per
second per channel. The default value is 10000.
<P><B>kr</B> = (optional) - set control rate to <I>n2</I> samples per second.
The default value is 1000.
<P><B>ksmps</B> = (optional) - set the number of samples in a Control Period
to <I>n3</I>. <B>This value must equal sr/kr</B>. The default value is
10.
<P>nchnls = (optional) - set number of channels of audio output to <I>n4</I>.
(1 = mono, 2 = stereo, 4 = quadraphonic.) The default value is 1 (mono).
<P>In addition, any <B><A HREF="./const.html">global variable</A></B>
can be initialized by an <I>init-time assignment</I> anywhere before the
first <B><A HREF="./instr.html">instr statement.</A></B>
<P>All of the above assignments are run as instrument 0 (i - pass only)
at the start of real performance.
<H4>
<U>EXAMPLE</U></H4>
<PRE> sr <B>=</B> 10000
kr = 500
ksmps = 20
gi1 <B>=</B> sr/2.
ga <B>init</B> 0
gitranspose <B>=</B> octpch(.0l)</PRE>
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